Takesada masaki 武貞正樹

… Alternative Names

TAKESADA Masaki 武貞正樹

Takesada Masaki 武貞正樹

武貞正樹タケサダマサキ

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Researcher Number	30311434
Other IDs
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Affiliation (Current)	2025: 北海道大学, 理学研究院, 准教授
Affiliation (based on the past Project Information) *help	2018 – 2024: 北海道大学, 理学研究院, 准教授 2016: 北海道大学, 理学研究院, 准教授 2014 – 2015: 北海道大学, 理学(系)研究科(研究院), 准教授 2009: 北海道大学, 大学院・理学研究科, 講師 2006 – 2009: 北海道大学, 大学院・理学研究院, 講師 … More 2007 – 2008: 北海道大学, 理学(系)研究科, 講師 2006: 北海道大学, 大学院理学研究院, 講師 2004 – 2005: Hokkaido University, Grad. School of Sci., Lec., 大学院・理学研究科, 講師 2002 – 2003: 北海道大学, 電子科学研究所, 助手 2000: (財)神奈川科学技術アカデミー, 光誘起協力現象プロジェクト, 研究員 1999: 財団法人神奈川科学技術アカデミー, 光誘起協力現象プロジェクト, 研究員 Less
Review Section/Research Field	Principal Investigator Condensed matter physics I / 固体物性Ⅰ(光物性・半導体・誘電体) / Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related Except Principal Investigator Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics / Basic Section 26020:Inorganic materials and properties-related / 固体物性Ⅰ(光物性・半導体・誘電体) / Inorganic materials/Physical properties / Condensed matter physics I
Keywords	Principal Investigator チタン酸バリウム / トロイダル強誘電性 / 強誘電性ナノ秩序形成ダイナミクス / 高分解能広帯域光散乱分光 / ナノ秩序形成 / 強誘電性ナノ結晶 / 光誘起相転移 / 光誘起協力現象 / 量子常誘電体 / 強誘電体 … More / 強誘電体性ナノ結晶 / 走査型透過電子顕微鏡 / 広帯域スペクトル / 高分解能広帯域光散乱分光実験 / ハイパーラマン散乱 / チタン酸鉛 / 超臨界水熱合成法 / フラクタル / 強誘電的ナノ秩序化 / photoinduced dielectric susceptibility / photoinduced quantum cooperative phenomenon / bismuth lavered perovskite / soft mode dynamics / vibronic soft mode / inorganic ferroelectrics / quantum paraelectrics / photo induced phase transition / 光誘起超低振動ラマン散乱 / 量子強誘電性 / 量子常誘電性 / ソフトモード / バイブロニック強誘電性 / 電子-格子相互作用 / SrTi^<18>O_3 / 光誘起バイブロニック強誘電性 / 低振動数ラマン散乱 / 量子強誘電体 / ソフトモード完全凍結 / 強誘電性量子協力現象 / Ni-doped KTaO_3 / 低振動数光散乱 / ダイナミクス / 光誘起誘電増大 / 光誘起量子協力現象 / Bi層状ペロフスカイト / ソフトモードダイナミクス / バイブロニックソフトモード / 無機強誘電体 / ブリルアン散乱 / ラマン散乱 / 強誘電性ﾅﾉ結晶 / SHG / トロイダルソフトモード / ハイパーレーリー散乱 / 第二高調波発生 / 第二次高調波発生 / 広帯域光散乱分光 / フラクトン / 自己相似性 / トロイダル秩序 / 同位体効果 / 非平衡物理 / ペロフスカイト型酸化物 / 光誘起ダイナミクス / 量子揺らぎ / ポーラーナノクラスター / 光誘起誘電分散 / メモリー効果 / 放射光 / ペロブスカイト型酸化物 / パーフェクトソフトモード / X線誘起メモリー効果 / ラマン散乱実験 / ブリルアン散乱実験 / LiH_3(SeO_3)_2 / 前駆融解現象 / 強弾性体 / KD_3(SeO_3)_2 / 光誘起構造相転移 / 強弾性ドメイン形成 / 強誘電性ドメイン / ロッシェル塩 … More Except Principal Investigator 強誘電体 / ソフトモード / 量子ゆらぎ / 量子常誘電体 / フェルミ黄金率 / 散乱理論 / ラマン分光 / X線コンプトン散乱 / 陽電子消滅 / フェルミ黄金律 / 光学特性 / ドメインエンジニアリング / バンドエンジニアリング / 第二高調波 / 薄膜 / リラクサー / HfO2 / soft phonon / ferroelectrics / inhomogeneity / quantum paraelectrics / complete freezing / soft mode / coherent / quantum fluctuations / FMR / STO18 / STO / 同位元素誘起強誘電性 / 相転移ダイナミクス / ソフトフォノン / 不均一性 / 完全凍結 / コヒーレント / 単結晶 / 電子・電気材料 / 誘電体 / ブリルアン散乱 / ブルリアン散乱 / 広帯域分光法 / 完全ソフト化 / フォノン / 時間-振動数領域広帯域分光法 / 量子強誘電体 / 8)ERECクライオスタット / 同位元素置換相転移 / ミリケルビン領域 / 時間-振動数結合広帯域分光法 / 極低温光散乱分光 Less

Study of the correction term for the Fermi golden rule using multi-methods
- Principal Investigator
  
