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2017

1. Md. A. Helal, Md. Aftabuzzaman, S. Tsukada, S. Kojima,~ Scientific Reports 7:44448 (2017).
“Role of polar nanoregions with weak random fields in Pb-based perovskite ferroelectrics”

2. Šarūnas Svirskas, Jūras Banys, and Seiji Kojima,
Journal of Applied Physics 121, 134101 (2017),
”Broadband dielectric spectroscopy of Pb-based relaxor ferroelectric (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 with intermediate random fields”

2016

1. V. Sivasubramanian, V. Subramanian, and S. Kojima
Phys. Rev. B 93, 054115-1-7 (2016)
Classical ferroelectriclike behavior of highly ordered Pb(Sc1/2Nb1/2)O3 studied by dielectric and Brillouin scattering spectroscopy

2. Md. Saidul Islam, Shinya Tsukada, and Seiji Kojima
J. Appl. Phys. 119, 094106-1-5 (2016)
“Anomalous thermal hysteresis of two first order phase transitions in relaxor ferroelectric 0.945 Pb(Zn1/3Nb2/3)O3-0.055PbTiO3 crystals studied by Brillouin scattering” 3. M. M. Rahaman, T. Imai, T. Sakamoto, S. Tsukada, and S. Kojima
Scientific Report, 6:23898-1-10 (2016).
“Fano resonance of Li-doped KTa1−xNbxO3 single crystals studied by Raman scattering”

4. Md Aftabuzzaman and S. Kojima,
Jpn. J. Appl. Phys. 55, 07KB03-1-6 (2016).
“Electric field effect of relaxor ferroelectric (1-x)Pb(Mg1/3Nb2/3)O3–xPbTiO3 crystals near morphotropic phase boundary composition probed by Brillouin scattering”

5. Md Al Helal, T. Mori, and S. Kojima
Ferroelectrics 499, 107–114 (2016).
“Terahertz time-domain spectroscopy and Raman scattering studies of incipient ferroelectric BaZrO3” 6. S. Kojima and T. Mori
Ferroelectrics 499, 100–106 (2016).
“Terahertz time-domain spectroscopy of Raman inactive phonon-polariton in strontium titanate”

7. Seiji Kojima, Kazuki Kanehara, Takuya Hoshina, and Takaaki Tsurumi,
Jpn. J. Appl. Phys. 55, 10TC02-1-5 (2016).
“Optical phonons and polariton dispersions of congruent LiNbO3 studied by far-infrared spectroscopic ellipsometry and Raman scattering”

8. Md Aftabuzzaman, J. Dec, W. Kleemann, and S. Kojima,
Jpn. J. Appl. Phys. 55, 10TC01-1-5 (2016).
“Field dependent elastic anomaly in uniaxial tungsten bronze relaxors”

9. S. Kojima and T. Mori,
Ferroelectrics 500, 183–202 (2016).
“Terahertz time-domain spectroscopy of infrared active soft mode and phonon-polariton dispersion”

10. M. Kabeya, T. Mori, Y. Fujii, A. Koreeda, B. W. Lee, J.-H. Ko, and S. Kojima,
Phys. Rev. B 94, 224204 (2016).
“Boson peak dynamics of glassy glucose studied by integrated terahertz-band spectroscopy”

2015

1. I. Jankowska-Sumara, M. Ptak, M. Maczka, A. Majchrowski, T.H. Kim, and S. Kojima,
Journal of Alloys and Compounds 644 (2015) 854–861,
“Temperature-dependent Raman scattering study of tin modified PbZrO3 and PbHfO3 single crystals” 2. D.-M. Shin, Y.-H. Hwang, J.-H. Ko, and S. Kojima,
Current Applied Physics 15 (2015) 958-963,
“Relaxation behaviors of enantiomorphic S-ibuprofen as revealed by dielectric and photon correlation spectroscopies”.

3. K. Matsumoto and S. Kojima,
Japanese Journal of Applied Physics 54, 10NC04-1-4, (2015).
“Effect of electric field on uniaxial relaxor ferroelectric strontium barium niobate”.

4. S. Koda, T. Shibata, I. –S. Park , and S. Kojima,
Current Applied Physics 15 (2015) 805-810.
“Relaxation dynamics and fragility during liquideglass transitions of poly(propylene glycol)s”.

5. M. Maczka, T. H. Kim, A. Gagor, I. Jankowska-Sumara, A. Majchrowski, and S. Kojima,
Journal of Alloys and Compounds 622 (2015) 935–941.
” Brillouin scattering, DSC, dielectric and X-ray diffraction studies of phase transitions in antiferroelectric PbHfO3:Sn”.

6. S. Koda, H. Takayama, T. Shibata, T. Mori, and S. Kojima,
J. Kor. Phys. Soc. 66, 1376∼1380 (2015).
“Small Angle Neutron Scattering Study on the Structural Variation of Lysozyme in Bioprotectants”.

7. S. Kojima, T. Mori, T. Shibata, and Y. Kobayashi,
Pharm Anal Acta 6, (2015) 1000401-1-6.
"Broadband Terahertz Time-Domain and Low-Frequency Raman Spectroscopy of Crystalline and Glassy Pharmaceuticals”.

8. Y. Kobayashi, T. Shibata, T. Mori, and S. Kojima,
International Letters of Chemistry, Physics and Astronomy 7 (2015) 16-22.
“Terahertz Time-Domain Spectroscopy and Low-Frequency Raman Scattering of Crystalline and Glassy Pharmaceutical Indapamide”.

9. T. Shibata, T. Mori, and S. Kojima,
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy 150 (2015) 207–211.
“Low-frequency vibrational properties of crystalline and glassy indomethacin probed by terahertz time-domain spectroscopy and low-frequency Raman scattering”.

10. Md. M. Rahaman, T. Imai, J. Kobayashi, and S. Kojima
Jpn. J. Appl. Phys. 54, 10NB01-1-5 (2015).
“Effect of Li-doping on polar-nanoregions in K(Ta1-xNbx)O3 single crystals”

11. Y. Christy, K. Matsumoto, and S. Kojima,
Jpn. J. Appl. Phys. 54, 07HB02-1-4 (2015).
“Elastic anomaly and aging of new type of incommensurate phase transition in ferroelectric barium sodium niobate”.

12. M. A. Helal, T. Mori, and S. Kojima,
Appl. Phys. Lett. 106, 182904-1-4 (2015).
“Softening of infrared-active mode of perovskite BaZrO3 proved by terahertz timedomain spectroscopy”.

13. T. Mori, H. Igawa, D. Okada, Y. Yamamoto, K. Iwamoto, N. Toyota, and S. Kojima,
J. Mol. Struc. 1090 (2015) 93–97.~ “Broadband terahertz time-domain spectroscopic study on form II polyvinylidene fluoride”.

14. S. Koda, T. Mori, and S. Kojima,
International Letters of Chemistry, Physics and Astronomy, 62, pp 15-20 (2015)~ “Broadband Terahertz Time-Domain Spectroscopy and Low-Frequency Raman Scattering of Propylene Glycol”

15. D. Shimizu, S. Tsukada, M. Matsuura, J. Sakamoto, S. Kojima, K. Namikawa, J. Mizuki, and K. Ohwada,~ Phys Rev. B 92, 174121-1-5 (2015).
“Negative correlation between electrical response and domain size in Ti-composition-gradient Pb[(Mg1/3Nb2/3)1−xTix]O3 crystal near morphotropic phase boundary”.

