KIM SANGWOOKSANGWOOK KIM

Last Updated :2024/06/12

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109
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. 2024年, 学部専門, セメスター(前期), 物理学実験I
  2. 2024年, 学部専門, セメスター(後期), 物理学実験II
  3. 2024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. 2024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. 2024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. 2024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. Gravity-induced structural deformation for enhanced ferroelectric performance in lead-free piezoelectric ceramics, SCRIPTA MATERIALIA, 244巻, 20240415
  2. 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
  3. 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
  4. 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
  5. 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
  6. Effect of thermal annealing on crystal structures and electrical properties in BaTiO3 ceramics, Journal of Applied Physics, 124巻, pp. 034102, 20180719
  7. 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
  8. 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
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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
  14. 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
  15. 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
  16. Piezoelectricity in perovskite-type pseudo-cubic ferroelectrics by partial ordering of off-centered cations, Communications materials, 1巻, pp. 71, 20201006
  17. Piezoelectricity in perovskite-type pseudo-cubic ferroelectrics by partial ordering of off-centered cations, COMMUNICATIONS MATERIALS, 1巻, 1号, 20201006
  18. 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
  19. 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
  20. 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
  21. 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
  22. Material softening by cation off-centering in Bi-based lead-free piezoelectric ceramics, JAPANESE JOURNAL OF APPLIED PHYSICS, 60巻, SF号, 20211101
  23. 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
  24. 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
  25. Preparation and investigation of hexagonal-tetragonal BaTiO3 powders, Journal of the Ceramic Society of Japan, 129巻, 2号, pp. 91-96, 20210201
  26. 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
  27. 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
  28. ★, Lead-Free BiFeO3-Based Piezoelectrics: A Review of Controversial Issues and Current Research State, Materials, 15巻, pp. 4388, 20220621
  29. 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
  30. 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
  31. Local structure analysis of BiFeO3-BaTiO3 solid solutions, Japanese Journal of Applied Physics, 61巻, pp. SN1022, 20221101
  32. 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
  33. ★, Piezoelectric Actuation Mechanism Involving Extrinsic Nanodomain Dynamics in Lead-Free Piezoelectrics, Advanced Materials, 35巻, pp. 2208717, 20230209