論文/物質別論文リスト/強誘電体

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酸素八面体型 Oxygen octahedral type

Pervskite structure

BaTiO3, BT (ferroelectric and ferroelastic crystals)

1
T. Nakamura, Y. Tominaga, M. Udagawa, S. Kojima and M. Takashige
Solid State Commun. 32 (1979) 95
Light Scattering Studies on Structural Phase Transitions

2
M. S. Jang and S. Kojima, T. Nakamura and M. Takashige
Ferroelectrics, 37 (1981) 717
Angular Dependence of Raman Scattering Spectra in BaTiO3

3
S. Kojima and T. Nakamura
Ferroelectrics 37 (1981) 677
Low Frequency Phonon Polaritons in Several Ferroelectrics

4
T. Nakamura, S. Kojima, M. S. Jang, M. Takashige and S. Itoh
J. de Physique 42 (1981) C6-418
E(x)-A1(z) Oblique Phonons in Tetragonal BaTiO3

5
M. S. Jang, M. Takashige, S. Kojima and T. Nakamura
J. Phys. Soc. Jpn. 52 (1983) 1025
Oblique Phonons with Special Concern to the Soft Mode Phonon in Tetragonal BaTiO3

6
S. Hamazaki, F. Shimizu, S. Kojima and M. Takashige
J. Phys. Soc. Jpn. 64 (1995) 3660
AFM Observation of 90o Domains of BaTiO3 Butterfly Crystals

7
B. Y. Zhang, F. M. Fuming, Y. Yang, Q. R. Yin, and S. Kojima
J. Appl. Phys. 80 (1996) 1916
Electron Acoustic Imaging of BaTiO3 single crystals

8
S. Kojima, Y. Ikeuchi, and Q. R. Yin
Jpn. J. Appl. Phys. 35 (1996) 5192
Raman Scattering Sudy of Cubic to Tetragonal Phase Transition of Mixed System AxBa1-xTiO3

9
M. Takashige and S. Kojima
Jpn. J. Appl. Phys. 35 (1996) 5181
Atomic Force Microscope Observation of Ferroelectrics

10
M. Takashige, S. Hamazaki, F. Shimizu and S. Kojima
Ferroelectrics,196 (1997) 211
Observation of 90 Domains in BaTiO3 by Atomic Force Microscopy

11
F. M. Jiang, S. Kojima, B. Y. Zhang, and Y. Q. Rui
Proc. of World Congress on Ultrasonics, Yokohama, 1997, p.220-
A New Method of Directly Observing Domain Structures of BaTiO3 Single Crystal by Scanning Electron Acoustic Microscope"

12.
M. Takashige, S.Hamazaki, N.Fukurai, N.Tashiro,F.Shimizu and S.Kojima
J. Phys. Soc. Jpn. 66 (1997) 2272
AFM Observation of 90o Domains of BaTiO3 under Application of an Electric Fields

13
F. M. Jiang, S. Kojima, B. Y. Zhang, and Y. Q. Rui
Ferroelectrics, 217 (1998) 335
Application of SEAM and SAM to Ferroelectric and Ferroelastic Crystals

14
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

15
S. Tsukada, Y. Hiraki, Y. Akishige, and S. Kojima
Phys. Rev. B 80, 012102 (2009)
Enhanced polarization fluctuation in KF-substituted BaTiO3 single crystals

PbTiO3, PT (ferroelectric and ferroelastic crystals)

1
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) 1292
Raman Study of Effects of Hydrogen Gas Annealing on PbTiO3 Crystals

Pb(ZrTi)O3, PZT (ferroelectric and ferroelastic crystals)

1
X. L. Dong and S. Kojima
J. Phys. Conden. Matter. 9（1997）L171
Dielectric and resonance frequency investigations of phase transitions in Nb-doped PZT95/5 and 75/25 ceramics

2
X. L. Dong and S. Kojima
Jpn. J. Appl. Phys. 36 (1997) 2989
Dynamical Properties of the FR(LT)-FR(HT) Phase Transition in Zr-Rich Lead ZirconateTitanate Ceramics

3
Y. Ikeuchi, S. Kojima and T. Yamamoto
Jpn. J. Appl. Phys. 36 (1997) 2985 Raman Scattering Study of Cubic to Tetragonal Phase Transitions of Ti-Rich Pb(ZrxTi1-x)O3