16. S. Kojima and T. Mori,~ Ferroelectrics, 485, pp.13–19, (2015).~ “Broadband Terahertz Time-Domain Spectroscopy of Complex Phonon-Polariton Dispersion Relation”

17. T. Sasaki, Y. Hashimoto, T. Mori, and S. Kojima
International Letters of Chemistry, Physics and Astronomy, 62, pp 29-33 (2015).~ “Broadband Terahertz Time-Domain Spectroscopy of Archaeological Baltic Amber”

18. A. I. Fedoseev, E. A. Popova, P. P. Syrnikov, S. Kojima, and S. G. Lushnikov,
JETP Letters, 2015, Vol. 102, No. 12, pp. 789–795
“Multicomponent Quasi-Elastic Light Scattering in Na1/2Bi1/2TiO3 as Studied by Broadband Brillouin Scattering”

2014

Original papers

1. M. Maczka,; T.H. Kim,; M. Ptak; I. Jankowska-Sumara; A. Majchrowski,; S. Kojima~ J. Alloys Comp. 587（2014）273-277
“High-resolution Brillouin scattering studies of phase transitions and precursor phenomena in PbZr0.78Sn0.22O3 single crystals”
2. T. Shibata, H. Takayama, T. H. Kim, and S. Kojima
Chem. Phys. Lett. 592, 80-84 (2014).
"Acoustic and thermal anomalies in a liquid-glass transition of racemic S(+)-R(-) ketoprofen”
3. T.Shibata, H. Igawa, T.H. Kim, T. Mori, and S. Kojima
J. Mol. Struct. 1062,185-188 (2014).
"Glass transition dynamics of anti-inflammatory ketoprofen studied by Raman scattering and terahertz time-domain spectroscopy"
4. G. Shabbir and S. Kojima
Euro. Phys. Lett. 105 (2014) 57001-1-4.
“Anomalous variations in elastic properties of lead zirconate niobate-lead titanate single crystals in the vicinity of its ferroelectric phase transition”
5. M. Kodama and S. Kojima
Phys. Chem. Glasses: Eur. J. Glass Sci. Technol. B, 55 (2014) 1–12.
“Velocity of sound in and elastic properties of alkali metal borate glasses”
6. H. Igawa, M. Mori, and S. Kojima
Jpn. J. Appl. Phys. 53 (2014) 05FE01.
“Terahertz time-domain spectroscopy of congruent LiNbO3 and LiTaO3 crystals”
7. H. Takayama, T. Shibata, Y. Kuroda, S. Koda, and S. Kojima
Jpn. J. Appl. Phys. 53 (2014) 07KB06.
“Gigahertz elastic properties of cryoprotective aqueous solutions of inonic liquids and trehalose”
8. T. Imai, S. Toyoda, J. Miyazu, J. Kobayashi, and S. Kojima
Applied Physics Express 7, 071501-1-4 (2014).
“Changes in permittivity of KTa1-xNbxO3 crystals induced by electron injection in relation to nonlinear dielectric response”
9. A. Muhtar, S. Kojima, N. Yasuda, and J. Russell
Ferroelectrics, 467, 138-145 (2014).
“Successive Pressure-Induced Structural Transitions in Relaxor Lead Indium Niobate”
10. S. Aramomi, Y. Matsuda, and S. Kojima
J. Non-Crys. Solid. 401, 142-146 (2014).
“High temperature Brillouin scattering study on elastic properties of lithium cesium borate glasses, crystals and melts”
11. M. K. Singh, G. Singh, T. H. Kim, S. Kojima, R. S. Katiyar, and J. F. Scott
EPL, 107 , 26004 (2014).
”High-temperature phase transitions in SrHfO3: A Raman scattering study”
12. M. Mczka, M. Ptak, and S. Kojima
Appl. Phys. Lett. 104, 222903 (2014)
“Brillouin scattering study of ferroelectric transition mechanism in multiferroic metalorganic frameworks of [NH4][Mn(HCOO)3] and [NH4][Zn(HCOO)3]”
13. K. Suzuki, K. Matsumoto, J. Dec, T. Łukasiewicz, W. Kleemann, and S. Kojima
Phys. Rev. B 90, 064110 (2014).
”Critical slowing down and elastic anomaly of uniaxial ferroelectric Ca0.28Ba0.72Nb2O6 crystals with tungsten bronze structure”
14. S. Kojima and T. Mori,
IOP Conf. Ser.: Mater. Sci. Eng. 54, 012001-1-6 (2014).
“Broadband terahertz time-domain spectroscopy : crystalline and glassy drug materials”.

2013

Original papers

1. T. Shibata, A. Tominaga, H. Takayama, and S. Kojima
AIP Conf. Proc. 1518, 312-315 (2013).
“Dynamical properties in supercooling liquid of trehalose aqueous solution studied by Brillouin scattering”
2. H. Takayama, T. Shibata, T. Ishii, and S. Kojima
J. Kor. Phys. Soc. 62, 987-990 (2013).
“Brillouin-scattering Study of Liquid-glass Transitions in Ternary Mixtures of Water, Trehalose, and an Ionic Liquid”
3. S. Tsukada, T. H. Kim, and S. Kojima
APL Mater. 1, 032114-1-7 (2013).
“Large acoustic thermal hysteresis in relaxor ferroelectric Pb(Zn1/3Nb2/3)O3-PbTiO3”
4. S. Tsukada, Y. Hidaka, S. Kojima, A. A. Bokov, and Z.-G. Ye
Phys. Rev. B 87, 014101-1-8 (2013).
“Development of nanoscale polarization fluctuations in relaxor-based (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 ferroelectrics studied by Brillouin scattering”
5. M. Mączka, A. Majchrowski, J. Hanuza, and S. Kojima
J. Phys.: Condens. Matter 25, 025901-1-8 (2013).
“Temperature-dependent IR and Raman scattering studies of phase transitions in K2MgWO2(PO4)2”
6. J. Zushi, T. Ariizumi, S. Kojima, Ruiping Wang, and H. Bando
Jpn. J. Appl. Phys. 52, 07HB02-1-5 (2013).
“Formation of Morphotropic Phase Boundary in (Na0.5K0.5)NbO3–BaZrO3–(Bi0.5Li0.5)TiO3, Lead-Free Piezoelectric Ceramics”
7. T. H. Kim, J.-H. Ko, H. Takayama, T. Shibata, and S. Kojima
AIP Conf. Proc. 1518, 316-319 (2013).
“Glass transition dynamics of enantiomer (+)-ibuprofen”
8. K. Iwamoto, T. Mori, S. Kajitani, H. Matsumoto, N. Toyota, K. Suekuni, M. A. Avila, Y. Saiga, and T. Takabatake
Phys. Rev. B 88, 104308-1-9 (2013).
“Optical conductivity spectra of rattling phonons and charge carriers in the type-VIII clathrate Ba8Ga16Sn30”
9. K. Iwamoto, S. Kushibiki, H. Honda, S.Kajitani, T. Mori, H. Matsumoto, N. Toyota, K. Suekuni, M. A. Avila, and T. Takabatake
J. Phys. Soc. Jpn. 82, 024601-1-7 (2013).
“Anomalous Infrared Spectra of Hybridized Phonons in Type-I Clathrate Ba8Ga16Ge30”

2012

Review papers

1. S. Kojima, M. Ahart, V. Sivasubramanian, A. A. Bokov, Z.-G. Ye
J. Adv. Dielect., 2 (2012) 1241004.
“Precursor Dynamics of Pb(B1/2B’1/2)O3-type Relaxor Ferroelectrics Studied by Broadband Micro-Brillouin Scattering”

Original papers

1. E. Dul’kin, S. Kojima, and M. Roth
J. Appl. Phys. 111, 084101 (2012).
“Low temperature anomalous field effect in SrxBa1-xNb2O6 uniaxial relaxor ferroelectric seen via acoustic emission”
2. K. Kaneda, K. Arae, M. Kodama, and S. Kojima
J. Non-Crys. Solids, 358, 799 (2012).
“Aging, glass transition, supercooled and equilibrium liquid states of alkali germanate glasses studied by Brillouin scattering”
3. M. Mączka, A. V. Knyazev, A. Majchrowski, J. Hanuza, and S. Kojima
J. Phys.: Condens. Matter 24, 195902 (2012).
“Temperature-dependent Raman scattering study of the defect pyrochlores RbNbWO6 and CsTaWO6”
4. J.-H. Ko, T. H. Kim, S. Kojima, K. Roleder, D. Rytz, C. J. Won, N. J. Hur, J. H. Jung, T.-Y. Koo, S. B. Kim, and K. Park
Current Applied Physics, 12 (2012) 1185-1189.
“Logarithmic temperature variations of the elastic constant of barium titanate near the ferroelectric phase transition”
5. T. H. Kim, J.-H. Ko, S. Kojima, A. A. Bokov, X. Long, and Z.-G. Ye
Appl. Phys. Lett., 111, 082903 (2012).
“Phase transition behaviors of PbZr1−xTixO3 single crystals as revealed by elastic anomalies and central peaks”
6. T. H. Kim, S. Kojima, and J.-H. Ko
J. Appl. Phys., 111, 054103 (2012).
“Phase transition behaviors in relaxor ferroelectric [001]-poled Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 single crystals studied by Brillouin light scattering and dielectric spectroscopies”
7. M. S. Islam, J. Kano, Q. R. Yin, and S. Kojima
J. Electroceram., 28 (2012) 89-94.
“Doping effects on dynamical physical properties of Ca0.6Sr0.4Bi4Ti4O15 ferroelectric ceramics with layered-perovskite structure”
8. J.-H. Ko, T. H. Kim, S. Kojima, K. Roleder, and D. Rytz
Phase Transitions, 85 (2012) 718-726.
“Precursor dynamics in rhodium-doped barium titanate single crystals studied by Brillouin light scattering and birefringence measurements”
9. V. Sivasubramanian and S. Kojima
Phys. Rev. B, 85, 054104 (2012).
“Brillouin scattering studies of acoustic phonon modes and central peak in single-crystal Pb(Sc1/2Ta1/2)O3”
10. A. M. Pugachev, V. I. Kovalevskii, N. V. Surovtsev, S. Kojima, S. A. Prosandeev, I. P. Raevski, and S. I. Raevskaya
Phys. Rev. Lett., 108, 247601 (2012).
“Broken Local Symmetry in Paraelectric BaTiO3 Proved by Second Harmonic Generation”
11. K. Iwamoto, T. Mori, S. Kushibiki, H. Honda, H. Matsumoto, K. Suekuni, M. A. Avila, T. Takabatake, and N. Toyota
Key Eng. Mater. 508, 341-1-6 (2012).
“Optical Conductivity of Rattling Phonons in Type-I Clathrates Ba8Ga16Ge30 and Ba8Ga16Sn30”

