広島大学

Basic Information

Major Professional Backgrounds

• 2026/04/01, Hiroshima University, Graduate School of Advanced Science and Engineering, Associate Professor
• 2017/04/01, 2026/03/31, Shimane University, Faculty of Education, Associate Professor
• 2014/04/01, 2017/03/31, Shimane University, Faculty of Education, Lecturer
• 2009/10/01, 2014/03/31, Shimane University, Faculty of Education, Assistant Professor

Educational Backgrounds

• University of Tsukuba, Graduate School of Pure and Applied Sciences, Department of Materials Science, Japan, 2007/04/01, 2009/09/31

Academic Degrees

• University of Tsukuba
• University of Tsukuba

Affiliated Academic Societies

• The Dielectric Society of Japan, 2020/02
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• The Physical Society of Japan, 2005/02
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• The Japan Society of Applied Physics, 2006/06
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• The Spectroscopical Society of Japan, 2019/10
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Educational Activity

Course in Charge

1. 2026, Undergraduate Education, First Semester, Laboratory in PhysicsI
2. 2026, Undergraduate Education, Second Semester, Laboratory in PhysicsII
3. 2026, Undergraduate Education, Second Semester, Special Study for Graduation B
4. 2026, Graduate Education (Master's Program) , 3Term, Materials Structure Physics
5. 2026, Graduate Education (Master's Program) , First Semester, Exercise in Physics I
6. 2026, Graduate Education (Master's Program) , Second Semester, Exercise in Physics II
7. 2026, Graduate Education (Master's Program) , First Semester, Special Exsecise in Physics A
8. 2026, Graduate Education (Master's Program) , Second Semester, Special Exsecise in Physics B
9. 2026, Graduate Education (Master's Program) , Year, Special Research in Physics