  陣内修
- Project Period (FY)
  2021 – 2024
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 15020:Experimental studies related to particle-, nuclear-, cosmic ray and astro-physics
- Research Institution
  Institute of Science Tokyo
Exploration of novel physical properties of HfO2-based ferroelectrics by controlling polarization fluctuations
- Principal Investigator
  
  Asanuma Shutaro
- Project Period (FY)
  2020 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 26020:Inorganic materials and properties-related
- Research Institution
  National Institute of Advanced Industrial Science and Technology
Ferroelectric nano-ordering and fractal nature in ferroelectric nanocrystalsPrincipal Investigator
- Principal Investigator
  
  TAKESADA Masaki
- Project Period (FY)
  2018 – 2020
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 13020:Semiconductors, optical properties of condensed matter and atomic physics-related
- Research Institution
  Hokkaido University
Toroidal ferroelectricity and photoresponse in ferroelectric nanocrystalsPrincipal Investigator
- Principal Investigator
  
  Takesada Masaki
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Condensed matter physics I
- Research Institution
  Hokkaido University
Study of the Mechanism of Giant Permittivity in Oxygen-Deficient Hexagonal BaTiO_3 Single Crystals
- Principal Investigator
  
  YU Jianding
- Project Period (FY)
  2007 – 2008
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Inorganic materials/Physical properties
- Research Institution
  Japan Aerospace Exploration Agency
Study of the coherent quantum fluctuations competed with formation of the long-range ferroelectric order
- Principal Investigator
  
  TOSHIROU Yagi
- Project Period (FY)
  2005 – 2009
- Research Category
  
  Grant-in-Aid for Scientific Research (S)
- Research Field
  
  Condensed matter physics I
- Research Institution
  Hokkaido University
Photoinduced Vibronic Soft mode Dynamics in Ferroelectric Quantum Cooperative PhenomenaPrincipal Investigator
- Principal Investigator
  
  TAKESADA Masaki
- Project Period (FY)
  2005 – 2007
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Condensed matter physics I
- Research Institution
  Hokkaido University
量子揺らぎにおける非平衡光誘起協力現象の機構解明Principal Investigator
- Principal Investigator
  
  武貞正樹
- Project Period (FY)
  2002 – 2004
- Research Category
  
  Grant-in-Aid for Young Scientists (A)
- Research Field
  
  固体物性Ⅰ(光物性・半導体・誘電体)
- Research Institution
  Hokkaido University
DYNAMICS OF QUANTUM FLUCTUATION STUDIED BY COHERENT PHONON EXCITATION METHOD
- Principal Investigator
  
  YAGI Toshirou
- Project Period (FY)
  2002 – 2004
- Research Category
  
  Grant-in-Aid for Scientific Research (A)
- Research Field
  
  固体物性Ⅰ(光物性・半導体・誘電体)
- Research Institution
  HOKKAIDO UNIVERSITY
誘電体における光誘起構造相転移の動的機構解明Principal Investigator
- Principal Investigator
  
  武貞正樹
- Project Period (FY)
  2000 – 2001
- Research Category
  
  Grant-in-Aid for Encouragement of Young Scientists (A)
- Research Field
  
  固体物性Ⅰ(光物性・半導体・誘電体)
- Research Institution
  Kanagawa Academy of Science and Technology

[Journal Article] Pioneering dielectric materials of Sn-doped Nb0.025Ti0.975O2 ceramics with excellent temperature and humidity stability for advanced ceramic capacitors2024
- Author(s)
  Mingmuang Yasumin、Chanlek Narong、Takesada Masaki、Swatsitang Ekaphan、Thongbai Prasit
- Journal Title
  
  RSC Advances
  
  Volume: 14 Issue: 11 Pages: 7631-7639
- DOI
  10.1039/d3ra08336e
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K20855
[Journal Article] Origins of high-performance giant dielectric properties in TiO2 co-doped with aliovalent ions via broadband dielectric spectroscopy2023
- Author(s)
  Thongyong Nateeporn、Chanlek Narong、Takesada Masaki、Thongbai Prasit
- Journal Title
  
  Results in Physics
  
  Volume: 44 Pages: 106210-106210
- DOI
  10.1016/j.rinp.2023.106210
- Data Source
  KAKENHI-PROJECT-23K20855
[Journal Article] Experimental study and DFT calculations of improved giant dielectric properties of Ni2+/Ta5+ co-doped TiO2 by engineering defects and internal interfaces2022
- Author(s)
  Thongyong Nateeporn、Chanlek Narong、Srepusharawoot Pornjuk、Takesada Masaki、Cann David P.、Thongbai Prasit
- Journal Title
  
  Journal of the European Ceramic Society
  
  Volume: 42 Issue: 12 Pages: 4944-4952
- DOI
  10.1016/j.jeurceramsoc.2022.05.037
- Data Source
  KAKENHI-PROJECT-23K20855
[Journal Article] Giant dielectric properties of Ga3+-Nb5+Co-doped TiO2 ceramics driven by the internal barrier layer capacitor effect2021
- Author(s)
  W. Tuichai, S. Danwittayakul, J. Manyam, N. Chanlek, M. Takesada, P. Thongbai
- Journal Title
  
  MATERIALIA
  
  Volume: 18 Pages: 101175-101175
- DOI
  10.1016/j.mtla.2021.101175
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K20855
[Journal Article] High-Performance Giant Dielectric Properties of Cr3+/Ta5+ Co-Doped TiO2 Ceramics2021
- Author(s)
  Wattana Tuichai, Supamas Danwittayakul, Narong Chanlek, Masaki Takesada, Atip Pengpad, Pornjuk Srepusharawoot, and Prasit Thongbai
- Journal Title
  