4
S. Zhang, D. Xianlin and S. Kojima
Jpn. J. Appl. Phys. 36 (1997) 2994
Temperature Dependence of Dielectric, Elastic and Piezoelectric Properties of Pb(ZrxTi1-x)O3

5
D. Xianlin and S. Kojima
Ferrolelctrics 203 (1997) 269
Structural Phase Transitions in Zr-rich Pb(Zr1-xTix) O3 Ceramics

6
X.L.Dong and S.Kojima
J. Korean Phys. Soc. 32 (1998) S1019
Anomaly in Elastic Properties of FR(LT)-FR(HT) Phase Transition in PZT75/25 Ceramics

7
S.Kojima and X.L.Dong
Jpn. J. Appl. Phys. 37 (1998) 5400
Raman scattering studies of phase transitions in Nb doped PZT95/5 and 75/25 ceramics

8
S. Kojima, N. Ohta and X.L.Dong
Jpn. J. Appl. Phys. 38 (1999) 5674
Stability of Antiferroelectric and Ferroelectric Phases in Low Ti Concentration PbZr1-xTixO3

PbLa(ZrTi)O3, PLZT (relaxor ferroelectric ceramics)

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

2
G. Shabbir, J. H. Ko, S. Kojima and Q. Yin
Appl. Phys. Lett. 82 (2003) 4694
Acoustic properties of PLZT relaxor ferroelectric ceramics studied by Brillouin scattering

3
G. Shabbir and S. Kojima
Europhysics Lett. 63 (2003) 388
Brillouin scattering study of La-modified lead zirconate titanate relaxor

4
G. Shabbir and S. Kojima
Ferroelectrics 303 (2004) pp.167-171
Central Peak in PLZT Relaxors Studied by Micro-Brillouin Scattering

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

6
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

7
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.

Pb(ZnNb)O3-PbTiO3, PZT-PT (relaxor ferroelectric crystals)

1
F. Jiang and S.Kojima
Jpn. J. Appl. Phys. 38 (1999) 5128
Raman scattering and heat capacity study of relaxor PZN-PT

2
F.Jiang and S. Kojima
Ferroelectrics, 57 (1999) 697
Raman Scattering Study of 0.91Pb(Zn1/3Nb2/3)O3-0.09PbTiO3 Relaxor Ferroelectric Crystals

3
F. Jiang and S. Kojima
Ferroelectrics 266 (2002) 355
Micro-Brillouin scattering and central peaks of 0.91PZN-0.09PT crystals

4
J. H. Ko and S. Kojima
Appl. Phys. Lett. 81 (2002) 1077
Electric-field effect of Pb[Zn(1/3)Nb(2/3)(0.91)(Ti(0.09)) by micro-Brilouin scattering

5
J. -H. Ko and S. Kojima
J. Korean Phys. Soc. 42 (2003) S1298
Polarization rotation in the relaxor ferroelectric PZNT studied by micro-Brillouin scattering

6
J. -H. Ko, D.-H. Kim and S. Kojima
Appl. Phys. Lett. 83 (2003) 2037 Elastic response to different electric-field direction in relaxor ferroelectric PZNT single crystals”

7
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

8
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

9
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

10
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

11
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” 12
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

13
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

14
J.-H. Ko and S. Kojima, Ferroelectrics 347 (2007) 25-29
Low-frequency central peaks in relaxor ferroelectric PZN-9%PT single crystals

Pb(MgNb)O3-PbTiO3, PMT-PT (relaxor ferroelectric crystals)

1
F. Jiang and S. Kojima
Appl. Phys. Lett. 77 (2000) 1271
Micro-heterogeneity and relaxation in 0.65PMN-0.35PT relaxor single crystals

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

3
F. Jiang and S. Kojima
Jpn. J. Appl. Phys. 39 (2000) 5705
Study of Three Different Relaxor Ferroelectrics by High Resolution Micro-Brillouin Scattering

4
S. Kojima and F. Jiang
AIP Proc. 582 (2001) 61
Broadband Brillouin scattering of some ralxor ferroelectrics

5
G. Shabbir and S. Kojima
Ceramics Interational 30 (2004) pp.1707-1710
Breillouin scattering investigations of lead mangnesium niobate-lead titanate single crystal

6
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

7
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

8
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 68%PbMg1/3Nb2/3O3–32%PbTiO3