Research Activities

Academic Papers

1. Development of a time-resolved Raman spectroscopy system synchronized with a portable pulsed magnet, JAPANESE JOURNAL OF APPLIED PHYSICS, 65(15), 20260826
   Link to Paper Search Results by DOI
2. Nondestructive visualization of a 1 μm-sized single grain inside a 0.3 mm-thick polycrystalline barium titanate, JAPANESE JOURNAL OF APPLIED PHYSICS, 65(15), 20260826
   Link to Paper Search Results by DOI
3. Structural heterogeneity and diffuse structural evolution in ground (Bi0.5Na0.5)TiO3-BaTiO3 ceramics revealed by synchrotron radiation X-ray diffraction, JAPANESE JOURNAL OF APPLIED PHYSICS, 65(15), 20260826
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4. Ultrahigh-efficiency capacitive energy storage via A-site modulation in high-entropy relaxor ferroelectric ceramics, Ceramics International, 52(14), 25461-25470, 20260601
5. Excellent capacitive energy storage in bismuth ferrite-based multilayer ceramic, Journal of the European Ceramic Society, 45(16), 20251201
6. Optimized capacitive energy storage in ternary BiFeO3-BaTiO3–NaNbO3multilayer ferroelectric ceramics, Ceramics International, 51(26PC), 51399-51409, 20251101
7. Strain gradient across the heteroepitaxial interface in a BaTiO3/KNbO3 core-shell nanocomposite particle revealed by synchrotron radiation X-ray diffraction, Japanese Journal of Applied Physics Part 1 Regular Papers and Short Notes and Review Papers, 64(8), 20250801
8. Improvement of energy storage properties of Bi0.5 Na0.5TiO3 ceramics by doping La0.9Bi0.1Ni0.67Ta0.33O3, Ceramics International, 51(16), 22247-22254, 20250701
9. Preparation and investigation of K0.5Na0.5NbO3-Bi(Sr0.5Hf0.5)O3 transparent energy storage ceramic, Journal of Power Sources, 640, 20250601
10. Synthesis of W-doped VO2 nanoparticles via an aqueous ammonia solution route using WO3 and V2O5 powders and fabrication of thermochromic smart-window composites, Journal of the Korean Ceramic Society, 62(3), 567-572, 20250501
11. Synthesis of Ba(Zr,Ti)2O5 particles using Zr/Ti-HPA with complexing of Ti-IPA and Zr using ZrOCl2, Journal of the Australian Ceramic Society, 60(4), 1233-1236, 20240901
12. Two types of cubic components coexisting in the paraelectric phase of relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 revealed by synchrotron radiation X-ray diffraction, Japanese Journal of Applied Physics Part 1 Regular Papers and Short Notes and Review Papers, 63(8), 20240801
13. Energy storage performance of lead-free Ba0.7Sr0.3TiO3 ceramics with doping Bi(Mg0.5Ti0.5)O3, Materials Science in Semiconductor Processing, 172, 20240315
14. Polarization behavior in a compositionally graded relaxor–ferroelectric crystal visualized by angle-resolved polarized Raman mapping, Communications Physics, 6(1), 20231201
15. Temperature-gradient investigation of phase transitions in ferroelectrics using cooling and heating stage, Japanese Journal of Applied Physics, 62(10), 20231101
16. Lattice strain visualization inside a 400 nm single grain of BaTiO3in polycrystalline ceramics by Bragg coherent X-ray diffraction imaging, Japanese Journal of Applied Physics, 62(SM), 20231101
17. Improvement of dielectric and ferroelectric properties by laser sintering of pulsed EPD BaTiO3 films, Ceramics International, 49(8), 12745-12749, 20230415
18. The ferroelectric phase transition in a 500 nm sized single particle of BaTiO3 tracked by coherent X-ray diffraction, Japanese Journal of Applied Physics, 61(SN), 20221101
19. Morphotropic phase boundaries of (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3probed by Raman spectroscopy at high temperature, Japanese Journal of Applied Physics, 60(SF), 20211101
20. Lowering BaTi2O5 Curie temperature by Sr facile hydrothermal ion-exchange while retaining the original particle morphology, Materials Chemistry and Physics, 272, 20211101
21. Synthesis of Sr substituted BaTiO3 nanoparticles by hydrothermal treatments with maintaining the source material form and particle size, Journal of the Ceramic Society of Japan, 129(3), 143-146, 20210301
22. Raman scattering spectroscopy for solid-phase and metal-induced crystallization of extremely thin germanium films on glass, Japanese Journal of Applied Physics, 60(3), 20210301