  ACS Omega
  
  Volume: 6 Issue: 3 Pages: 1901-1910
- DOI
  10.1021/acsomega.0c04666
- Peer Reviewed / Open Access / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03476
[Journal Article] Giant dielectric behavior of monovalent cation/anion (Li+, F-) co-doped CaCu3Ti4O12 ceramics2020
- Author(s)
  Jutapol JUMPATAM, Narong CHANLEK, Masaki TAKESADA and Prasit THONGBAI
- Journal Title
  
  Journal of the American Ceramic Society
  
  Volume: 103 Issue: 3 Pages: 1871-1880
- DOI
  10.1111/jace.16904
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03476
[Journal Article] Hydrothermal synthesis of perovskite metal oxide nanoparticles in supercritical water2019
- Author(s)
  Yukiya Hakuta, Hiroshi Takashima, and Masaki Takesada
- Journal Title
  
  Ferroelectrics
  
  Volume: 印刷中
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03476
[Journal Article] Hydrothermal synthesis of perovskite metal oxide nanoparticles in supercritical water2019
- Author(s)
  Yukiya HAKUTA, Hiroshi TAKASHIMA and Masaki TAKESADA
- Journal Title
  
  FERROELETRICS
  
  Volume: 539 Issue: 1 Pages: 1-8
- DOI
  10.1080/00150193.2019.1569999
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03476
[Journal Article] Atomic-Scale Observation of Titanium-Ion Shifts in Barium Titanate Nanoparticles: Implications for Ferroelectric Applications2019
- Author(s)
  Yukio SATO, Mai AOKI, Ryo TERANISHI, Kenji KANEKO, Masaki TAKESADA, Hiroki MORIWAKE, Hiroshi TAKASHIMA and Yukiya HAKUTA
- Journal Title
  
  ACS APPLIED NANO MATERIALS
  
  Volume: 2 Issue: 9 Pages: 5761-5768
- DOI
  10.1021/acsanm.9b01221
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03476, KAKENHI-PROJECT-18H01710, KAKENHI-PROJECT-18K18952
[Journal Article] Ferroelectric BaTaO2N Crystals Grown in a BaCN2 Flux2019
- Author(s)
  Akira HOSONO, Yuji MASUBUCHI, Shintaro YASUI, Masaki TAKESADA, Takashi ENDO, Mikio HIGUCHI, Mitsuru ITOH and Shinichi KIKKAWA
- Journal Title
  
  Inorganic Chemistry
  
  Volume: 58 Issue: 24 Pages: 16752-16760
- DOI
  10.1021/acs.inorgchem.9b02917
- NAID
  120006940622
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K03476, KAKENHI-PROJECT-18K19126, KAKENHI-PLANNED-16H06439, KAKENHI-PROJECT-19J10301
[Journal Article] Structural Aspects in A-site Ordered Perovskite CaCu3Ti4O12: Colossal Dielectric Behavior and Ca/Cu Disordering2017
- Author(s)
  T. Hori, M. Takesada and A. Onodera
- Journal Title
  
  Ferroelectrics
  
  Volume: 印刷中
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26400306
[Journal Article] Ferroelectricity in Layered Perovskites as a Model of Ultra-Thin Films2016
- Author(s)
  Masanori Fukunaga, Masaki Takesada, Akira Onodera
- Journal Title
  
  World Journal of Condensed Matter Physics
  
  Volume: 6 Pages: 224-243
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-26400306
[Journal Article] Anomalous Dielectric Behavior in A-site Ordered Perovskite CaCu3Ti4O12 : Effect of A '-site Doping2015
- Author(s)
  N. Hasegawa, M. Sasaki, T. Hattori, H. Satoh, M. Takesada and A. Onodera
- Journal Title
  
  Ferroelectrics
  
  Volume: 485 Issue: 1 Pages: 129-135
- DOI
  10.1080/00150193.2015.1061403
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26400306
[Journal Article] Specific Heat Study of Multiferroic LuFe2O4 Single Crystal2014
- Author(s)
  N. Hasegawa, T. Mitsumura, M. Takesada, A. Onodera, J. Kano, N. Ikeda
- Journal Title
  
  FERROELECTRICS
  
  Volume: 462 Pages: 145-150
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-26400306
[Journal Article] Soft-mode Dynamics in the Ferroelectric Phase Transition of Quantum Paraelectric SrTiO_32009
- Author(s)
  T.Yagi, M.Takesada, H.Taniguchi, M.Itoh
- Journal Title
  
  Ferroelectrics 379
  
  Pages: 168-176
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17104004
[Journal Article] Ultraviolet Photoexcited Soft Mode Dynamics in Quantum Paraelectrics KTaO3 Doped with Nickel2009
- Author(s)
  M. Takesada, H. Nihonmatsu, T. Yagi, A. Onodera, Y. Akishige
- Journal Title
  
  Jpn. J. Appl. Phys 48(Part2Sp.Iss.)
- Data Source
  KAKENHI-PROJECT-17104004
[Journal Article] Soft-mode Dynamics in the Ferro-electric Phase Transition of Quantum Paraelectric SrTiO32009
- Author(s)
  T. Yagi, M. Takesada, H. Taniguchi, M. Itoh
- Journal Title
  