Pb(MgNb)O3, PMN (relaxor)

1
F. Jiang, S. Kojima, C. Zhao and C. Feng
J. Appl. Phys. 88 (2000) 3608
Raman scattering on the B-site order controlled by A-site substitution in relaxor Perovskite ferroelectrics

2
F. Jiang, S. Kojima, C. Zhao and C. Feng
Appl. Phys. Lett. 79 (2001) 3938
Chemical ordering in lanthanum-doped lead mangnesium niobate relaxor ferroelectrics probed by A1g Raman mode

3
J. H. Ko, S. Kojima and S. G. Lushnikov
Appl. Phys. Lett. 82 (2003) 4128
Different dynamic behaviors of PMT and BMT single crystals studied by micro-Brillouin scattering and dielectric spectroscopy

4
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

5
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

6
S. Lushnikov, J.-H. Ko and S. Kojima
Ferroelectrics 303 (2004) pp.203-205
Brillouin Light Scattering in Complex Perovskite

7
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

8
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

9
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

Pb(ScTa)O3, Pb(ScNb)O3 (relaxor)

1
J. H. Ko, F. Jiang, S. Kojima, T. A. Shaplygina and S. G. Lushnikov
J. Phys. : Condens. Matter 13 (2001) 5449
Linear and nonlinear dielectric susceptibilities of the disordered lesad scandium tantalite

2
F. Jiang, J. H. Ko, S. Kojima, T. A. Shaplygina and S. G. Lushnikov
Jpn. J. Appl. Phys. 41 (2001) 5823
Dynamical Properties of PST probed by micro-Brillouin scattering

3
S. Lushnikov, F. M. Jiang and S. Kojima
Solid State Comm. 122 (2002) 129
Central peaks in the vibrational spectrum of the relaxor ferroelectric lead scandium tantalate

4
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

5
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

6
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

Pb(YbTi)O3 (relaxor)

1
J. H. Ko, D. H. Kim, S. Kojima, J. H. Kim and W. K. Choo
Jpn. J. Appl. Phys. 42 (2003) 3076
Brillouin scattering study on polycrystalline relaxor ferroelectrics

Ba(MgTa)O3, BMT

1
J. H. Ko, S. Kojima and S. G. Lushnikov
Appl. Phys. Lett. 82 (2003) 4128
Different dynamic behaviors of PMT and BMT single crystals studied by micro-Brillouin scattering and dielectric spectroscopy

(Na0.5K0.5)NbO3-SrTiO3

1
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

2
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 ”

Bi(Mg1/2Zr1/2)O3-PbTiO3

1
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)O3-xPbTiO3 high temperature piezoelectric ceramics

KIO3 (ferroelectric and ferroelastic crystals)

1
M.Ahart, S.Kojima, M. Takagi, M.Maeda and I Suzuki
Jpn. J. Appl. Phys. 37 (1998) 5687
Soft Modes Responsible for a-b and b-g Phase Transitions of KIO3 crystals

2
M.Ahart, S.Kojima, M. Takagi, M.Maeda and I Suzuki
Proc. of ICORS, Beijing, 2000, p.490-
Temperature dependence of the high frequency Raman phonon relate to the a-b and b-g　Phase Transitions of KIO3 crystals

layered perovskite structure

CaBi2Ta2O9, CaBi2Nb2O9, SrBi2Ta2O9(SBT), SrBi2Nb2O9, BaBi2Ta2O9(SBT), BaBi2Nb2O9, PbBi2Ta2O9(SBT), PbBi2Nb2O9 (ferroelectric and ferroelastic crystals)

1
S. Kojima, K. Sakata and K.Honnma
Ferroelectrics 185 (1996) 173
Raman scattering Study of Ferroelectric Phase Transition in PbBi2Nb2O9 Single Crystal

2
S.Kojima
J. Phys.: Condens. Matter, 10 (1998) L327
Optical Mode Softening in SrBi2Ta2O9 and Related Materials

3
S.Kojima and I.Saitoh
Physica. B 263-264 (1999) 653
Soft phonon and bismuth content in ferroelectric SrBi2Ta2O9

4
S. Kojima and I.Saitoh
Proc. IEEE　ISAF, 98CH36245 (1999) 471
Optical Mode Softening of Ferroelectric SrBi2(NbxTa1-x)2O9 System

