KIM SANGWOOKSANGWOOK KIM

Last Updated :2026/08/05

所属・職名
大学院先進理工系科学研究科 助教
メールアドレス
sangwookhiroshima-u.ac.jp
その他連絡先
〒739-8526 東広島市 鏡山 1-3-1 理学A棟112
TEL:+81-82-424-7499 FAX:+81-82-424-7398
自己紹介
I am an assistant professor of 'Graduate School of Advanced Science and Engineering' in Hiroshima University. My major is the condensed matter physics, applied physics, and material science. My main research field is the development of electroceramics and crystal structure analysis with synchrotron radiation. Especially, I am interested in the study of the relationship between crystal structure and electrical properties in piezoelectric, ferroelectric, and dielectric. Currently, I am working as a young leading scientist in Applied physics and also trying to contribute to grow up young scientists in the field of applied physics and a related material science.

基本情報

学位

  • MS(Physics) (国立昌原大学)
  • 博士(工学) (山梨大学)

教育担当

  • 【学士課程】 理学部 : 物理学科 : 物理学プログラム
  • 【博士課程前期】 先進理工系科学研究科 : 先進理工系科学専攻 : 物理学プログラム
  • 【博士課程後期】 先進理工系科学研究科 : 先進理工系科学専攻 : 物理学プログラム

研究分野

  • 工学 / 材料工学 / 無機材料・物性
  • 総合理工 / 応用物理学 / 応用物性
  • 数物系科学 / 物理学 / 物性Ⅰ

教育活動

授業担当

  1. 2026年, 学部専門, セメスター(前期), 物理学実験I
  2. 2026年, 学部専門, セメスター(後期), 物理学実験II
  3. 2026年, 修士課程・博士課程前期, セメスター(前期), 物理学演習Ⅰ
  4. 2026年, 修士課程・博士課程前期, セメスター(後期), 物理学演習Ⅱ
  5. 2026年, 修士課程・博士課程前期, セメスター(前期), 物理学特別演習A
  6. 2026年, 修士課程・博士課程前期, セメスター(後期), 物理学特別演習B

研究活動

学術論文(★は代表的な論文)