  Ferroelectrics Vol.379
  
  Pages: 168-176
- Data Source
  KAKENHI-PROJECT-17104004
[Journal Article] Photoinduced Cooperative Phenomena in Dielectrics2008
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  The Review of Laser Engineering 36
- NAID
  10021105986
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] "Photoinduced Cooperative Phenomena in Dielectrics"2008
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  The Review of Laser Engineering 36(In press)
- NAID
  10021105986
- Description
  「研究成果報告書概要(和文)」より
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] "Demonstration of Perfect Softening of the Slater-Type Ferroelectric Mode on SrTi^<18>O_3"2007
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  Ferroelectrics 346
  
  Pages: 20-24
- Description
  「研究成果報告書概要(和文)」より
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] High Carrier Mobility Coupled With Quantum Paraelectric Fluctuation2007
- Author(s)
  T. Ishikawa, M. Kurita, S. Koshihara, M. Takesada, M. Itoh
- Journal Title
  
  Ferroelectrics 346
  
  Pages: 10-15
- NAID
  130004661600
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] New Phase Transition in Layered Ferroelectric Pb_2Bi_4Ti_5O_182007
- Author(s)
  S. Mouri, M. Fukunaga, S. Hiramatsu, M. Takesada, H. Satoh, and A. Onodera
- Journal Title
  
  Ferroelectrics 355
  
  Pages: 50-54
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Recent Topics on the Light Scattering Study of Ferroelectrics2007
- Author(s)
  T. YAGI, M. TAKESADA, H. TANIGUTCHI and M. ITOH
- Journal Title
  
  Ferroelectrics 355
  
  Pages: 3-12
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Ferroelectric Phase Transition in Bi-Layered Perovskite Sr_2Bi_4Ti_5O_182007
- Author(s)
  S. Mouri, M. Fukunaga, S. Hiramatsu, M. Takesada and A. Onodera
- Journal Title
  
  Ferroelectrics 346
  
  Pages: 93-96
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] "Light Scattering Study of Ferroelectric Bismuth Layered Perovskite SrBi_2Ta_2O_9"2007
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  Ferroelectrics 355
  
  Pages: 149-153
- Description
  「研究成果報告書概要(和文)」より
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Demonstration of Perfect Softening of the Slater-Type Ferroelectric Mode on SrTi^18O_32007
- Author(s)
  M. Takesada, M. Itoh, A. Onodera, and T. Yagi
- Journal Title
  
  Ferroelectrics 346
  
  Pages: 20-24
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Phase Transition in Bi-Layered Perovskite and a Model of Ultra-Thin Ferroelectric Film2007
- Author(s)
  A. Onodera, S. Mouri, M. Fukunaga, M. Takesada, and H. Yamashita
- Journal Title
  
  Ferroelectrics 346
  
  Pages: 25-31
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Demonstration of Perfect Softening of the Slater-Type Ferroelectric Mode on SrTi^<18>O_32007
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  Ferroelectrics 346
  
  Pages: 20-24
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Light Scattering Study of Phase Transition in Quantum Paraelectric Strontium Titanate2007
- Author(s)
  T. Yagi, M. Takesada, H. Taniguchi and M. Itoh
- Journal Title
  
  J. Korean Phys. Soc. 51
  
  Pages: 798-803
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Light Scattering Study of Ferroelectric Bismuth Layered Perovskite SrBi_2Ta_2O_92007
- Author(s)
  M. Takesada, K. Sutoh, M. Fukunaga and A. Onodera
- Journal Title
  
  Ferroelectrics 355
  
  Pages: 149-153
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Light Scattering Study of Ferroelectric Bismuth Layered Perovskite SrBi_2Ta_2O_92007
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  Ferroelectrics 355
  
  Pages: 149-153
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Perfect Softening of Ferroelectric Mode in the Isotope-exchanged Strontium Titanate of SrTi18O3 studied by Light Scattering2006
- Author(s)
  M. TAKESADA, M. ITOH, T. YAGI
- Journal Title
  
  Phys. Rev. Lett. 96
- NAID
  120000960941
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Precursory Softening of Polar Mode in Isotope-Exchanged Paraelectric Strontium Titanate Studied by Raman Scatteirng2006
- Author(s)
  H. Taniguchi, M. Takesada, M. Itoh, T. Yagi
- Journal Title
  
  Ferroelectrics 337
  
  Pages: 1303-1310
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Raman Scattering Study of Superionic Conductor Lithium Tetraborate Li_2B_4O_72006
- Author(s)
  T. Dekola, T. Yagi, H. Taniguchi, M. Takesada and I. Sekine
- Journal Title
  
  Jpn. J. Appl. Phys. 45, No. 1A
  
  Pages: 152-154
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Perfect Softening of Ferroelectric Mode in the Isotope-exchanged Strontium Titanate of SrTi^<18>O_3 Studied by Light Scattering2006
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  Phys.Rev.Lett 96・22
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] "Anomaly of Acoustic Phonon Mode in Ferroelectric Phase Transition of SrTi^<18>O_3"2006
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  Ferroelectrics 337
  
  Pages: 1333-1339
- Description
  「研究成果報告書概要(和文)」より
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Anomaly of Acoustic Phonon Mode in Ferroelectric Phase Transition of SrTi^18O_32006
- Author(s)
  M. Takesada, M. Itoh, A. Onodera, T. Yagi
- Journal Title
  