2011

Review papers

1. A. A. Bokov, B. J. Rodriguez, X. Zhao, J.-H. Ko, S. Jesse, X. Long, W. Qu, T. H. Kim, J. D. Budai, A. N. Morozovska, S. Kojima, X. Tan, S.V. Kalinin, and Z.-G. Ye
Z. Kristallogr. 226 (2011) 99-107 .
“Compositional disorder, polar nanoregions and dipole dynamics in Pb(Mg1/3Nb2/3)O3-based relaxor ferroelectrics”
2. S. Kojima and J.-H. Ko,
Curr. Appl. Phys. 11 (2011)S22-S32. ~ “Broadband micro-Brillouin scattering spectroscopy of Pb(B1/3B02/3)O3-based relaxor ferroelectrics”~

Original papers

1. R. Ohta, J. Zushi, T. Ariizumi, and S. Kojima,
Appl. Phys. Lett. 98 (2011) 092909.
Virtual Journal of Nanoscale Science & Technology, the March 21, 2011 issue, ~“Order–disorder behavior of ferroelectric phase transition of KTa1−xNbxO3 probed by Brillouin scattering”
2. S. Kojima, S. Tsukada, Y. Hidaka, A.A. Bokov, and Z.-G. Ye,
J. Appl. Phys.109 (2011) 084114
“Broadband Gigahertz Dynamics of Relaxor Ferroelectric Pb(Sc1/2Nb1/2)O3-xPbTiO3 Single Crystal Probed by Brillouin Scattering”
3.E. Dul'kin, S. Kojima, and M. Roth ~ J. Appl. Phys. 110 (2011) 044106,
“Precursor Behavior and Field Effect in Uniaxial Sr0.75Ba0.25 Nb2O6 Relaxor　Detected by Acoustic Emission”
4. M. Maczka, L. Makalik, and S. Kojima
J. Phys. Cond. Matt. 23 (2011) 405902.
“Temperature-dependent Raman scattering study of cation-deficient Aurivillious phases : BiWO6 and Bi2W2O9”
5. J.-H.Ko, T.H. Kim, K. Roleder, D. Rytz, and S. Kojima
Phys. Rev. B 84, 094123 (2011)(1-10). ~ “Precursor dynamics in the ferroelectric phase transition of barium titanate single crystals studied by Brillouin scattering”
6. Jae-Hyeon Ko, Tae Hyun Kim, Kwang-Sei Lee, Seiji Kojima,
Chem. Phys. Lett. 515 (2011) 221-225.
“Brillouin scattering study on crystalline and glassy states of anti-inflammatory racemic S(+)–R(_) ibuprofen”
7. Jae-Hyeon Ko, Tae Hyun Kim, Seiji Kojima, Ki-Soo Lim, and Tae-Yeong Koo
Appl. Phys. Lett. 99 (2011) 212902.
“Effects of Sr content and bias field on acoustic properties of strontium barium niobate studied by Brillouin light scattering”
8. M. Kawashima, Y. Matsuda, and S. Kojima
J. Mol. Struc.993 (2011) 155.
“Temperature dependence of elastic properties in alkali borate binary glasses"
9.K. Kaneda, K. Arae, M. Kodama, and S. Kojima,
Journal of Non-Crystalline Solids (to be published)
“Aging, glass transition, supercooled and equilibrium liquid states of alkali germanate glasses studied by Brillouin scattering”

2010

Review papers

1. S. Kojima
Jpn. J. Appl. Phys. 49 (2010) 07HA01
“Gigahertz Acoustic Spectroscopy by Micro-Brillouin Scattering”

Original papers

1. J. –H. Ko, D. H. Kim, S. Tsukada, S. Kojima, A. A. Bokov, and Z. -G. Ye ~ Phys. Rev. B 82 (2010),104110 ~ Crossover in the mechanism of ferroelectric phase trnaisition of Pb[(Mg1/3Nb2/3)1-xTix]O3 single crystals studied by Brillouin scattering

2. T. Kim, S. Kojima, K. Park, S. Kim and J. –H. Ko ~ J. Phys. Cond. Matt. 22 (2010) 225904
Precursor polar clusters in the　paraelectric phase of ferroelectric Ba0.8Ca0.2TiO3 single crystals studied by Brillouin light scattering

3. M. Ahart, H. Mao, R. E. Cohen, and R. J. Hemley, G. A. Samara, Z.-G. Ye, and S. Kojima
J. Appl. Phys. 107 (2010) 074110
Pressure effects on relaxor ferroelectricity of Pb(Sc1/2Nb1/2)O3

4. J.-H. Ko, T. H. Kim, S.Kojima, A. A. Bokov and Z.-G. Ye
J. Appl. Phys. 107 (2010) 045108
The effect of chemically ordered regions on the acoustic behaviors in Pb(Mg1/3Nb2/3)O3 studied by Brillouin scattering

5. Y. Matsuda, M. Kawashima, Y. Moriya, T. Yamada, O. Yamamuro, and S. Kojima
J. Phys. Soc. Jpn. 79 (2010) 033801
Composition Dependence of the Boson Peak and Universality in Lithium Borate Binary Glasses: Inelastic Neutron and Raman Scattering Studies

6. F. Shikanai, S. Tsukada, J. Kano, and S. Kojima
Phys. Rev. B 81 (2010) 012301
Acoustic phonons and a central mode in the protonic conductor K3H(SeO4)2

2009

Original papers

6
A. V. Svanidze1, H. Huth, S. G. Lushnikov, S. Kojima, and C. Schick
Appl. Phys. Lett. 95, 263072 (2009)
Phase transition in tetragonal hen-egg white lysozyme crystals: the evidence from Brillouin light scattering and differential AC-nanocalorimetry

5
M. S. Jang, M.K. Ryu, M. H. Yoon, S.H.Lee, H.K.Kim, A.Onodera, and S. Kojima~ Curr. Appl. Phys. 9, 651 (2009)
A study of the Raman spectra of Al-doped and Ga-doped ZnO ceramics

4
G. Shabbir and S. Kojima
J. Appl. Phys. 105, 034106 (2009)
Acoustic phonon mode anomalies in lanthanum doped lead zirconate-titanate relaxor ferroelectric ceramics

3
V. Sivasubramanian, S. Tsukada, and S. Kojima
J. Appl. Phys. 105, 014108 (2009)
Anomalous behavior of acoustic phonon and central peak in Pb[In1/2Nb1/2)0.65Ti0.35]O3 single crystal

2
S. Tsukada, Y. Hiraki, Y. Akishige, and S. Kojima
Phys. Rev. B 80, 012102 (2009)
Enhanced polarization fluctuation in KF-substituted BaTiO3 single crystals

1
M. Ahart, A. Hushur, Y. Bing, Z. Ye, R. J. Hemley, and S. Kojima
Appl. Phys. Lett. 94, 142906 (2009)
Critical slowing down of relaxation dynamics near the Curie temperature in the relaxor Pb(Sc0.5Nb0.5)O3

2008

Original papers

11
Jae-Hyeon Ko, Kwang-Sei Lee b, Yuji Ike, Seiji Kojima
Chem. Phys. Lett. 465, 36 (2008)
Elastic properties of aspirin in its crystalline and glassy phases studiedby micro-Brillouin scattering

10
J.-H. Ko, D. H. Kim and S. Kojima
Phys. Rev. B 77, 104110 (2008)
Central peaks, acoustic modes and the dynamics of polar nanoregions in Pb(Zn1/3Nb2/3)xTi1-x]O3 single crystals studied by Brillouin spectroscopy

9
M. Maczka, J. Hanuza and S. Kojima
Phys. Rev. B 77, 104116 (2008)
High-resolution temperature dependent Brillouin scattering studies of ferroelectric K3Nb3O6(BO3)2