  1. A Unified Framework for Grain-Size-Mediated Piezoelectric and Electromechanical Properties of Barium Titanate Ceramics, INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY, 23巻, 3号, 20260609
  2. Curie temperature difference in (Bi0.5Na0.5)TiO3-BaTiO3 ceramics between bulk and powder states, CERAMICS INTERNATIONAL, 52巻, 14号, pp. 25152-25155, 20260520
  3. Flexoelectricity enables piezoelectric single crystals to be self-poled, NPJ FLEXIBLE ELECTRONICS, 10巻, 1号, pp. 71, 20260409
  4. Effect of grain orientation on depolarization and phase transition temperatures of 0.85(Bi0.5Na0.5)TiO3-0.15BaTiO3 ceramics, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 46巻, 10号, pp. 118289/1-118289/7, 20260306
  5. 擬立方晶強誘電体BiFeO3-BaTiO3における極性構造, 顕微鏡, 60巻, 3号, pp. 130-133, 20251230
  6. Ferroelectricity restoration via thermally driven recovery of surface damage layers in BiFeO3-based lead-free ceramics, JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 109巻, 1号, 20251124
  7. A dispersed buffer phase enables mitigated stress toward stable 4.6 V Graphite||NCM811 batteries, Materials Today, 88巻, pp. 382-392, 20250814
  8. 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, 64巻, 8号, 20250801
  9. Role of the third composition and its A-site cation off-centering mechanism in ternary BiFeO3-BaTiO3-based piezoelectric ceramics, SCRIPTA MATERIALIA, 262巻, 20250601
  10. Unexpected Planar Gliding and Microcracking Induced by Neutron Irradiation in SingleCrystalline LiCoO2 Cathodes, ACS Energy Letters, 10巻, pp. 2701-2709, 20250511
  11. ★, 擬立方晶ビスマス系セラミックスの強誘電性と圧電性の発現機構, 日本物理学会誌, 80巻, 5号, pp. 257-262, 20250505
  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, 63巻, 8号, 20240801
  13. 鉛を含まない圧電材料の新展開:構造乱れをもつ擬立方晶セラミックスが示す優れた強誘電性と圧電性, FCレポート, 42巻, 2号, pp. 56-61, 20240420
  14. Gravity-induced structural deformation for enhanced ferroelectric performance in lead-free piezoelectric ceramics, SCRIPTA MATERIALIA, 244巻, 20240415
  15. Lattice strain visualization inside a 400 nm single grain of BaTiO3 in polycrystalline ceramics by Bragg coherent X-ray diffraction imaging, JAPANESE JOURNAL OF APPLIED PHYSICS, 62巻, SM号, 20231101
  16. Crystal structure of heteroepitaxial BaTiO3-KNbO3 core-shell nanocomposite particles studied by synchrotron radiation X-ray diffraction, JAPANESE JOURNAL OF APPLIED PHYSICS, 62巻, SM号, 20231101
  17. Stability of ferroelectric phase and structural characteristics in oriented PbTiO3 ceramic coating formed by aerosol deposition method, APPLIED PHYSICS LETTERS, 122巻, 14号, 20230403
  18. ★, Piezoelectric Actuation Mechanism Involving Extrinsic Nanodomain Dynamics in Lead-Free Piezoelectrics, Advanced Materials, 35巻, pp. 2208717, 20230209
  19. Composition dependence of structural and piezoelectric properties in Bi(Mg0.5Ti0.5)O-3-modified BaTiO3-BiFeO3 ceramics, JAPANESE JOURNAL OF APPLIED PHYSICS, 61巻, SN号, 20221101
  20. 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巻, pp. SN1008, 20221101
  21. Composition dependence of structural and piezoelectric properties in Bi (Mg0.5Ti0.5)O3-modified BaTiO3-BiFeO3 ceramics, Japanese Journal of Applied Physics, 61巻, pp. SN1033, 20221101
  22. Local structure analysis of BiFeO3-BaTiO3 solid solutions, Japanese Journal of Applied Physics, 61巻, pp. SN1022, 20221101
  23. Development of superparaelectric BaTiO3 system ceramics through heterovalent Mn-Nb co-doping for DC-bias free dielectrics, Japanese Journal of Applied Physics, 61巻, pp. SN1023, 20221101
  24. ★, Lead-Free BiFeO3-Based Piezoelectrics: A Review of Controversial Issues and Current Research State, Materials, 15巻, pp. 4388, 20220621
  25. Mn-Nb co-doping in barium titanate ceramics by different solid-state reaction routes for temperature stable and DC-bias free dielectrics, CERAMICS INTERNATIONAL, 48巻, 2号, pp. 2154-2160, 20220115
  26. Synthesis of Pb(Zr, Ti)O-3 fine ceramic powder at room temperature by dry mechanochemical solid-state reaction evaluated using synchrotron radiation X-ray diffraction, JAPANESE JOURNAL OF APPLIED PHYSICS, 60巻, SF号, 20211101
  27. Material softening by cation off-centering in Bi-based lead-free piezoelectric ceramics, JAPANESE JOURNAL OF APPLIED PHYSICS, 60巻, SF号, 20211101
  28. A-site cation off-centering contribution on ferroelectricity and piezoelectricity in pseudo-cubic perovskite structure of Bi-based lead-free piezoelectrics, Scripta Materialia, 205巻, pp. 114176, 20210815
  29. Variation of leakage current conduction mechanism by heat treatment in Bi-based lead-free piezoelectric ceramics, Journal of Applied Physics, 129巻, pp. 094102, 20210307