5
A. Onodera, K/ Yoshio, C. C. Myint, S. Kojima, H. Yamashita and T. Takao
Jpn. J. Appl. Phys. 38 (1999) 5683
Thermal Properties and Phase Transitions in Layered Perovskite SBT

6
S. Kojima, Ferroelectrics 239 (2000) pp.55-62. "Raman Spectroscopy of Bismuth Layer Structured Ferroelctrics"

7
A. Onodera, K. Yoshio, C. C. Myint, M. Tanaka, K. Hironaka and S. Kojima
Ferroelectrics 239 (2000) 159
Thermal Behavior in Ferroelectric SrBi2Ta2O9 Thin Films

8
A. Onodera, T.Kubo, K.Yoshio, S. Kojima, H. Yamashita and T. Takama
Jpn. J. Appl. Phys. 39 (2000) 5711
Crystal Structure of High-temperature Paraelectric Phase in Bi-Layered Perovskite Sr0.85Bi2.1Ta2O9

9
J. H. Ko, H. Anwar and S. Kojima
Appl. Phys. Lett. 81 (2002) 4043
Elastic anomaly and central peak in a ferroelectrioc phase transition of SrBi2Ta2O9

Bi3TiNbO9, Bi3TiTaO9 (ferroelectric and ferroelastic crystals)

1
I.Saitoh and S.Kojima
Ferroelectrics, 217 (1998) 83
Softening of Low-Frequency Modes in Ferroelectric Bi3TiNbO9 and Bi3TiTaO9

2
S. Kojima
Ferroelectrics 239 (2000) 55
Raman Spectroscopy of Bismuth Layer Structured Ferroelctrics

Bi4Ti3O12 (ferroelectric and ferroelastic crystals)

1
S. Kojima, R. Imaizumi, S. Hamazaki and M. Takashige
Jpn. J. Appl. Phys. 33 (1994) 5559
Raman Scattering Study of Bismuth Layer-Structure Ferroelectrics

2
S. Kojima and S. Shimada
Physica B219&220 (1996) 617
Soft Mode Spectroscopy of Bismuth Titanate Single Crystals

3
F. M.Jiang, S. Kojima, B. Y. Zhang, and Y. Q. Rui
Ferroelectrics, 217 (1998) 335
Application of Scanning Electron Acoustic Microsope to Ferroelectric and Ferroelastic Crystals

4
F.Jiang, S. Kojima, Y. Yang, and Y. Q. Rui
Ferroelectrics, 222 (1999) 237
Domain Observation of Ferroelectric Bi4Ti3O12 and Ferroelastic NdP5O14 Single Crystals with Scanning Electron Acoustic Microsope

5
M. Anwar, M. S. Jang and S. Kojima
Proc. of ICORS, Beijing, 2000, p.444
Raman scattering study of ferroelectric lanthunum substituted bismuth titanate

6
S. Kojima, N. Tsumura, M. Wada Takeda, and S. Nishizawa
Analytical Science 17 (2002) p.i681
Far-infrared Phonon-Polariton Dispersion of Bismuth Titanate by THz Time Domain Spectroscopy

7
M. Anwar, J. H. Ko, S. Kojima, S. S. Lee and M. S. Jiang
J. Korean Phys. Soc. 41 (2002) 763
Raman scattering study of A- and B-site Substitutins in Ferroelectric Bi4Ti3O12

8
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

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

CaBi4Ti4O15, SrBi4Ti4O15, BaBi4Ti4O15, PbBi4Ti4O15 (ferroelectric and ferroelastic crystals)

1
S. Kojima, R. Imaizumi, S. Hamazaki and M. Takashige
Jpn. J. Appl. Phys. 33 (1994) 5559
Raman Scattering Study of Bismuth Layer-Structure Ferroelectrics

2
S. Kojima, R. Imaizumi, S. Hamazaki and M. Takashige
J. Mol. Struc. 348 (1995) 37
Raman Scattering Study of Bismuth Layer Oxides ABi4Ti4O15

perovskite slab structure

Sr2Nb2O7 (ferroelectric and ferroelastic crystals)

1
S. Kojima, K. Ohi, M. Takashige, T. Nakmura and H. Kakinuma
Solid State Commun 31 (1979) 755
Optical Mode Softening in The Incommensurate Phase of Sr2Nb2O7

2
S. Kojima and T. Nakamura
Ferroelectrics, 25 (1980) 589
Raman Scattering Studies on High Pressure Phase Transitions of Several Crystals

