#Contents()

*酸素八面体型  Oxygen octahedral type [#wba5dad6]

**Pervskite structure [#u34b474e]

***BaTiO3, BT (ferroelectric and ferroelastic crystals) [#d668cdad]

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) [#e2ea89df]

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) [#t84a9e27]

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) [#x4555694]

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) [#j232a895]

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) [#kf3e207f]

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) [#d011195e]

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) [#va2560cd]

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) [#ddc155b1]

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 [#fd9dd319]

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 [#ob5d9e8d]

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 [#jbc73a8f]
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) [#q4e1f98c]

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 [#q74c8237]

***CaBi2Ta2O9, CaBi2Nb2O9, SrBi2Ta2O9(SBT), SrBi2Nb2O9, BaBi2Ta2O9(SBT), BaBi2Nb2O9, PbBi2Ta2O9(SBT), PbBi2Nb2O9 (ferroelectric and ferroelastic crystals) [#t0aedc9c]

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) [#y6664563]

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) [#t950eaad]

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) [#q3ffa2a4]

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 [#b7ffc22b]

***Sr2Nb2O7 (ferroelectric and ferroelastic crystals) [#u700f454]

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) [#h77e3035]

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 [#w7df32bc]

***Ba2NaNb5O15, BNN or BSN (partially ferroelectric and ferroelastic crystal) [#p759bbe8]

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) [#k5439531]

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 [#k0be6620]

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 [#q091021e]

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 [#d4d8e40a]
***LiNbO3, LN (ferroelectric crystals) [#badec63b]
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) [#v8fd3054]

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 [#i0207e8d]
**Others [#y6b30e2e]
***BaTi2O5 [#q69180eb]
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 [#q473550a]

**b-Gd2(MoO4)3, GMO (ferroelectric and ferroelastic crystals) [#n6ca5d3d]

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) [#cb1fba5e]

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) [#x42d0e2d]

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 [#xf793585]

**NdP5O14, NDPP (ferroelastic crystals) [#md67fd70]

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 [#n9ef9c40]
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) [#oa7649b7]

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) [#e4537e46]

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 [#f08a053b]

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

**BaTi2O5 [#q69180eb]
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


**ADP [#n9ef9c40]
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

** K3H(SeO4)2 [#k342be8d]
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
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