  Ferroelectrics 337
  
  Pages: 1333-1339
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] "Perfect Softening of Ferroelectric Mode in the Isotope-exchanged Strontium Titanate of SrTi^<18>O_3 studied by Light Scattering"2006
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  Phys. Rev. Lett. 96
- Description
  「研究成果報告書概要(和文)」より
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Anomaly of Acoustic Phonon Mode in Ferroelectric Phase Transition of SrTi^<18>O_32006
- Author(s)
  Masaki TAKESADA
- Journal Title
  
  Ferroelectrics 377
  
  Pages: 1333-1339
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Phase Transition in Bi-Layered Oxides with Five Perovskite Layers2006
- Author(s)
  A. Onodera, S. Mouri, M. Fukunaga, S. Hiramatsu, M. Takesada and H. Yamashita
- Journal Title
  
  Jpn. J. Appl. Phys. 45
  
  Pages: 9125-9128
- NAID
  40015182120
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Soft Mode Dynamics in ^18O-Exchanged SrTiO_3 as Inhomogeneous System2006
- Author(s)
  H. TANIGUCHI, T. YAGI, M. TAKESADA, and M. ITOH
- Journal Title
  
  Trans. Materials Res. Soc. Jpn 31
  
  Pages: 97-100
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Anomaly of Acoustic Phonon Mode in Ferroelectric Phase Transition of SrTi^<18>O_32006
- Author(s)
  M.Takesada
- Journal Title
  
  Ferroelectrics 337
  
  Pages: 1333-1333
- Data Source
  KAKENHI-PROJECT-17104004
[Journal Article] Perfect Softening of the Ferroelectric Mode in the Isotope-Exchanged Strontium Titanate of SrTi^<18>O_3 Studied by Light Scattering2006
- Author(s)
  M.Takesada
- Journal Title
  
  Phys.Rev.Lett. 96
  
  Pages: 2276021-2276021
- Data Source
  KAKENHI-PROJECT-17104004
[Journal Article] ペロフスカイト型量子常誘電性酸化物の巨大な光誘起効果2005
- Author(s)
  武貞正樹, 八木駿郎, 伊藤満, 石川忠彦, 腰原伸也
- Journal Title
  
  固体物理 40・2
  
  Pages: 113-120
- NAID
  40006606495
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] ペロフスカイト型量子常誘電性酸化物の巨大な光誘起効果2005
- Author(s)
  武貞正樹
- Journal Title
  
  固体物理 40・2
  
  Pages: 113-120
- NAID
  40006606495
- Data Source
  KAKENHI-PROJECT-14702006
[Journal Article] ペロフスカイト型量子常誘電性酸化物の巨大な光誘起効果2005
- Author(s)
  武貞正樹、八木駿郎、伊藤満、石川忠彦、腰原伸也
- Journal Title
  
  固体物理 40
  
  Pages: 113-120
- NAID
  40006606495
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Investigation of Ferroelectric Transition in SrTi^18O_3 under Hydrostatic Pressure2005
- Author(s)
  M. KURITA, T. ISHIKAWA, S. KOSHIHARA, M. ITOH, M. TAKESADA, A. MOREAC, and J. C. AMELINE
- Journal Title
  
  J. Korean Phys. Soc. 46
  
  Pages: 190-191
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Isotope effect on the soft-mode dynamics of SrTiO3 studied by Raman scattering2005
- Author(s)
  H. TANIGUCHI, T. YAGI, M. TAKESADA and M. ITOH
- Journal Title
  
  Phys. Rev. B 72
  
  Pages: 64111-8
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Gigantic Photo-induced Effects in Quantum Paraelectrics Perovskite Oxides.2005
- Author(s)
  M.Takesada, T.Yagi, M.Itoh, T.Ishikawa, S.Koshihara
- Journal Title
  
  Kotaibutsuri 40-2
  
  Pages: 113-113
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14204029
[Journal Article] ペロフスカイト型量子常誘電性酸化物の巨大な光誘起効果2005
- Author(s)
  武貞正樹
- Journal Title
  
  固体物理 40・2
  
  Pages: 113-113
- NAID
  40006606495
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-14204029
[Journal Article] Growth of Ferroelectric Micro-Regions in SrTiO_3 and SrTi(^18O_0:23^16O_0:77)_3 Studied by Raman Scattering2005
- Author(s)
  H. TANIGUCHI, T. YAGI, M. TAKESADA and M. ITOH
- Journal Title
  
  J. Korean Phys. Soc. 46
  
  Pages: 195-197
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] 「ペロフスカイト型量子常誘電性酸化物の巨大な光誘起効果」2005
- Author(s)
  武貞正樹
- Journal Title
  
  固体物理 40
  
  Pages: 113-120
- NAID
  40006606495
- Description
  「研究成果報告書概要(和文)」より
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17340088
[Journal Article] Growth of Ferroelectric Micro-region in SrTiO_3 and SrTi(^<18>O_<0.23>^<16>O_<0.77>)_3 Studied by Raman Scattering.2005
- Author(s)
  H.Taniguchi, T.Yagi, M.Takesada, M.Itoh
- Journal Title
  
  J.Korean Phys.Soc. 46-1
  
  Pages: 195-195
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14204029
[Journal Article] Photoinduced Phenomena in Quantum Paraelectric Oxides by Ultraviolet Laser Irradiation2004
- Author(s)
  M.TAKESADA
- Journal Title
  
  Ferroelectrics 298
  
  Pages: 317-323
- Data Source
  KAKENHI-PROJECT-14702006
[Journal Article] Effect of Oxygen Isotope Exchange on Ferroelectric Micro-region in SrTiO_3 Studied by Raman Scattering.2004
- Author(s)
  H.Taniguchi, M.Takesada, M.Itoh, T.Yagi
- Journal Title
  