3
S. Kojima, K. Ohi and T. Nakamura
J. Phys. Soc. Jpn. 49 (1980) Suppl.B, 41
Raman Scattering Studies on Sr2Nb2O7 and Sr2Ta2O7

4
S. Kojima, M. S. Jang, K. Ohi and T. Nakamura
J. Phys. Soc. Jpn. 50 (1981) 2787
Polariton Dispersion and Infrared Active Soft Modes in Ferroelectric Sr2Nb2O7

5
M. S. Jang, S. Kojima, K. Ohi and T. Nakamura
Ferroelectrics 38 (1981) 837
Ferroelectric Soft Mode in Sr2Nb2O7

6
K. Ohi and S. Kojima
Jpn. J. Appl. Phys. 24 (1985) Suppl. 24-2, 817
Successive Phase Transions and Their Soft Modes in Ferroelectric Sr2Nb2O7

7
G. Shabbir and S. Kojima
J. Phys. D: Appl. Phys. 36 (2003) 1036
Acoustic and thermal properties of strontium pyroniobate crystals

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

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

10
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

11
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

Sr2Ta2O7 (ferroelectric and ferroelastic crystal)

1
S. Kojima, K. Ohi and T. Nakamura
Solid State Commun. 35 (1980) 79
Soft Opic Phonon Responsible for The Structural Phase Transition in Sr2Ta207 at 170oC

2
S. Kojima, K. Ohi and T. Nakamura
J. Phys. Soc. Jpn. 49 (1980) Suppl.B 41-42
Raman Scattering Studies on Sr2Ta207 and Sr2Ta207

3
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

4
Anwar Hushur and Seiji Kojima
Materials Science and Engineering: A 442（2006）pp.35-38
Brillouin scattering study on ferroelectric single crystal Sr2Ta2O7

tungsten bronze structure

Ba2NaNb5O15, BNN or BSN (partially ferroelectric and ferroelastic crystal)

1
S. Kojima, K. Asaumi, T. Nakamura and S. Minomura
J. Phys. Soc. Jpn. 45 (1978) 1433^ Crystal-optic Observation of High-Pressure Phase Transition in Barium Sodium Niobate

2
S. Kojima, T. Nakamura, K. Asaumi, M. Takashige and S. Minomura
Solid State Commun. 29 (1979) 779
Raman Scattering Studies on Phase Transition in Barium Sodium Niobate at High-Pressure"

3
S. Kojima and T. Nakamura
Jpn. J. Appl. Phys. 19 (1980) L609
Observation of Low Frequency Polaritons in Barium Sodium Niobate

4
S. Kojima and T. Nakamura
J. Phys. Soc. Jpn.49 (1980) Suppl.B, 42
Raman Scattering Study of Low Frequency Phonon Polaritons in Barium Sodium Niobate

5
S. Kojima, S. Hamazaki, M. Tsukioka and M. Takashige
J. Phys. Soc. Jpn. 62 (1993) 1097
Raman Scattering Study of Ba2NaNb5(1-x)Ta5xO15

6
M.Takashige, S. Kojima, S. Hamazaki and M. Tsukioka
Jpn. J. Appl. Phys. 32 (1993) 4384
Phase Transitions of Ba2NaNb5(1-x)Ta5xO15

7
S. Kojima, S. Hamazaki, M. Tsukioka an M. Takashige
Ferroelectrics, 152 (1994) 295
Raman Scattering of Phase Transitions of Ba2NaNb5(1-x)Ta5xO15

8
S. Kojima, S. Hamazaki, M. Tsukioka an M. Takashige
Proc. 14th Int. Conf. Raman Spectroscopy, Hong Kong, ed. by N.T.Yu and X.Y.Li, 1994,p.756-
Raman Study of Ba2NaNb5(1-x)Ta5xO15

9
S. Hamazaki, S. Sawada, S. Kojima, M. Tsukioka and M. Takashige
J. Phys. Soc. Jpn. 64 (1995) 4004
Ferroelectric Properties of Tungsten-Bronze Oxides with A2A'Ta5015 type

10
R. Mizaras, M. Takashige, J. Banys, S.Kojima, J. Grigas, S.Hamazaki, and A. Brilingas
J. Phys. Soc. Jpn. 66 (1997) 2881
Dielectric Relaxation in Ba2NaNb5(1-x)Ta5xO15 Single Crystals