  30. Preparation and investigation of hexagonal-tetragonal BaTiO3 powders, Journal of the Ceramic Society of Japan, 129巻, 2号, pp. 91-96, 20210201
  31. Visualization of spontaneous electronic polarization in Pb ion of ferroelectric PbTiO3 by synchrotron-radiation x-ray diffraction, APPLIED PHYSICS LETTERS, 117巻, 25号, 20201221
  32. Piezoelectricity in perovskite-type pseudo-cubic ferroelectrics by partial ordering of off-centered cations, Communications materials, 1巻, pp. 71, 20201006
  33. Piezoelectricity in perovskite-type pseudo-cubic ferroelectrics by partial ordering of off-centered cations, COMMUNICATIONS MATERIALS, 1巻, 1号, 20201006
  34. Charge order of bismuth ions and nature of chemical bonds in double perovskite- type oxide BaBiO3 visualized by synchrotron radiation X-ray diffraction, Japanese Journal of Applied Physics, 59巻, pp. 095505, 20200904
  35. Electric-field-induced structural changes for cubic system of lead-free and lead-based perovskite-type oxides, Japanese Journal of Applied Physics, 59巻, pp. SPPA05, 20200805
  36. Fabrication of <111>-oriented BaTiO3 ceramics by high magnetic field electrophoretic deposition using hexagonal-tetragonal co-existing BaTiO3 powder, Journal of the Ceramic Society of Japan, 128巻, 8号, pp. 469-474, 20200801
  37. Influence of grain size effect and Ba/Ti ratios on dielectric, ferroelectric, and piezoelectric properties of BaTiO3 ceramics, Japanese Journal of Applied Physics, 58巻, pp. SLLC05, 20190904
  38. Thermal annealing induced recovery of damaged surface layer for enhanced ferroelectricity in Bi-based ceramics, Japanese Journal of Applied Physics, 58巻, pp. SLLD04, 20190821
  39. Optimization of preparation conditions of highly textured piezoelectric (Bi0.5K0.5)TiO3 ceramics, Journal of the Ceramic Society of Japan, 127巻, 6号, pp. 362-368, 20190601
  40. Effect of A-site off-stoichiometry on ferroelectric and piezoelectric properties of BaTiO3­Bi(Mg1/2Ti1/2)O3­BiFeO3 ceramics, Journal of the Ceramic Society of Japan, 127巻, 6号, pp. 369-373, 20190601
  41. Effects of AC- and DC-bias field poling on piezoelectric properties of Bi-based ceramics, Journal of the Ceramic Society of Japan, 127巻, 6号, pp. 353-356, 20190601
  42. Influence of quenching temperature on piezoelectric and ferroelectrics T properties in BaTiO3-Bi(Mg1/2Ti1/2)O3-BiFeO3 ceramics, Ceramics International, 44巻, pp. S199-S202, 20180811
  43. Effect of thermal annealing on crystal structures and electrical properties in BaTiO3 ceramics, Journal of Applied Physics, 124巻, pp. 034102, 20180719
  44. Effect of ball-milling time and surfactant content for fabrication of 0.85(Bi0.5Na0.5)TiO3:0.15BaTiO3 green ceramics by electrophoretic deposition, Journal of the Ceramic Society of Japan, 126巻, 7号, pp. 542-546, 20180701
  45. Grain-size dependence of piezoelectric properties in thermally annealed BaTiO3 ceramics, Journal of the Ceramic Society of Japan, 126巻, 7号, pp. 536-541, 20180701
  46. In-situ electric field induced lattice strain response observation in BiFeO3­-BaTiO3 lead-free piezoelectric ceramics, Journal of the Ceramic Society of Japan, 126巻, 5号, pp. 316-320, 20180501
  47. A dispersed buffer phase enables mitigated stress toward stable 4.6 V Graphite||NCM811 batteries, MATERIALS TODAY, 88巻, pp. 382-392, 202509
  48. Multiprobe analyses on nucleation and evolution of nanocrystallization process in a high saturation magnetization soft magnetic Fe-Si-B-P-Cu-C alloy, JOURNAL OF MATERIALS SCIENCE, 60巻, 8号, pp. 3988-3998, 202502
  49. Fabrication of (Bi0.5K0.5)TiO3 modified BaTiO3-Bi(Mg0.5Ti0.5)O3-BiFeO3 piezoelectric ceramics, JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 41巻, 7号, pp. 4108-4115, 202107

受賞

  1. 2025年11月27日, ICAE Best Poster Award, The Korean Institute of Electrical and Electronic Material Engineers, Investigating the Influence of Quenching Rate on Ferroelectricity in BiFeO3-based Ceramics via Electron Density Distribution Visualization
  2. 2025年11月27日, ICAE Award, The Korean Institute of Electrical and Electronic Material Engineers, Thermal-Driven Surface Damage Layer Recovery and Polarization Restoration in BiFeO3-based Lead-freee Ceramics
  3. 2025年03月08日, 在日韓国科学技術者協会 「第 16回合同分科会」 学術優秀賞, 在日韓国科学技術者協会
  4. 2024年03月02日, 在日韓国科学技術者協会 「第 15回合同分科会」 学術優秀賞, 在日韓国科学技術者協会
  5. 2023年11月03日, The 7th International Conference on Advanced Electromaterials(ICAE 2023) BEST POSTER AWARD, The Korean Institute of Electrical and Electronic Material Engineers
  6. 2022年06月28日, IAAM Award, International Association of Advanced Materials SECRETARY GENERAL