8
S. G. Lushnikov, A. I. Fedoseev, S. N. Gvasaliya
Phys. Rev. B 77, 104122 (2008)
Anomalous dispersion of the elastic constants at the phase transformation of the Pb(Mg1/3Nb2/3)O3 relaxor ferroelectrics

7
G.-M. Rotaru, S. N. Gvasaliya, B. Roessli, S. Kojima, SD. G. Lushnikov, and P. Gunter
Appl. Phys. Lett. 93, 032903 (2008)
Evolusiton of the neutron quasiellastic scattering through the ferroelectric phase transition in 93%PbZn1/3Nb2/3O3-7%PbTiO3

6
Y. Matsuda, Y. Fukawa, Y. Ike, M. Kodama and S. Kojima
J. Phys. Soc. Jpn. 77, 084602 (2008)
Dynamic Specific Heat, Glass Transition, and Non-Debye Nature of Thernal Relaxation in Lithium Borate Glasses

5
J.-H. Ko, S. Kojima, T.-Y. Koo, J. H. Jung, C. J. Won, and N. J. Hur
Appl. Phys. Lett. 93,102905 (2008)
Elastic softening and central peaks in BaTiO3 single crystals above the cubic-tetragonal phase-transition temperature

4
S. Tsukada and S. Kojima
Phys. Rev. B 78, 144106 (2008)
Broadband light scattering of two relaxation processes in relaxor ferroelectric 0.93Pb(Zn1/3Nb2/3)O3-0.07PbTiO3 single crystals

3
S. Tsukada, Y. Ike, R. Wang and S. Kojima
J. Phys. Soc. Jpn. 77, 033707 (2007)
Dynamical Properties of Polar Nanoregions of Relaxor Ferroelectric 0.71Pb(Ni1/3Nb2/3)O3-0.29PbTiO3

2
J. -H. Ko, D. H. Kim and S. Kojima
Phys. Rev. B77, 104110 (2008)
Central peaks and the dynamics of polar nano regions in Pb(Zn1/3Nb2/3)1-xTixO3 single crystals studied by Brillouin spectroscopy

1
S.G. Lushnikov, A.I. Fedoseev, S.N. Gvasaliya and S. Kojima
Phys. Rev. B 77,104122 (2008)
Anomalous dispersion of the elastic constants at the phase transformation of the PbMg1/3Nb2/3O3 relaxor ferroelectric

2007

Original papers

9
J.-H. Ko, S. Kojima A. A. Bokov and Z. G. Ye
Appl. Phys. Lett. 91 (2007) 252909
Light scattering study of acoustic phonon modes and central peaks in Pb(Mg1/3Nb2/3)0.45Ti0.55O3 single crystals

8
J.-H. Ko and S. Kojima
Appl. Phys. Lett. 91 (2007) 082903
Intrinsic and extrinsic central peaks in the Brillouin light scattering spectrum of the uniaxial ferroelectric relaxor Sr0.61Ba0.39Nb2O6

7
G. Shabbir and S. Kojima
Appl. Phys. Lett. 91 (2007) 062911
Central peak and acoustic anomalies of the relaxor ferroelectric lead manganese niobate-lead titanate single crystal studied by the micro-Brillouin scattering

6
A. Hushur, S.N. Gvasaliya, B. Roessli, S.G. Lushnikov and S. Kojima
Phys. Rev. B 76 (2007) 064104
Ferroelectric phase transition of stoichiometric lithium tantalate studied by Raman, Brillouin, and neutron scattering

5
Y. Ike, S. Tsukada and S. Kojima
Rev Sci. Inst. 78 (2007) 076104
High-resolution Brillouin spectroscopy with angular dispersion-type Fabry Perot interferometer and its application to a quartz crystal

4
M. Maczka, J. Hanuza, A. Majchrowski and S. Kojima
Phys. Rev. B 75 (2007) 214105-1-9
Heat capacity and high-resolution Brillouin scattering studies of phase transitions in K2MgWO2(PO4)2: Observation of the coupled soft optic and acoustic mode

3
M. Maczka, J. Hanuza and M. Majchurouski and S. Kojima
Appl. Phys. Lett. 90 (2007) 112904
Diredct evidence of an order-disorder nature of ferroelectric phase transitiosn of K2MgWO2(PO4)2

2
Jae-Hyeon Ko, Do Han Kim, and Seiji Kojima
Appl. Phys. Lett. 90 (2007) 112904
Correlation between the dynamics of polar nanoregions and temperature evolution of central peaks in Pb[(Zn1/3Nb2/3)0.91Ti0.09]O3 ferroelectric relaxors

1
S. N. Gvasaliya, B. Roessli, R. A. Cowley, S. Kojima and S. G. Lushnikov
J. Phys.: Condens. Matter 19 (2007) 016219
Neutron scattering studies of the mechanism of ferroelectricity in 68PbMg1/3Nb2/3O3/PbTiO3

Proceedings, Special issues

11
Jun Kano, Shinya Tsukada, Fan Zhang, Tomoaki Karaki, Masatoshi Adachi, and Seiji Kojima
Jpn. J. Appl. Phys. 46 (2007) 7148
Characterization of Dielectric Property of Nanosized (Pb0.7Sr0.3)TiO3 Powders Studied by Raman Scattering

10
Shinya Tsukada, Yuji Ike, Jun Kano, Tadashi Sekiya, Yoshiro Shimojo, Ruiping Wang, and Seiji Kojima
Jpn. J. Appl. Phys. 46 (2007) 7151
Broadband Inelastic Light Scattering Study on Relaxor Ferroelectrics~

9
Y. Matsuda, Y. Fukawa, C. Matsui, Y. Ike, M. Kodama and S. Kojima
Fluid Phase Equili. 256 (2007) 127-131
Calorimetric study of the glass transition dynamics in lithium borate glasses over a wide composition range by modulated DSC”

8
Y. Ike, Y. Seshimo and S. Kojima
Fluid Phase Equili. 256 (2007) 123-126
Complex heat capacity of non-Debye process in glassy glucose and fructose

7
J. Kano, K. Sasanuma, S. Tsukada, S. Kojima, R. wang, K. Hanada, K. Matsusaki and H. Bando
Ferroelectrics 347 (2007) 55-59
Piezoelectric (Na0.5K0.5) NbO3-SrTiO3 ceramics in the tetragonal-orthorhombic phase boundary studied by Raman spectroscopy

6
J.-H. Ko and S. Kojima
Ferroelectrics 347 (2007) 25-29
Low-frequency central peaks in relaxor ferroelectric PZN-9%PT single crystals

5
G. Shabbir, A. H. Qureshi, S. Kojima and D. A. Hall
Ferroelectrics 346 (2007) 72-76
Synthesis and dielectric investigations of (1-x) Bi(Mg1/2Zr1/2)3-xPbTiO3 high temperature piezoelectric ceramics

4
H. Shigematsu, Y. Akishige, S. Gvasaliya, V. Pomjakushin, S. Lushnikov and S. Kojima
Ferroelectrics 346 (2007) 43-48
Neutron powder diffraction study of the phase transition in BaTi2O5

3
S. Tsukada, Y. Ike, J. Kano, T. Sekiya, Y. Shimojo, R. Wang and S. Kojima
Ferroelectrics 346 (2007) 37-42
Diffuse phase transition of 0.8Pb(Ni1/3Nb2/3)O3-0.2PbTiO3 single crystals studied by micro-Brillouin scattering

2
K. Sasanuma, S. Tsukada, J. Kano, S. Kojima, R. wang, K. Hanada, K. Matsusaki and H. Bando
Ferroelectrics 348 (2007) 508-514
Investigation on dielectric and piezoelectric properties of (1-x) (Na0.5K0.5)NbO3-xSrTiO3 ceramics

1
A. V. Svanidza, I. L. Sashin, S. G. Lushnikov, S. N. Gvasaliya, K. K. Turoverov, I. M. Kuznetsova and S. Kojima
Ferroelectrics 348 (2007) 154-160
Inelastic Incoherent Nwutron Scattering in Some Proteins

2006

Original papers

5
J.-H. Ko, D. H. Kim, S. Kojima, W. Chen and Z. G. Ye
J. Appl. Phys.100 (2006) 066106-1-3
Dynamical properties of ferroelectric relaxor Pb(Zn1/3Nb2/3)0.91Ti0.045O3 single crystals studied by Brillouin scattering and dielectric spectroscopy

4
G. Shabbir, S. Kojima and C. Feng
J. Appl. Phys. 100 (2006) 064107-1-4
High temperature dc field poling effects on the structural phase transformations of (1−x)Pb„Mg1/3Nb2/3O3–xPbTiO3 single crystal with morphotropic phase boundary composition