Sr1-xBaxNb2O6, SBN (relaxor ferroelectric crystals)

1
S. Kojima and T. Nakamura
Ferroelectrics 25 (1980) 589
Raman Scattering Studies on High Pressure Phase Transitions of Several Crystals

2
F. Jiang and S. Kojima
Jpn. J. Appl. Phys. 39 (2000) 5705
Study of Three Different Relaxor Ferroelectrics by High Resolution Micro-Brillouin Scattering

3
S. Kojima and F. Jiang
AIP Proc. 582 (2001) 61
Broadband Brillouin scattering of some ralxor ferroelectrics

4
J. H. Ko and S. Kojima
Ferroelectrics, 270, (2002) 209
Dielectric and pyroelectric properties of strontium barium niobate at low temperatures

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

6
J. -H. Ko and S. Kojima
J. Kor. Phys. Soc. 41 (2002) 241
Brillouin Scattering Study of Strontium Barium Niobate at Low Temperature

7
F. Jiang and S. Kojima
Phys. Rev. B 66 (2002) 184301-1
Central peaks and Brillouin scattering in uniaxial relaxor single crystals of Sr0.61Ba0.39Nb2O6

8
J. H. Ko and S. Kojima
Jpn. J. Appl. Phys. 41 (2002) 7038
Linear and nonlinear dielectric responses of Sr0.61Ba0.39Nb2O6 single crystal

9
J. H. Ko, D. H. Kim, S. G. Lushnikov, R. S. Katiyar and S. Kojima
Ferroelectrics 286 (2003) 61
Dielectric anomalies of BNSBT single crystals with tungsten bronze strudture

KxLi1-xNbO3, KLN

1
J. -H. Ko, S. Kojima, S. Lushnikov, R. S. Katiyar, T. -H. Kim and J.-H Ro
J. Appl. Phys. 92 (2002) 1536
Low-temperature transverse dielectric anomalies of uniaxial tungsten bronze crystals

2
D. H. Kim, J. H. Ko, S. Kojima, T. H. Kim and J. H. Ro
J. Korean Phys. Soc. 42 (2003) S1080
Brillouin scattering study of potassium lithium niobate single crystals

3
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

Other tungsten bronze dielectrics

1
M. Maczka, S. Kojima, J. Hanuza and A. Pieyraszko
J. Phys. : Condens. Matter 12 (2000) 1691
Discovery of phase transitions in Cs6In0.5W10.5O36"

2
M. Maczka, J. Hanuza, F. Jiang and S. Kojima
J. Raman Spec. 32 (2001) 287
Vibrational Spectra of KNbW2O9 Hexagonal Tungsten Bronze

3
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) 199
Pressure- and temperature dependent Raman studies of KNbW2O9 hexagonal tungsten bronze

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

LiNbO3, LiTaO3 structure

LiNbO3, LN (ferroelectric crystals)

1
S. Kojima and T. Nakamura
Ferroelectrics 37 (1981) pp.677-680
Low Frequency Phonon Polaritons in Several Ferroelectrics

2
S. Kojima
Jpn. J. Appl. Phys. 32 (1993) pp.4373-4376
Composition Variation of Optical Phonon Damping in Lithium Niobate Crystals 　 3
S. Kojima
Ferroelectrics, 152 (1994) pp.301-306
Raman Scattering Study of Stoichiometric Lithium Niobate Crystal

3
S.Kojima
J. Korean Phys. Soc. 32 (1998) S552-S555
Raman Scattering Study of Composition Variation in the Low-Frequency A1(z) Modes in LiNbO3

4
S. Kojima
Ferroelectrics, 223 (1999) pp.63-70
Order Disorder Nature of Ferroelectric Phase Transition in Stoichiometric LiNbO3 Crystal

5
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

6
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

7
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

8
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

9
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

10
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

11
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

12
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

13
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

LiTaO3, LT (ferroelectric crystals)

1
S. Kojima and T. Nakamura
Ferroelectrics 52 (1983) 171
Polariton-Spectroscopy in Several Ferroelectric Crystals

2
S. Kojima H. Kitahara, S. Nishizawa and M. Wada Takeda
Jpn. J. Appl. Phys. 42 (2003) 6238 Polariton Dispesion of LiTaO3 Probed by Terahertz Time Domain Spectroscopy