  J.Phys.Soc.Jpn. 3262
  
  Pages: 73-12
- NAID
  110001979292
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-14204029
[Presentation] Hyper Rayleigh Scattering Spectra in the Vicinity of Ferroelectric Phase Transition Point2024
- Author(s)
  M. Takesada
- Organizer
  Joint International Workshop of 10th WFF & 8th WFSM
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K20855
[Presentation] 同位体酸素置換チタン酸ストロンチウム薄膜の低振動数ラマン散乱2023
- Author(s)
  山下現, 武貞正樹, 高島浩, 相浦義弘, 伊藤満
- Organizer
  日本物理学会第78回年次大会
- Data Source
  KAKENHI-PROJECT-23K20855
[Presentation] ペロフスカイト型強誘電性ナノ結晶のハイパーラマン散乱2022
- Author(s)
  武貞正樹, 高島浩, 伯田幸也
- Organizer
  日本物理学会第77回年次大会
- Data Source
  KAKENHI-PROJECT-23K20855
[Presentation] ハフニア系強誘電体薄膜Hf0.5Zr0.5O2におけるラマン散乱2022
- Author(s)
  武貞正樹
- Organizer
  日本物理学会2022秋季大会
- Data Source
  KAKENHI-PROJECT-20H02445
[Presentation] 酸素同位体置換したチタン酸ストロンチウム薄膜のソフトモードダイナミクス2022
- Author(s)
  山下現, 武貞正樹, 高島浩, 相浦義弘, 押目典宏, 伊藤満
- Organizer
  日本物理学会
- Data Source
  KAKENHI-PROJECT-23K20855
[Presentation] チタン酸鉛ナノ結晶における強誘電ナノ秩序化現象と低振動数ゆらぎ2020
- Author(s)
  清水一揮, 伯田幸也, 高島浩, 伊藤満, 武貞正樹
- Organizer
  日本物理学会第75回年次大会
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] 化学当量的なYbFe2O4の短距離磁気秩序に関わる新たな格子歪転移2019
- Author(s)
  藤原孝将, 藤井達生, 武貞正樹, 孫易琪, 加倉井和久, 池田直
- Organizer
  日本物理学会第７４回年次大会（２０１９年）
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] 強誘電性BaTiO3ナノ結晶におけるフォノン異常とサイズ効果2019
- Author(s)
  菅原友幹、武貞正樹、高島浩、伊藤満B、伯田幸也
- Organizer
  日本物理学会第74回年次大会
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] 超臨界水熱合成法で作製されたチタン酸鉛ナノ結晶の強誘電性ソフトモードダイナミクス2019
- Author(s)
  武貞正樹、高島浩、伊藤満、伯田幸也
- Organizer
  日本物理学会第74回年次大会
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] HfO2系強誘電体薄膜Hf0.5Zr0.5O2における低振動数顕微ラマン散乱2019
- Author(s)
  水野大樹、右田真司、武貞正樹
- Organizer
  日本物理学会
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] 強誘電性BaTiO3ナノ結晶におけるフォノン異常とサイズ効果2019
- Author(s)
  菅原友幹, 武貞正樹, 高島浩, 伊藤満, 伯田幸也
- Organizer
  日本物理学会第７４回年次大会（２０１９年）
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] Dynamics of Ferroelectric Nano Ordering in Perovskite-Type Nanocrystals Studied by High Resolution Broadband Light Scattering2019
- Author(s)
  Masaki TAKESADA
- Organizer
  The 13th Pacific Rim Conference of Ceramic Societies (PACRIM13)
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] 化学当量的なYbFe2O4の短距離磁気秩序に関わる新たな格子歪転移2019
- Author(s)
  藤原孝将、藤井達生、武貞正樹、孫易琪、加倉井和久、池田直
- Organizer
  日本物理学会第74回年次大会
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] 超臨界水熱合成法で作製されたチタン酸鉛ナノ結晶の強誘電性ソフトモードダイナミクス2019
- Author(s)
  武貞正樹, 高島浩, 伊藤満, 伯田幸也
- Organizer
  日本物理学会第７４回年次大会（２０１９年）
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] チタン酸鉛ナノ結晶における強誘電性と低振動数ゆらぎ2019
- Author(s)
  清水一揮、伯田幸也、高島浩、伊藤満、武貞正樹
- Organizer
  日本物理学会
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] Phonon anomaly and size effect in perovskite type ferroelectric nanocrystals2019
- Author(s)
  Masaki TAKESADA
- Organizer
  Joint International Workshop of WFF&WFSM 2019
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] 走査透過型電子顕微鏡法による BaTiO3ナノ粒子の微構造解析2018
- Author(s)
  青木舞、佐藤幸生、寺西亮、金子賢治、武貞正樹、高島浩、陶究、伯田幸也
- Organizer
  強的秩序とその操作に関わる研究グループ第7回研究会
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] Dynamical hierarchy of ferroelectric nanocrystals of BaTiO3 and PbTiO3 synthesized in supercritical hydrothermal condition2018
- Author(s)
  Masaki Takesada, Yuki Sugawara, Kiwamu Sue, Hiroshi Takashima, Mitsuru Itoh, Yukiya Hakuta
- Organizer
  14-th Russian/CIS/Baltic/Japan Symposium on Ferroelectricity
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] Low-frequency Fluctuations of Multiferroic Single Crystal YbFe2O42018
- Author(s)
  Yiqi SUN, Masaki TAKESADA,
- Organizer
  日本MRS 第２８回年次大会
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] Hydrothermal synthesis of perovskite metal oxide nanoparticles in supercritical water2018
- Author(s)
  Yukiya Hakuta, Hiroshi Takashima, and Masaki Takesada
- Organizer
  14-th Russian/CIS/Baltic/Japan Symposium on Ferroelectricity