3
Shinya Tsukada, Yuji Ike, and Jun Kano, Tadashi Sekiya, Yoshihito Shimojo, Ruiping Wang and Seiji Kojima
Appl. Phys. Lett. 89 (2006) 212903-1-3
Broadband inelastic light scattering of a relaxor ferroelectric 0.71Pb

2
A. I. Fedoseev, S. G. Lushnikov, S. N. Gvasaliya, and S. Kojima
JETP 48 (2006) pp.1102-1105
Acoustic Properties of the Disordered Relaxor Ferroelectric PbSc1/2Ta1/2O3

1
A. V. Svaniza, S. G. Lushnikov and S. Kojima
JETP Lett. 84 (2006) pp.551-555
Anomalous temperature behavior of hypersonic acoustic phonons in a lisozyme crystal

Proceedings, Special issues

15
Y. Matsuda, C. Matsui, Y. Ike, M. Kodama and S. Kojima
AIP Conf. Proc. 832, (2006) pp155-158
Complex Heat Capacity of Lithium Borate Glasses Studied by Modulated DSC

14
M. Sato, Y. Ike , J. Kano and S. Kojima
AIP Conf. Proc. 832, (2006) pp291-294
Dynamics of Water-Ethanol Mixtures Studied by Light Scattering

13
Y. Ike、Y. Matsuda, S. Kojima and M. Kodama
Jpn. J. Appl. Phys. 45, 4474-4478 (2006)
Brillouin Scattering of Liquid Glass Transition in Lithium Borate Glass

12
Y. Matsuda, C. Matsui, Y. Ike, M. Kodama and S. Kojima
J. Thermal Analysis & Calorimetry, 85 (2006) pp.725–730
Non-Debye Nature in Thermal Relaxation and Thermal Properties of Lithium Borate Glasses Studied by Modulated DSC

11
A.I. Fedoseev, A.V. Svanidze, Seiji Kojima and S.G. Lushnikov
Materials Science and Engineering: A 442（2006）pp.224-228
Acousto-ionic interaction in sound velocity behavior at a superionic phase transition in Me3H(AO4)2-type crystals

10
S. Tsukada, Y. Ike, J. Kano and S. Kojima
Materials Science and Engineering: A 442（2006）pp.79-82
Brillouin scattering study of glass-forming propylene glycol

9
Yuji Ike and Seiji Kojima
Materials Science and Engineering: A 442（2006）pp.383-386
Brillouin scattering study of polymer dynamics

8
Anwar Hushur and Seiji Kojima
Materials Science and Engineering: A 442（2006）pp.35-38~ Brillouin scattering study on ferroelectric single crystal Sr2Ta2O7

7
A. I. Fedoseev , S. G. Lushnikov,, J. -H. Ko, S. Kojima, L. A. Shuvalov
Mechanical Spectroscopy III Solid State Phenomena, 115 (2006) pp.279-284
Specific features of Brillouin spectra at a high-temperature phase transition in Cs5H3(SO4)4xnH2O crystals

6
A. M. Pugachev, S. Kojima, H. Anwar
Phys. Solid State 48, (2006) pp.1050-1052~ “Investigation of the phase transition in lithium tantalate by Brillouin spectroscopy

5
A. I. Fedoseev, S. G. Lushnikov, S. N. Gvasaliya, S. Kojima
Phys. Solid State 48, (2006) pp. 1102-1105
Acoustic properties of the disordered relaxor ferroelectric PbSc1/2Ta1/2O3

4
Y. Ike, Y. Matsuda, C. Matsui, M. Kodama and S. Kojima
Phys. Chem. Glasses – Euro J. Glass Sci and Tech., B47 (2006) pp.335-338
Elastic and thermal properties of lithium borate glass system

3
M. Kodama, A. Ono, S. Kojima, S. A. Feller and M. Affatigato
Phys. Chem. Glasses – Euro J. Glass Sci and Tech., B47 (2006) pp.465-470
Borate anomaly and anharmonicity in sodium borate glasses

2
D. H. Kim, J.-H. Ko and S. Kojima
J. Electroceramics 17 (2006) 515-518
Field induced successive phase transitions of Pb(Zn1/3Nb2/3)O3-xmol%PbTiO3

1
J.-H. Ko, D. H. Kim and S. Kojima
J. K. Phys, Soc. 49 (2006) S5346-S539
Central peak behaviors of lanthanum lead zirconate ferroelectric relaxer ceramics

2005

Original papers

5
G. Shabbir, J.-H. Ko and S. Kojima
Appl. Phys. Lett. 86 (2005) 012908
Observation of low-temperature acoustic anomaly in lanthanum lead zirconate titanate

4
N. V. Surovtsev, A. M. Pugachev, V. K. Malinovsky, A. P. Shebanin, and S. Kojima
Phys. Rev. B 72, 104303 (2005)
Low-frequency Raman spectra in LiNbO3: Within and beyond the standard paradigm of ferroelectric dynamics

3
D. H. Kim, J.-H. Ko, C. D. Feng, and S. Kojima
J. Appl. Phys. 98, 044106 (2005)
Micro-Brillouin scattering study of ferroelectric relaxor Pb(Zn1/3Nb2/3)0.91Ti0.09O3 single crystals under the electric field along the [001] direction

2
D. H. Kim, J.-H. Ko, C. D. Feng, and S. Kojima
Appl. Phys. Lett. 87, 072908 (2005)
Microheterogeneity and field-cooling effects on Pb(Zn1/3Nb2/3)0.91Ti0.045O3 single crystals probed by micro-Brillouin scattering

1
A. Hushur, H, Shigematsu, Y. Akishige, and S. Kojima
Appl. Phys. Lett. 86, 112903 (2005)
Order-disorder nature of ferroelectric BaTi2O5

Proceedings, Special issues

17
Y. Ike and S. Kojima
J. Kor. Phys. Soc. 46 (2005) pp.90-92
Brillouin scattering measurement of stoichiometric lithium niobate crystals by using an angular dispersion-type Fabry-Perot interferometer

16
Z. Ni, A. Hushur, G. Shabbir and S. Kojima
J. Kor. Phys. Soc. 46 (2005) pp.134-137
Dielectric and Vibrational Properties of La3+ Substituted Relaxor (Na1/2Bi1/2)TiO3 Ceramics

15
D. H. Kim, J.-H. Ko and S. Kojima
J. Kor. Phys. Soc. 46 (2005) pp.131-133
A Study of Brillouin Scattering on Relaxor Based FerroelectricPb[(Zn1/3Nb2/3)0:91Ti0:09]O3 Crystal

14
A. Hushur, S. Kojima, T. Shigematsu and Y. Akishige
J. Kor. Phys. Soc. 46 (2005) pp.86-89
Raman Scattering Study on New Ferroelectric BaTi2O5 Single Crystals

13
M. Kodama, S. Kojima, S. Feller and M. Afftigato
Phys. Chem. Glasses, 46 (2005) pp.190-193
Borate anomaly, anharmonicity and fragility in lithium borate glass

12
G. Shabbir and S. Kojima
J. Kor. Phys. Soc. 46 (2005) pp.128-130
Low-Temperature Elastic Properties of Lanthanum Lead Zirconate Titanate Relaxor Ferroelectric Ceramics

11
H. Kitahara, T. Yagi, K. Mano, M. Wada Takeda, S. Kojima and S. Nishizawa
J. Kor. Phys. Soc. 46, (2005) pp. 82-85
Dielectric Characteristics of Water Solutions of Ethanol in the Terahertz Region

10
S. Kojima and J. –H. Ko
J. Kor. Phys. Soc. 47, (2005) pp.S271-S275
Brillouin-Scattering Study of Ammonium Dihydrogen Phosphate by Using a Nonscanning Angular-Dispersion-Type Fabry-Perot Interferometer

9
S. Kojima, H. Kitahara, S. Nishizawa, Y. Yang and M. Wada Takeda
J. Mol. Struc. 744, (2005) pp.243-246
Terahertz time-domain spectroscopy of low-energy excitations in glasses

8
N. Zhong, W. Yao, P. Xiang, C. Feng, S. Kojima
Solid State Commun. 134, (2005) pp.425-429
Calcium substituting B-site in relaxor ferroelectrics with perovskite structure probed by chemical ordering

7
A. Hushur, S. Kojima, M. Kodama, B. Whittington, M.Olesiak, M. Affatigato and S. A. Feller
Jpn. J. Appl. Phys. 44, 6683 (2005)
Elastic Anomaly of Glass Transitions in Lithium Silicate