3
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

Others

BaTi2O5

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

2
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

3
A. Hushur, H, Shigematsu, Y. Akishige, and S. Kojima
Appl. Phys. Lett. 86, 112903 (2005) Order-disorder nature of ferroelectric BaTi2O5

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

酸素四面体型 Oxygen tetrahedral type

b-Gd2(MoO4)3, GMO (ferroelectric and ferroelastic crystals)

1
S. Kojima, K. Ohi and T. Nakamura
J. Phys. Soc. Jpn. 41 (1976) 162
Temperature Dependence of Electro-optic Coefficient and Spontaneous Birefringence of Ferroelectric Gadolinium Molybdate

2
S. Kojima and T. Nakamura
Jpn. J. Appl. Phys. 17 (1978) 947
Prismatic Domain in Gd2(MoO4)3

3
S. Kojima and T. Nakamura
Phys. Rev. B18 (1978) 453
Electro-optical Properties of Gadolinium Molybdate

4
S. Kojima and T. Nakamura
Ferroelectrics, 21 (1978) 351
Optical Properties in Gadolinium Molybdate

5
M. Takashige, S.Hamazaki, F.Shimizu and S.Kojima
Ferroelectrics 203 (1997) 221
Surface Morphology of GMO by Atomic Force Microscopy

KSc(WO4)2, KSc(MoO4)2, KAl (WO4)2 , KAl (MoO4)2 , KIn(WO4)2 , NaAl (MoO4)2 , CsBi(WO4)2, CsBi(MoO4)2 family (ferroelectric,antiferroelectric and ferroelastic crystals)

1
M. Maczka, S. Kojima and J. Hanuza
J. Phys. Condens. Matter. 10 (36) (1998) 8093
High-temperature Phase Transition in a layered Caesium-Bismuth Double Molybdate: Raman Study of Lattice Modes

2
M. Maczka, S. Kojima and J. Hanuza
J. Phys. Chem. Solids 59 (1998) 1429
Heat capacity measurements of the normal- incommensurate and lock-in transitions in KSc(WO4)2 and KSc(MoO4)2

3
M. Maczka, S. Kojima and J. Hanuza
J. Raman Spectroscopy. 30 (1999) 339-345
Raman spectroscopy of KAl(WO4)2 and NaAl(MoO4)2 single crystals

4
M. Maczka, S. Kojima and J. Hanuza
J. Phys. Soc. Jpn. 68 (1999) 1948
Temperature dependence of Raman scattering Spectra of KSc(WO4)2

5
M. Maczka, S. Kojima and J. Hanuza
Ferroelectrics, 57 (1999) 165
Raman and Infrared Study of Phase Transition in Potasium Scandium Double Tungstate

6
M. Maczka, S. Kojima and J. Hanuza
J. Korean Soc. Phys. 35 (1999) S1503
Application of Simple Lattice Dynamics Models to Analysis of Low-Frequency Vibrational Spectra of Layered Compounds

7
M. Maczka, S. Kojima and J. Hanuza
J. Phys. Chem. Solids 61 (2000) 735
Temperature-dependent Raman scattering spectra of CsBi(MoO4)2

8
M. Maczka, J. Hanuza, F. Jiang and S. Kojima
Phys. Rev. B 63 (2001) 144101
Micro-Brillouin study of ferroelastic phase transition in KSc(MoO4)2

9
M. Maczka, J. Hanuza, S. Kojima and Jn der Maas
J. Solid State Chem. 158 (2001) 334
Vibrational Study of Phase Transition in KIn(WO4)2

10
M. Maczka, F. Jiang, S. Kojima and J. Hanuza
J. Mol. Structure 563-564 (2001) 365
Brillouin Scatteing Study of KAl(MoO4)2 and NaAl(MoO4)2

11
M. Maczka, J. Hanuza, N. Sidrov and S. Kojima
Materials Science 20 (2002) 105
The study of thermal disordering of the KSc(WO4)2 crystal structure by Raman spectroscopy

12
M. Maczka, J. Hanuza, J. -H. Ko and S. Kojima
J. Appl. Phys. 63 (2003) 3781
Micro-Brillouin scattering study of antiferroelectric phase transition in CsBi(MoO4)2