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] 超臨界水熱合成法で作製されたBaTiO3の巨視的強誘電性相転移から強誘電的ナノ秩序形成へのクロスオーバー2018
- Author(s)
  武貞正樹, 高島浩, 伊藤満, 伯田幸也
- Organizer
  日本MRS 第２８回年次大会
- Data Source
  KAKENHI-PROJECT-18K03476
[Presentation] 強誘電性BaTiO3ナノ結晶の広帯域光散乱分光II2017
- Author(s)
  武貞正樹, 菅原友幹, 陶究, 高島浩, 伯田幸也
- Organizer
  日本物理学会　第72回年次大会（2017年）
- Place of Presentation
  大阪大学（大阪府豊中市）
- Year and Date
  2017-03-17
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] Dynamics of Geometrical Nano Ordering in Ferroelectric Nanocrystals of BaTiO32017
- Author(s)
  武貞正樹
- Organizer
  Joint Workshop of WFF&WFSM 2017
- Place of Presentation
  北海道大学（北海道札幌市）
- Year and Date
  2017-03-02
- Invited
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 超臨界水熱合成法によって作製されたSrTi18O3ナノ結晶の広帯域光散乱分光Ⅱ2017
- Author(s)
  槇口馨, 武貞正樹, 高島浩, 伯田幸也, 伊藤満
- Organizer
  日本物理学会　第72回年次大会（2017年）
- Place of Presentation
  大阪大学（大阪府豊中市）
- Year and Date
  2017-03-17
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 超臨界水熱合成法によって作成された SrTi18O3ナノ結晶の広帯域光散乱分光2017
- Author(s)
  槇口馨, 武貞正樹, 伯田幸也, 高島浩，伊藤満
- Organizer
  Joint Workshop of WFF&WFSM 2017
- Place of Presentation
  北海道大学（北海道札幌市）
- Year and Date
  2017-03-02
- Invited
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 超臨界水熱合成法によって作製されたSrTi18O3ナノ結晶の広帯域光散乱分光2016
- Author(s)
  槇口馨, 武貞正樹, 伯田幸也, 高島浩, 伊藤満
- Organizer
  日本物理学会2016年秋季大会
- Place of Presentation
  金沢大学（石川県金沢市）
- Year and Date
  2016-09-13
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 超臨界水熱合成法で作製されたSrTiO3ナノ結晶の広帯域光散乱分光II2016
- Author(s)
  松島浩平, 槇口馨, 武貞正樹, 伯田幸也A, 高島浩A, 小野寺彰
- Organizer
  日本物理学会　第71回年次大会
- Place of Presentation
  東北学院大学（宮城県仙台市）
- Year and Date
  2016-03-19
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 強誘電性BaTiO3ナノ結晶の広帯域光散乱分光2016
- Author(s)
  武貞正樹, 菅原友幹, 陶究, 高島浩, 伯田幸也
- Organizer
  日本物理学会2016年秋季大会
- Place of Presentation
  金沢大学（石川県金沢市）
- Year and Date
  2016-09-13
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] Dynamics of Geometrical Ordering in Ferroelectric Nanocrystals Studied by Broadband Light Scattering and Second Harmonic Generation2016
- Author(s)
  Masaki TAKESADA
- Organizer
  The Third Myanmar-Japan International Symposium
- Place of Presentation
  Pathein University(Pathein, Myanmar)
- Year and Date
  2016-12-03
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 超臨界水熱合成法で作成されたBaTiO3ナノ結晶の広帯域光散乱分光とSHG測定2016
- Author(s)
  武貞正樹, 伯田幸也A, 陶究A, 高島浩A, 小野寺彰
- Organizer
  日本物理学会　第71回年次大会
- Place of Presentation
  東北学院大学（宮城県仙台市）
- Year and Date
  2016-03-19
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 強誘電性ナノ結晶の相転移ダイナミクス2015
- Author(s)
  武貞正樹
- Organizer
  光・電子機能材料研究会「最近の光・電子機能材料の進展Ⅲ」
- Place of Presentation
  九州工業大学（福岡県北九州市）
- Year and Date
  2015-12-05
- Invited
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] ナノ強誘電体チタン酸バリウムにおける広帯域光散乱実験と第２次高調波発生2015
- Author(s)
  武貞正樹、伯田幸也、陶究、高島浩、小野寺彰
- Organizer
  日本MRS　第25回日本MRS年次大会
- Place of Presentation
  横浜市開港記念会館（神奈川県横浜市）
- Year and Date
  2015-12-08
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 超臨界水熱合成法で作製されたSrTiO3ナノ結晶の広帯域光散乱分光2015
- Author(s)
  松島浩平, 武貞正樹, 伯田幸也A, 高島浩A, 小野寺彰
- Organizer
  日本物理学会　2015年秋季大会
- Place of Presentation
  関西大学（大阪府吹田市）
- Year and Date
  2015-09-16
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 広帯域光散乱分光法で探るナノ結晶のトロイダル強誘電性と秩序形成ダイナミクス2015
- Author(s)
  武貞正樹
- Organizer
  日本物理学会　2015年秋季大会
- Place of Presentation
  関西大学（大阪府吹田市）
- Year and Date
  2015-09-16
- Invited
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 極低温におけるSrTiO_3の光散乱スペクトルII2010
- Author(s)
  八木駿郎、武貞正樹
- Organizer
  日本物理学会第65回年次大会
- Place of Presentation
  岡山大学
- Year and Date
  2010-03-21
- Data Source
  KAKENHI-PROJECT-17104004
[Presentation] 極低温におけるSrTiO3の光散乱スペクトルII2010
- Author(s)
  八木駿郎, 武貞正樹
- Organizer
  日本物理学会第65回年次大会
- Place of Presentation
  岡山大学
- Data Source
  KAKENHI-PROJECT-17104004
[Presentation] Low frequency Raman scattering in Bi layered perovskite Ba_2Bi_4Ti_5O_182008
- Author(s)