6
S. G. Lushnikov, A. I. Fedoseev, J. –H. Ko and S. Kojima
Jpn. J. Appl. Phys. 44, 7156 (2005)
Orientational Field-Induced Effects in Brillouin Spectra of Lead Magnesium Niobate Crystals

5
A. Hushur, Y. Akishige and S. Kojima
Materials Science and Engineering B 120 (2005) pp.45–49
Raman scattering study on ferroelectric (Ba0.32Sr0.68)2Nb2O7 ceramics

4
S. Ike and S. Kojima
J. Mol. Struc. 744, (2005) pp.521-524
Brillouin scattering study of liquid–glass transitions of aminopropanols

3
A. I. Fedoseev, S. G. Lushnikov,1 J.-H. Ko and S. Kojima
Ferroelectrics, 320 (2005) pp.75–78
Elastic Properties of Disordered Lead Scandotantalate Crystal

2
G. Shabbir, Y. Akishige, S. Kojima
Science and Technology of Advanced Materials 6 (2005) pp.656–659
Normal-incommensurate phase transition in (Sr1-xBax)2Nb2O7 ferroelectric single crystals

1
S. Kojima, H. Kitahara, S. Nishizawa and M. Wada Takeda
Ferroelectrics 314 (2005) pp.1-8
Complex dispersion relation of phonon-polariton in congruent LiNbO3 studied by THz-TDS

2004

Original papers

7
J. -H. Ko and S. Kojima
Phys. Ltt. A 321 (2004) pp.141-146
Brillouin scattering study on the polypropylene glycol by using a nonscanning Fabry-Perot interferometer

6
M. Anwar, G. Shabbir, J.-H. Ko and S. Kojima
J. Phys. D. 37 (2004) pp.1127-1131
The phase transitions of ferroelectric Sr2Ta2O7 crystals by MDSC, Brillouin and dielectric spectroscopy

5
J. Oh, J.A. Seo, G. S. Jeen, H. K. Kim, Y. H. Hwang and S. Kojima
J. Kor. Phys. Soc. 44 (2004) pp.527-529
Dielectric study of the secondary relaxation in glucose-water mixtures

4
M. Maczka, J.-H. Ko, D. Wlosewicz, P. E. Tomaszewski, S. Kojima, J. Hanuza and A. Majchrowski
Solid State Ionics 167 (2004) pp.309-315
Heat capacity and dielectric studies of ferroelectric superionic conductor RbNbWO6

3
S. Lushnikov, J. -H. Ko and S. Kojima
Appl. Phys. Lett. 84 (2004) pp.4798-4800
Anomalous field-induced effects in the sound velocity in lead magnesium niobate probed by micro-Brillouin scattering

2
S. Lushnikov, J. -H. Ko and S. Kojima
JETP Lett. 79 (2004) pp.686-690
E-T phase diagram of the relaxor ferroelectric lead magnesium niobate in Brillouin scattering spectra

1
A. Hushur, H. Shigematsu, Y. Akishige and S. Kojima
Jpn. J. Appl. Phys. 43 (2004) pp.6825-6828
Observation of relaxation mode in ferroelectric barium dititanate by micro-Brillouin scattering

Proceedings, Special issues

20
Y. Ike and S. Kojima
Proc. Slow Dynamics in Complex Systems 708 (2004) pp.693-694
High-resolution Brillouin Scattering Study of Intermediate Glass-forming Materials

19
G. Shabbir and S. Kojima
Ceramics Interational 30 (2004) pp.1707-1710
Breillouin scattering investigations of lead mangnesium niobate-lead titanate single crystal

18
A. Hushur, Y. Akishige and S. Kojima
Ceramics Interational 30 (2004) pp.2023-2027
Soft optical phonon in Ba-doped Sr2Nb2O7 ceramics

17
G. Shabbir, C. Feng and S. Kojima
Trans. MRS. Jpn. 29 (2004) pp.1131-1133
Study of Acoustic Anomalies in Pb(Mg1/3Nb2/3)O3-PbTiO3 Relaxor Single Crystal

16
D.-H. Kim, J. -H. Ko, and S. Kojima
Trans. MRS. Jpn. 29 (2004) pp.1147-1149
Micro-Brillouin Scattering Study of Pb[(Zn1/3Nb2/3)0.91Ti0.09]O3 Relaxor Ferroelectric Crystals

15
S. Kojima H. Kitahara, S. Nishizawa and M. Wada Takeda
Proc. SPIE, 5352 (2004) pp.208-215
Far-infrared phonon-polariton dispersion studied by THz time-domain spectroscopy

14
S. Kojima, H. Kitahara, S. Nishizawa and M. Wada Takeda
Proc. Slow Dynamics in Complex Systems 708 (2004) pp.669-670
Terahertz Time Domain Spectroscopy of Boson Peak

13
G. Shabbir and S. Kojima
Ferroelectrics 303 (2004) pp.167-171
Central Peak in PLZT Relaxors Studied by Micro-Brillouin Scattering

12
S. Kojima H. Kitahara, S. Nishizawa and M. Wada Takeda
Ferroelectrics 303 (2004) pp.221-225
Terahertz Time Domain Spectroscopy of Polariton Dispersion in Ferroelectric Lithium Niobate Crystals

11
S. Lushnikov, J.-H. Ko and S. Kojima
Ferroelectrics 303 (2004) pp.203-205
Brillouin Light Scattering in Complex Perovskite

10
G. Shabbir and S. Kojima| Ceramics International 30 (2004) pp.1707-1710
Brillouin scattering investigations of lead mabnesium niobate-lead titanate single crystal

9
A. Hushur, Y. Akishige and S. Kojima
Ceramics International 30 (2004) pp.2023-2027
Soft optical phonon in Ba-doped Sr2Nb2O7 ceramics

8
Y. Ike, Furuta, Kuroda, Sugiura and S. Kojima
Proc. of 18th International Congress on Acoustics, Kyoto 2004.IV, pp.3103-3104.
Measurements of elastic properties of optical crystals by real time laser light scattering spectroscopy

7
D.-H. Kim, J. -H. Ko, and S. Kojima
Proc. of 18th International Congress on Acoustics, Kyoto 2004.II, pp.1623-1626
Brillouin scattering study of potassium lithium niobate crystals

6
S. Kojima, H. Kitahara, S. Nishizawa and M. Wada Takeda
phys. stat. sol. (c) 1 (2004) pp.2674-2677
Complex disperion relation of phonon-polariton in stoichiometric LiNbO3

5
A. M. Pugachev, H. Anwar, and S. Kojima~ Phys. Stat. Sol. (c) 1 (2004) pp.3122-3125
Order-disorder nature of lithium tantalite probed by broadband Brillouin scattering spectroscopy

4
M. Kodama, S. Kojima, M. Affigato and S. Feller
Proc. XXth International Congress on Glass, 2004, Kyoto, P-07-040
Velocity of sound in lithium borate glass and cesium borate glass in the low concentration range of modifiers

3
A. Hushur, M. Affigato, S. Feller, M. Kodama and S. Kojima
Proc. XXth International Congress on Glass, 2004, Kyoto, P-07-026
Brillouin scattering study of lithium silicate glass

2
S. Kojima, H. Kitahara, S. Nishizawa and M. Wada Takeda
Proc. XXth International Congress on Glass, 2004, Kyoto, O-07-080
Terahertz time domain spectroscopy of glass science

1
Y. Ike and S. Kojima
Proc. XXth International Congress on Glass, 2004, Kyoto, P-07-027
Nonscannning Brilloouin scattering spectroscopy application to glassy materials

2003

Original papers

12
M. Maczka, J. Hanuza, J. -H. Ko and S. Kojima
Phys. Rev. B 68 (2003)174101-1
High-resolution broadband Brillouin scattering study of antiferroelectric phase transition in CsBi(MoO4)2”

11
G. Shabbir and S. Kojima
J. Phys. Condens. Matter 15 (2003) pp.7717-7726
A micro-Brillouin scattering study of the acoustic properties of PLZT relaxor ceramics

10
M. Maczka, J. Hanuza, J. -H. Ko and S. Kojima
J. Appl. Phys. 63 (2003) pp.3781-3784
Brillouin scattering in RbNbWO6

9
J. -H. Ko, D.-H. Kim and S. Kojima
Appl. Phys. Lett. 83 (2003) pp.2037-2039
Elastic response to different electric-field direction in relaxor ferroelectric PZNT single crystals”

8
G. Shabbir and S. Kojima
Europhysics Lett. 63 (2003) pp.388-393
Brillouin scattering study of La-modified lead zirconate titanate relaxor