23. Order-disorder nature and elastic anomaly of successive phase transition of (K0.5Na0.5)NbO3 proved by broadband Brillouin scattering, Ferroelectrics, 586(1), 2-9, 20210101
24. Local linear coupling between polarization and strain in KF-substituted barium titanate crystals probed by brillouin scattering and dielectric properties, Journal of the Physical Society of Japan, 89(12), 20201215
25. Synthesis of ferroelectric BaTi2O5 nanoparticles via modifying peroxopolytitanic acid solution, Ceramics International, 46(14), 23232-23235, 20201001
26. Multivariate curve resolution for angle-resolved polarized Raman spectroscopy of ferroelectric crystals, Japanese Journal of Applied Physics, 59, 20200701
27. T* of Relaxor Ferroelectric (1 − x) Pb(Zn1/3Nb2/3)O3-xPbTiO3 Single Crystals Revisited Using Brillouin Spectroscopy, Physica Status Solidi A Applications and Materials Science, 217(12), 20200601
28. Brillouin scattering studies of ordered Pb(Sc1/2Nb1/2)O3 crystal with vacancies, Ferroelectrics, 556(1), 44-50, 20200217
29. Electron diffraction study of crystal structures of (Sr1-xBax)2Nb2 O7, Physical Review Materials, 3(4), 20190412
30. Vibrational Dynamics of Ferroelectric K(Ta1-xNbx)O3 Studied by Inelastic Light Scattering, Ferroelectrics, 538(1), 96-104, 20190102
31. Angle-resolved polarized Raman scattering on relaxor ferroelectrics with intermediate random fields, Japanese Journal of Applied Physics, 57(11), 20181101
32. Polarization rotation associated with phonon dynamics in monoclinic C phase near morphotropic phase boundary studied by diffuse and inelastic X-ray scattering from a Ti-composition-gradient Pb[(Mg 1 /3 Nb 2 /3 ) 1– x Ti x ]O 3 single crystal, Ferroelectrics, 532(1), 100-110, 20180818
33. Effect of B -site randomness on the antiferroelectric/relaxor nature of the ground state: Diffuse and inelastic x-ray scattering study of Pb(In1/2Nb1/2) O3, Physical Review B, 98(5), 20180813
34. Ferroelectric phase transition of Li-doped KTa1-xNbxO3 single crystals with weak random fields: Inelastic light scattering study, Journal of Alloys and Compounds, 735, 1063-1070, 20180225
35. Raman scattering study of the ferroelectric phase transition in BaT i2 O5, Physical Review B, 97(2), 20180131
36. Relation between Fractal Inhomogeneity and In/Nb-Arrangement in Pb(In1/2Nb1/2)O3, Scientific Reports, 7(1), 20171201
37. Inelastic light scattering of ferroelectric Sr2(Nb1- xTax)2O7 crystals at high temperatures, Ferroelectrics, 512(1), 20-28, 20170519
38. Single crystal growth of β-Tb2(MoO4)3 and its evaluation, Ferroelectrics, 511(1), 82-87, 20170426
39. Role of polar nanoregions with weak random fields in Pb-based perovskite ferroelectrics, Scientific Reports, 7, 20170316
40. The role of polar-nanoregions in KTa1-xNbxO3 single crystals studied by Raman scattering, Ferroelectrics, 503(1), 85-93, 20161020
41. Fano resonance of Li-doped KTa1-xNbxO3 single crystals studied by Raman scattering, Scientific Reports, 6, 20160406
42. 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, Journal of Applied Physics, 119(9), 20160307
43. Negative correlation between electrical response and domain size in a Ti-composition-gradient Pb[(Mg1/3Nb2/3)1-xTix]O3 crystal near the morphotropic phase boundary, Physical Review B Condensed Matter and Materials Physics, 92(17), 20151130
44. Dielectric Properties and Phase Diagram of (Sr1-xBax)2Nb2O7 Single Crystals, Ferroelectrics, 485(1), 73-79, 20150826
45. Influence of KF substitution on the ferroelectric phase transition of lead titanate single crystals studied by Brillouin light scattering, Journal of Advanced Dielectrics, 5(2), 20150601
46. Influence of KF substitution on electric field-temperature phase diagram in BaTiO3, Japanese Journal of Applied Physics, 53(9), 20141001
47. Relaxor-like dynamics of ferroelectric K(Ta1-xNb x)O3 crystals probed by inelastic light scattering, Journal of Applied Physics, 116(7), 20140821
48. Relaxor behavior on phase transition of (Sr0.68Ba0.32)2Nb2O7 Single Crystals, Journal of the Physical Society of Japan, 83(7), 20140715
49. Preparation and ferroelectric properties of MnO2 doped BaTi 2O5 ceramics by spark plasma sintering from the solid-state-calcined powder, Journal of Materials Science Materials in Electronics, 25(3), 1280-1283, 20140301