13
M. Maczka, J. Hanuza, J. -H. Ko and S. Kojima
Phys. Rev. B 68 (2003) pp.174101-1-8
High-resolution broadband Brillouin scattering study of antiferroelectric phase transition in CsBi(MoO4)2

14
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

15
M. Mączka, 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

A2BO4 family (ferroelectric crystals)

1
T. Nakamura, S. Kojima, M. Takashige, T. Mitsui, K. Asaumi, S. Itoh and S. Minomura
Jpn. J. Appl. Phys. 18 (1979) 771
Point Group Symmetry of NH4 LiSO4 at High-Pressure

2
M. Takashige,T. Nakamura, M. Udagawa, S. Kojima, S. Hirotu and S. Sawada
J. Phys. Soc. Jpn.48 (1980) 150
Raman Scattering Study on Rb2ZnSO4

3
T. Nakamura, S. Kojima, M. Takashige and T. Mitsui
Ferroelectrics 25 (1980) 435
Point Group Symmetry of NH4 LiSO4 at High Pressure Phase

その他誘電体結晶　Other dielectric crystals

NdP5O14, NDPP (ferroelastic crystals)

1
K. Asaumi, S. Kojima and T. Nakamura
J. Phys. Soc. Jpn. 48 (1980) 1298
Effect of The Hydrostatic Pressure on The Ferroelastic NdP5O14

2
S. Kojima
Jpn. J. Appl. Phys. 26 (1987) Suppl. 26-1, 233
Interference Fringe in Reflection Acoustic Microscopy

3
S. Kojima
Ferroelectrics 106 (1990) 911
Anomalous Dynamical Response at a Ferroelastic Domain Wall Studied by Acoustic Microscopy"

4
S. Kojima
Int. J. Engin. Sci. 29 (1991) 309
Reflection Acoustic Microscopy to Crystalline Materials

5
S. Hamazaki, F. Shimizu, S. Kojima and M. Takashige
J. Korean Phys. Soc. 29 (1996) S503
Ferroelectric Domains Studied by Atomic Force Microscopy

6
M.Takashige, S. Hamazaki, H. Shimizu and S.Kojima
J. Korean Phys. Soc. 32 (1998) S721
AFM Observation of Ferroelectric and Ferroelastic Crystals

7
F. Jiang, S. Kojima, B. Y. Zhang, and Y. Q. Rui
Jpn. J. Appl. Phys. 37 (1998) 3128
Some New Applications of Scanning Electron Acoustic Microsope for Material Evaluation

8
S. Hamazaki, M. Takashige and S. Kojima
Ferroelectrics, 219 (1998) 819
The Surface Images of Monoclinic Domains in NdP5O14 and WO3 by Atomic Force Microscopy

9
F. M.Jiang, S. Kojima, B. Y. Zhang, and Y. Q. Rui
Ferroelectrics, 217 (1998) 335 Application of Scanning Electron Acoustic Microsope to Ferroelectric and Ferroelastic Crystals

10
F.Jiang, S. Kojima, Y. Yang, and Y. Q. Rui
Ferroelectrics, 222 (1999) 237
Domain Observation of Ferroelectric Bi4Ti3O12 and Ferroelastic NdP5O14 Single Crystals with Scanning Electron Acoustic Microsope

ADP

1
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

Pb3(PO4)2, PPO (ferroelastic crystals)

1
S. Kojima, F. Jiang and M. S. Jang
Proc. of ICORS, Beijing, 2000, p392-
Brillouin sctattering study of the ferroelastic phase transition in lead phosphate"

TANANE (ferroelastic crystals)

1
M. S. Jang, T. Nakamura, M. Takashige and S. Kojima
Jpn. J. Appl. Phys. 19 (1980) 1413
Crystal Growth and Polymorphism of 2,2,6,6,-Tetramethyl-Piperidino Oxy

2
M. S. Jang, T. Nakamura, M. Takashige and S. Kojima
Jpn. J. Appl. Phys. 20 (1981) 661 A Note on the Transition Mechanism in 2,2,6,6,-Tetramethyl-Piperidino Oxy

Cs2H3(SO4)4xH2O

1
A. I. Fedoseev, S. G. Lushnikov, S. N. Gvasaliya，J. H. Ko, S. Kojima and L. A. Shuvalov
Ferroelectrics 285 (2003) 119
Dynamical properties of partially disordered crystals of Cs2H3(SO4)4xH2O

2
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

3
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

K3H(SeO4)2

1
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