7
G. Shabbir, J. H. Ko, S. Kojima and Q. Yin
Appl. Phys. Lett. 82 (2003) pp.4694-4698
Acoustic properties of PLZT relaxor ferroelectric ceramics studied by Brillouin scattering

6
J. H. Ko, S. Kojima and S. G. Lushnikov
Appl. Phys. Lett. 82 (2003) pp.4128-4130
Different dynamic behaviors of PMT and BMT single crystals studied by micro-Brillouin scattering and dielectric spectroscopy

5
G. Shabbir and S. Kojima
J. Phys. D: Appl. Phys. 36 (2003) pp.1036-1039
Acoustic and thermal properties of strontium pyroniobate crystals

4
M. Maczka, A. G. Souza Filho, P. T. C. Freire, J.M. Filho, S. Kojima, J. Hanuza and A. Majchrowski
J. Raman Spec. 34 (2003) pp.199-204
Pressure- and temperature dependent Raman studies of KNbW2O9 hexagonal tungsten bronze

3
J. H. Ko, D. H. Kim, S. Kojima, J. H. Kim and W. K. Choo
Jpn. J. Appl. Phys. 42 (2003) pp.3076-3079
Brillouin scattering study on polycrystalline relaxor ferroelectrics

2
H. J. Joo, SW. H. Lee, J. H. No, S. Kojima, C. C. Chou, H. K. Kim and M. S. Jang
Jpn. J. Appl. Phys. 42 (2003) pp.1292-1296
Raman Study of Effects of Hydrogen Gas Annealing on PbTiO3 Crystals

1
S. Kojima, N. Tsumura, M. Wada Takeda, and S. Nishizawa
Phys. Rev. B67 (2003) 035102
Far-infrared Phonon-Polariton Dispersion Probed by Terahertz Time Domain Spectroscopy"

Proceedings, Special issues

12
S. Kojima, H. Kitahara, S. Nishizawa and M. Wada Takeda
Jpn. J. Appl. Phys. 42 (2003) pp.6238-6241
Polariton Dispesion of LiTaO3 Probed by Terahertz Time Domain Spectroscopy

11
J. -H. Ko and S. Kojima
J. Korean Phys. Soc. 42 (2003) pp.S1298-S1301
Polarization rotation in the relaxor ferroelectric PZNT studied by micro-Brillouin scattering

10
M. Wada Takeda, S. Nishizawa and S. Kojima
J. Korean Phys. Soc. 42 (2003) pp.S1220-S1223
Terahertz time domain spectroscopic study of ferroelectrics

9
J. -H. Ko, M. Anwar and S. Kojima
J. Korean Phys. Soc. 42 (2003) pp.S1084-S1087
Elastic properties of bismuth layer-structured perovskite single crystals studied by Brillouin scattering

8
G. Shabbir, M. Anwar, J. -H. Ko and S. Kojima
J. Korean Phys. Soc. 42 (2003) pp.S1294-S1297
Dynanmical properties of Sr2Nb2O7 studied by micro- Brillouin scattering and modulated differential scanning calorimetry

7
S. Kojima, N. Tsumura, H. Kitahara, M. Wada Takeda and S. Nisizawa
Ferroelectrics 284 (2003) pp. 21-29
Far-infrared ferroelectric soft phonon-polariton probed by THz time domain spectroscopy”

6
A. I. Fedoseev, S. G. Lushnikov, S. N. Gvasaliya，J. H. Ko, S. Kojima and L. A. Shuvalov
Ferroelectrics 285 (2003) pp. 119-132
Dynamical properties of partially disordered crystals of Cs2H3(SO4)4xH2O

5
J. H. Ko, D. H. Kim, S. G. Lushnikov, R. S. Katiyar and S. Kojima
Ferroelectrics 286 (2003) pp. 61-71
Dielectric anomalies of BNSBT single crystals with tungsten bronze structure

4
S. Kojima, H. Anwar, J. H. Ko, M.Kodama, S. A. Feller, M. Affatigato, R. C. Nieuwendaal, W. J. Clarida and R. Leelasagar
Phys. Chem. Glasses, 44 (2003) pp.88-90
Brillouin and Raman spectroscopic studies of caesium lithium borate glasses

3
S. Kojima, S. Nishizawa and M. Wada Takeda
J. Mol. Struc. 651-653 (2003) pp.285−288
Complex dielectric constants of Boson peaks of PMMA probed by Terahertz Time Domain Spectroscopy

2
J. -H. Ko, N. Takada, M. Ueda and S. Kojima
J. Mol. Struc. 651-653 (2003) pp.159-163
Study of liquid-glass transition by real time Brillouin scattering

1
D. H. Kim, J. H. Ko, S. Kojima, T. H. Kim and J. H. Ro J. Korean Phys. Soc. 42 (2003) pp.S1080-1083
Brillouin scattering study of potassium lithium niobate single crystals

2002

Original papers

11
V. N. Novikov, N. V. Sourouvtsev, J. Wierdersich, S. Adichtchev, S. Kojima and E. Rossler
Europhysics Lett. 57 (2002) pp.838-844
On the origin of quasi-elastic light scattering in glasses

10
G. Matsui and S. Kojima
Phys. Lett. A 293 (2002) pp.156-160
Bifurcation of translational and rotational non-Gausian behaviors in two dimensional liquid

9
S. Lushnikov, F. M. Jiang and S. Kojima
Solid State Comm. 122 (2002) pp.129-133
Central peaks in the vibrational spectrum of the relaxor ferroelectric lead scandium tantalate

8
M. Maczka, J. Hanuza, N. Sidrov and S. Kojima
Materials Science 20 (2002) pp.105-110~ The study of thermal disordering of the KSc(WO4)2 crystal structure by Raman spectroscopy

7
J. H. Ko and S. Kojima
Jpn. J. Appl. Phys. 41 (2002) pp.3206−3209
Fast relaxation dynamics of monohydric alcohols revealed by Brillouin scattering

6
J. H. Ko and S. Kojima
Appl. Phys. Lett. 81 (2002) pp.1077-1079
Electric-field effect of Pb[Zn(1/3)Nb(2/3)(0.91)(Ti(0.09)) by micro-Brilouin scattering

5
J. -H. Ko, S. Kojima, S. Lushnikov, R. S. Katiyar, T. -H. Kim and J.-H Ro
J. Appl. Phys. 92 (2002) pp.1536-1543
Low-temperature transverse dielectric anomalies of uniaxial tungsten bronze crystals

4
J. H. Ko, H. Anwar and S. Kojima
Appl. Phys. Lett. 81 (2002) pp.4043-4045
Elastic anomaly and central peak in a ferroelectrioc phase transition of SrBi2Ta2O3

3
F. Jiang and S. Kojima
Phys. Rev. B 66 (2002) pp.184301-1-6
Central peaks and Brillouin scattering in uniaxial relaxor single crystals of Sr0.61Ba0.39Nb2O6

2
M. Anwar, J. –H. Ko, S. Kojima, S. S. Lee and M. S. Jiang
J. Korean Phys. Soc. 41 (2002) pp.763-768
Raman scattering study of A- and B-site Substitutins in Ferroelectric Bi4Ti3O12

1
J. H. Ko and S. Kojima
Rev. Sci. Instr. 73 (2002) pp.4390-4392
Nonscanning Brillouin spectroscopy applied to solid materials

Proceedings, Special issues

11
F. Jiang and S. Kojima
Ferroelectrics 266 (2002) pp.355-362
Micro-Brillouin scattering and central peaks of 0.91PZN-0.09PT crystals

10
S. Kojima, N. Tsumura, M. Wada Takeda, and S. Nishizawa
Analytical Science 17 (2002) pp.i681-i684
Far-infrared Phonon-Polariton Dispersion of Bismuth Titanate by THz Time Domain Spectroscopy

9
J. H. Ko and S. Kojima
Ferroelectrics, 270, (2002) pp.209-214
Dielectric and pyroelectric properties of strontium barium niobate at low temperatures

8
S. Kojima, N. Tsumura, M. Wada Takeda, and S. Nishizawa
Ferroelectrics, 272 (2002) pp.99-104
Terahertz Time Domain Spectroscopy of Phonon-Polariton in Ferroelectrics Bismuth Titanate

7
J. -H. Ko and S. Kojima
J. Non-Crys. Solids, 307-310 (2002) pp.154-160
Fast relaxation dynamics of ethanol revealed by Brillouin scattering

6
S. Kojima, N. Tsumura, H. Kitahara, M. Wada Takeda and S. Nishizawa
Proc. 18th Inter. Conf. Raman Spectroscopy, Budapest, 2002. Wiley, pp.213-214
Terahertz Time Domain Spectroscopy of Ordinary and Extraordinaly Phonon-Polariton in Lithium Niobate