50. Correlation between a dielectric anomaly and a phase transition of sintered phosphorus doped WO3 ceramics, Journal of the Ceramic Society of Japan, 122(1421), 25-28, 20140101
51. Crossover from diffuse to sharp phase transition by electric field in 0.955Pb(Zn1/3Nb2/3)O3-0.045PbTiO3, Iop Conference Series Materials Science and Engineering, 54(1), 20140101
52. Effect of fabrication routes on the properties of Mn-doped BaTi 2O5 ceramics, Japanese Journal of Applied Physics, 53(5 SPEC. ISSUE 1), 20140101
53. Dielectric properties of spark plasma sintered BaTi2O 5 ceramics prepared through sol-gel process, Functional Materials Letters, 7(4), 20140101
54. Effect of spark plasma sintering temperature on the phase equilibria and dielectric properties of BaTi2O5 ceramics, Journal of Materials Science, 49(22), 7908-7914, 20140101
55. Development of nanoscale polarization fluctuations in relaxor-based (1-x)Pb(Zn1/3Nb2/3)O3-xPbTiO3 ferroelectrics studied by Brillouin scattering, Physical Review B Condensed Matter and Materials Physics, 87(1), 20130102
56. Large acoustic thermal hysteresis in relaxor ferroelectric Pb(Zn 1/3Nb2/3)O3-PbTiO3, APL Materials, 1(3), 20130101
57. Role of dynamic polar nanoregions in heterovalent perovskite relaxor: Inelastic light scattering study of ferroelectric Ti rich Pb(Zn 1/3Nb2/3)O3-PbTiO3, Journal of Applied Physics, 112(11), 20121201
58. Thickness dependence of extrinsic dielectric response in reduced ni-doped KTAO 3, Japanese Journal of Applied Physics, 51(9 PART 2), 20120901
59. Comparison of acoustic properties between ferroelectric BaTiO 3 and PbTiO 3 single crystals, Ferroelectrics, 420(1), 66-70, 20111201
60. Inelastic light scattering of divalent ions (Ca2+, Sr2+, and Ba2+) substituted (Na1/2Bi1/2)TiO3 single crystals, Journal of the Korean Physical Society, 59(31), 2471-2474, 20110915
61. Synthesis and dielectric properties of Mn-Doped BaTi2O 5 ceramics yukikuni akishige, Japanese Journal of Applied Physics, 50(9 PART 3), 20110901
62. Dielectric effect induced by the barrier layers in Ni-doped KTaO 3, Applied Physics Letters, 99(8), 20110822
63. Ar-annealing effects on TC in KF-substituted barium titanate, Ferroelectrics, 414(1), 201-205, 20110729
64. Dynamical properties of protonic conductor K3H(SeO 4)2, Ferroelectrics, 416(1), 101-107, 20110729
65. Raman and brillouin scattering study of lead-free ferroelectric (1-X)Na0.5 Bi0.5)TiO3-xBaTiO3 single crystals, Ferroelectrics, 412(1), 52-58, 20110512
66. Broadband gigahertz dynamics of relaxor ferroelectric Pb(Sc 1/2Nb1/2)O3-xPbTiO3 single crystal probed by Brillouin scattering, Journal of Applied Physics, 109(8), 20110415
67. Marked increase in Curie temperature upon annealing of ferroelectric KF-substituted barium titanate, Scripta Materialia, 64(3), 268-271, 20110201
68. Micro-brillouin scattering of relaxor ferroelectrics with perovskite structure, Ferroelectrics, 405(1), 32-38, 20101201
69. Broadband micro-Brillouin scattering study of 0.7Pb(Sc1/2Nb 1/2)O3-0.3PbTiO3 crystals, Proceedings of the 2010 IEEE International Symposium on the Applications of Ferroelectrics Isaf 2010 Co Located with the 10th European Conference on the Applications of Polar Dielectrics Ecapd 2010, 20101201
70. Depolarization temperatures and piezoelectric properties of (Bi 0.5Na0.5)TiO3 ceramics and single crystal, Ferroelectrics, 404(1), 162-166, 20101201
71. Elastic anomalies and diffuse phase transitions of (1-x)(Na 0.5Bi0.5)TiO3-xBaTiO3 single crystals studied by brillouin scattering spectroscopy, Ferroelectrics, 405(1), 62-66, 20101201
72. Interpretation of Tm and T* in relaxor ferroelectric 0.93Pb(Zn1/3Nb2/3)O3-0. 07PbTiO3, IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, 57(10), 2159-2164, 20101001
73. Crossover in the mechanism of ferroelectric phase transition of Pb[(Mg 1/3Nb2/3)1-xTix]O3 single crystals studied by Brillouin light scattering, Physical Review B Condensed Matter and Materials Physics, 82(10), 20100916
74. Gigahertz range relaxation in relaxor ferroelectric Sr 0.75Ba0.25Nb2O6, Japanese Journal of Applied Physics, 49(9 PART 2), 20100901
75. Synthesis and electrical properties of KF-doped BaTiO3 ceramics, Japanese Journal of Applied Physics, 49(9 PART 2), 20100901
76. Dielectric and piezoelectric properties of 10% KF-doped BaTiO3 ceramics, Japanese Journal of Applied Physics, 49(8 PART 1), 20100801
77. Acoustic phonons and a central mode in the protonic conductor K3 H (SeO4) 2, Physical Review B Condensed Matter and Materials Physics, 81(1), 20100112
78. Microstructure and phase transition of MnO2-doped bismuth layered-structure ferroelectrics, Japanese Journal of Applied Physics, 48(9 Part 2), 09-K0105, 20091201
79. Enhanced polarization fluctuation in KF-substituted BaTiO3 single crystals, Physical Review B Condensed Matter and Materials Physics, 80(1), 20090806
80. Anomalous behavior of acoustic phonon and central peak in Pb [(In 1/2Nb1/2)0.65Ti0.35] O3 single crystal, Journal of Applied Physics, 105(1), 20090709
81. Successive phase transitions of ferroelectric Bi36la 0.4Ti3O12 crystals studied by using brillouin scattering, Journal of the Korean Physical Society, 55(2 PART 1), 908-911, 20090101
82. Aging of dielectric properties in Na0.5Bi0.5TiO 3 ceramics, Ferroelectrics, 376(1 PART 2), 134-139, 20081201
83. Broadband light scattering of two relaxation processes in relaxor ferroelectric 0.93Pb (Zn1/3Nb2/3)O3-0. 07PbTiO3 single crystals, Physical Review B Condensed Matter and Materials Physics, 78(14), 20081017
84. Brillouin scattering studies of dynamics of polar nanoregions in Pb[(In1/2Nb1/2)0.65Ti0.35]O 3 single crystals, Japanese Journal of Applied Physics, 47(9 PART 2), 7740-7744, 20080919
85. Dynamical properties of polar nanoregions of relaxor ferroelectric Pb(Ni1/3Nb2/3)O3-0.29PbTiO3, Journal of the Physical Society of Japan, 77(3), 20080301
86. Raman scattering study of Ca-modified lead titanate, IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, 54(12), 2599-2602, 20071201
87. Dynamical properties of the relaxor ferroelectric 0.71Pb(Ni 1/3Nb2/3)O3-0.29PbTiO3 probed by brillouin and raman scattering, IEEE Transactions on Ultrasonics Ferroelectrics and Frequency Control, 54(12), 2632-2635, 20071201
88. Raman scattering study of Ca modified lead titanate, Ferroelectrics, 355(1 PART 1), 66-70, 20071201
89. Raman scattering study of Ca modified lead titanate, IEEE International Symposium on Applications of Ferroelectrics, 289-290, 20071201
90. The aging effect in (Bi0.5Na0.5)TiO3 family with point defects, IEEE International Symposium on Applications of Ferroelectrics, 305-307, 20071201
91. Dynamical properties of the relaxor ferroelectric 0.7 1Pb(Ni 1/3Nb2/3)O3-O.29PbTiO3 probed by Brillouin and Raman scattering, IEEE International Symposium on Applications of Ferroelectrics, 285-288, 20071201
92. Characterization of dielectric property of nanosized (Pb 0.7Sr0.3)TiO3 powders studied by Raman scattering, Japanese Journal of Applied Physics Part 1 Regular Papers and Short Notes and Review Papers, 46(10 B), 7148-7150, 20071022
93. Broadband inelastic light scattering study on relaxor ferroelectrics, Japanese Journal of Applied Physics Part 1 Regular Papers and Short Notes and Review Papers, 46(10 B), 7151-7154, 20071022
94. High-resolution Brillouin spectroscopy with angular dispersion-type Fabry-Perot interferometer and its application to a quartz crystal, Review of Scientific Instruments, 78(7), 20070808
95. Investigation on dielectric and piezoelectric properties of (1-x)(Na 0.5K0.5)NbO3-xSrTiO3 ceramics, Ferroelectrics, 348, 106-112, 20070802
96. Piezoelectric (Na0.5K0.5)NbO3-SrTiO 3 ceramics in the tetragonal-orthorhombic phase boundary studied by Raman spectroscopy, Ferroelectrics, 347, 55-59, 20070802
97. Diffuse phase transition of 0.8Pb(Ni1/3Nb2/3)O 3-0.2PbTiO3 single crystals studied by micro-brillouin scattering, Ferroelectrics, 346, 37-42, 20070802
98. Brillouin scattering study of glass-forming propylene glycol, Materials Science and Engineering A, 442(1-2 SPEC. ISS.), 379-382, 20061220
99. Broadband inelastic light scattering of a relaxor ferroelectric 0.71Pb (Ni1/3Nb2/3)O3-0.29PbTiO3, Applied Physics Letters, 89(21), 20061215
100. Brillouin and Raman scattering studies on the relaxor ferroelectric 0.71Pb(Nl1/3Nb2/3)O3-0.29PbTiO3 single crystal, Materials Research Society Symposium Proceedings, 966, 96-101, 20061201