5
J. -H. Ko and S. Kojima
J. Kor. Phys. Soc. 41 (2002) pp.241-246
Brillouin Scattering Study of Strontium Barium Niobate at Low Temperature

4
S. Kojima, N. Tsumura, H. Kitahara, M. Wada Takeda, and S. Nishizawa
Jpn. J. Appl. Phys. 41 (2002) pp.7033-7037
Terahertz Time Domain Spectroscopy of Phonon-Polaritons in Ferroelectric Lithium Niobate Crystals

3
J. H. Ko and S. Kojima
Jpn. J. Appl. Phys. 41 (2002) pp.7038-7041
Linear and nonlinear dielectric responses of Sr0.61Ba0.39Nb2O6 single crystal

2
S. Nishizawa, N. Tsumura, H. Kitahara, M. Wada Takeda and S. Kojima
Phys. Med. Bio. 47 (2002) pp.3771-3776
New Application of Teraheltz Time-Domain Spectrometry (THz-TDS) to the Phonon-Polariton Observation on Ferroelectric Crystals

1
M. Kodama and S. Kojima
J. Thermal Analysis & Calorimetriy, 69 (2002) pp.961-970
Anharmonicity and fragilty in lithium borate glass

2001

Original papers

9
M. Maczka, J. Hanuza, F. Jiang and S. Kojima
Phys. Rev. B 63 (2001) pp.144101-144111
Micro-Brillouin study of ferroelastic phase transition in KSc(MoO4)2

8
O. Y. Jeon, H. K. Kim, T. H. Kim, J. H. Ro, M. Cha and S. Kojima
J. Korean Phys. Soc. 38 (2001) pp. 138-141
Nonlinear Optical Properties of Congruent and Li-Compensated LiNbO3 Crystals

7~M. Maczka, J. Hanuza, S. Kojima and Jn der Maas
J. Solid State Chem. 158 (2001) pp.334-342
Vibrational Study of Phase Transition in KIn(WO4)2

6
J. H. Ko, F. Jiang, S. Kojima, T. A. Shaplygina and S. G. Lushnikov
J. Phys. : Condens. Matter 13 (2001) pp.5449-5462
Linear and nonlinear dielectric susceptibilities of the disordered lesad scandium tantalate

5
J. H.Ko, Z. Chao, S. Itoh and S. Kojima
Jpn. J. Appl. Phys. 40 (2001) pp.3575-3578
Brillouin Measurement of Glass-Forming Ethanol by Angular Dispersion-Type Fabry-Perot Interferometer

4
M. Maczka, J. Hanuza, F. Jiang and S. Kojima
J. Raman Spec. 32 (2001) pp.287-291
Vibrational Spectra of KNbW2O9 Hexagonal Tungsten Bronze

3~V. N. Novikov, N. V. Sourouvtsev and S. Kojima
J. Chem. Phys. 115 (2001) pp.5278-5283
On spectral shape of low-frequency excess scattering in Raman spectra of glasses

2
J. H.Ko, and S. Kojima
J. Korean Phys. Soc. 39 (2001) pp.702-707
Brillouin scattering study of primary alcohols using angular dispersion-type Fabry-Perot interferometer

1
F. Jiang, S. Kojima, C. Zhao and C. Feng
Appl. Phys. Lett. 79 (2001) pp.3938-3990
Chemical ordering in lanthanum-doped lead mangnesium niobate relaxor ferroelectrics probed by A1g Raman mode

Proceedings, Special issues

6
M. Maczka, F. Jiang, S. Kojima and J. Hanuza
J. Mol. Structure 563-564 (2001) pp.365-369
Brillouin Scatteing Study of KAl(MoO4)2 and NaAl(MoO4)2

5
S. Kojima and F. Jiang
AIP Proc., Proc. Wiliamsburg, 582 (2001) pp.61-67
Broadband Brillouin scattering of some ralxor ferroelectrics

4
F. Jiang, J. H. Ko, S. Kojima, T. A. Shaplygina and S. G. Lushnikov
Jpn. J. Appl. Phys. 41 (2001) pp.5823-5827
Dynamical Properties of PST probed by micro-Brillouin scattering

3
M. Takashige, S. Hamazaki, Y. Takaha. F. Shimizu, T. Yamaguchi, M. S. Jang and S. Kojima
Jpn. J. Appl. Phys. 41 (2001) pp.5816-5818
Study of Crystallization from Amorphous Bi4Ti3O12 by Dielectric Spectroscopy

2
S. Kojima, A. Hushur, F. Jiang, S. Hamazaki, M. Takashige, M. S. Jang and S. Shimada
J. Non-Crys. Solids 293-295 (2001) pp.250-254
Crystallization of Amorphous Bismuth Titanate

1
M. Takashige, S. Hamazaki, Y. Takaha. F. Shimizu, T. Yamaguchi, M. S. Jang and S. Kojima
Ferroelectrics. 264 (2001) pp.185-190
Study of Crystallization from Amorphous State of Ferroelectric Oxides by Scanning Probe Microscopy"

2000

Original papers

6
M. Maczka, S. Kojima, J. Hanuza and A. Pieyraszko
J. Phys. : Condens. Matter 12 (2000) pp.1691-1704
Discovery of phase transitions in Cs6In0.5W10.5O36

5
M. Maczka, S. Kojima and J. Hanuza
J. Phys. Chem. Solids 61 (2000) pp.735-742
Temperature-dependent Raman scattering spectra of CsBi(MoO4)2

4
F. Jiang and S. Kojima
Appl. Phys. Lett. 77 (2000) pp.1271-1273
Micro-heterogeneity and relaxation in 0.65PMN-0.35PT relaxor single crystals

3
F. Jiang, S. Kojima, C. Zhao and C. Feng
J. Appl. Phys. 88 (2000) pp.3608-3612
Raman scattering on the B-site order controlled by A-site substitution in relaxor Perovskite ferroelectrics

2
F. Jiang and S. Kojima
Phys. Rev. B 62 (2000) pp.8572-8575
Relaxation mode in 0.65PMN-0.35PT relaxor single crystals studied by micro-Brillouin scattering

1
S. Kojima, V. Novikov and M. Kodama
J. Chem. Phys. 113 (2000) pp.6344-6350
Fast relaxation, boson peak and anharmonicity in lithium borate glass

Proceedings, Special issues

10
S. Kojima
Ferroelectrics 239 (2000) pp.55-62
Raman Spectroscopy of Bismuth Layer Structured Ferroelctrics

9
A. Onodera, K. Yoshio, C. C. Myint, M. Tanaka, K. Hironaka and S. Kojima
Ferroelectrics 239 (2000) pp.159-166
Thermal Behavior in Ferroelectric SrBi2Ta2O9 Thin Films

8
I. S. Park and S. Kojima
Thermochimica Acta 352-353 (2000) pp.147-152
Glass transition and Structural Relaxation of Intermediate Liquids by MDSC and Dielectric Spectroscopy

7
C. Zhai, S. Itho and S. Kojima
Proc. of ICORS, Beijing, 2000, pp.394-395
Brillouin Scattering Measurement of Liquid Using Nonscanning Fabry-Perot Interferometer

6
M. Anwar, M. S. Jang and S. Kojima
Proc. of ICORS, Beijing, 2000, pp.444-445
Raman scattering study of ferroelectric lanthunum substituted bismuth titanate

5
M.Ahart, S.Kojima, M. Takagi, M.Maeda and I Suzuki
Proc. of ICORS, Beijing, 2000, pp.490-491
Temperature dependence of the high frequency Raman phonon relate to the α-β and β-γ Phase Transitions of KIO3 crystals

4
S. Kojima, F. Jiang and M. S. Jang
Proc. of ICORS, Beijing, 2000, pp.392-394
Brilluin sctattering study of the ferroelastic phase transition in lead phosphate

3
M. Takashige, S. Hamazaki, Y. Takaha. F. Shimizu, T. Yamaguchi, M. S. Jang and S. Kojima
Jpn. J. Appl. Phys. 39 (2000) pp.5716-5718
Observation of Crystallization Process from Amorphous Bi4Ti3O12 Prepared by Rapid Quenching Method

2
A. Onodera, T.Kubo, K.Yoshio, S. Kojima, H. Yamashita and T. Takama
Jpn. J. Appl. Phys. 39 (2000) pp.5711-5715
Crystal Structure of High-temperature Paraelectric Phase in Bi-Layered Perovskite Sr0.85Bi2.1Ta2O9

1
F. Jiang and S. Kojima Jpn. J. Appl. Phys. 39 (2000) pp.5705-5710
Study of Three Different Relaxor Ferroelectrics by High Resolution Micro-Brillouin Scattering