  M. Fukunaga, M. Takesada, and A. Onodera
- Organizer
  Physical Society of Japan
- Place of Presentation
  Kinki University
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] 強誘電性Bi層状ペロフスカイトの光誘起効果2008
- Author(s)
  武貞正樹
- Organizer
  日本物理学会第63回年次大会
- Place of Presentation
  近畿大学
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Photoinduced effect in Ferroelectric bismuth layered perovskites2008
- Author(s)
  M. Takesada, M. Fukunaga, H. Nihonmatsu, S. Kataoka, A. Onodera
- Organizer
  Physical Society of Japan
- Place of Presentation
  Kinki University
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] The Central Peak on Bismuth-Layered Perovskites, Ba_2Bi_4Ti_5O_182008
- Author(s)
  S. Kataoka, M. Takesada, A. Ueki, H. Nihonmatsu, and A. Onodera
- Organizer
  Physical Society of Japan
- Place of Presentation
  Kinki University
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Acoustic Anomaly and Perfect Softening of Ferroelectric Mode in SrTi^18O_32007
- Author(s)
  M. TAKESADA, H. NIHONMATSU, A. ONODERA, M. ITOH, AND T. YAGI
- Organizer
  11th European Meeting on Ferroelectricity
- Place of Presentation
  Bled, Slovenia
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Perfect Softening of Slater Type TO Mode in Perovskite Ferroelectric Oxide SrTi18O32007
- Author(s)
  M. Takesada, M. Itoh, A. Onodera and T. Yagi
- Organizer
  12th International Conference on Phonon Scattering in Condensed Matter (PHONONS2007)
- Place of Presentation
  Paris, France
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Acoustic Anomary and Perfect Softening of Ferroelectric Mode in SrTi_18O_32007
- Author(s)
  M. Takesada
- Organizer
  11_th European Meeting on Ferroelectricity(EMF-2007)
- Place of Presentation
  Bled(Slovenia)
- Year and Date
  2007-06-04
- Data Source
  KAKENHI-PROJECT-17104004
[Presentation] Temeperature Dependency of Lattice Constant of CaCu_3Ti_4O_12 Perovskite2007
- Author(s)
  S. Hiramatsu, M. Fukunaga, H. Nagasawa, M. Takesada, H. Satoh, A. Onodera
- Organizer
  Physical Society of Japan
- Place of Presentation
  Kagoshima Univ.
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Photo induced effect of Ni-doped KTaO3 studied by Raman scattering2007
- Author(s)
  M. Takesada, H. Nihonmatsu, A. Onodera, Y. Akishige, T. Yagi, and S. Koshihara
- Organizer
  Physical Society of Japan
- Place of Presentation
  Hokkaido Univ.
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Ni-doped KTaO_3 studied by low frequency light scattering2007
- Author(s)
  H. Nihonmatsu, M. Takesada, Y. AkishigeA and A. Onodera
- Organizer
  Physical Society of Japan
- Place of Presentation
  Kagoshima Univ.
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Acoustic Anomaly and Perfect Softening of Ferroelectric Mode in SrTi^<18>O_32007
- Author(s)
  Masaki TAKESADA
- Organizer
  11th European Meeting on Ferroelectricity
- Place of Presentation
  Bled, Slovenia
- Year and Date
  2007-09-05
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Ni-doped KTa03における低振動ラマン散乱スペクトルの光誘起効果2007
- Author(s)
  武貞正樹
- Organizer
  日本物理学会第62回年次大会
- Place of Presentation
  北海道大学
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] 量子強誘電体における極性ソフトモードの完全凍結と光誘起効果2007
- Author(s)
  武貞正樹
- Organizer
  大学研究推進体第1回公開研究会
- Place of Presentation
  山口大学
- Year and Date
  2007-12-15
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] SrTi^<18>O_3の強誘電性ソフトモード完全凍結と従来の矛盾した結果との比較2007
- Author(s)
  武貞正樹
- Organizer
  日本物理学会 2007年春季大会
- Place of Presentation
  鹿児島大学
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Perfect softening of ferroelectric mode in SrTi^18O_32007
- Author(s)
  M. Takesada, M. Itoh, A. Onodera and T. Yagi
- Organizer
  Physical Society of Japan
- Place of Presentation
  Kagoshima Univ.
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Light Irradiation Effect in Ferroelectric Li-doped ZnO2007
- Author(s)
  M. Fukunaga, M. Takesada and A. Onodera
- Organizer
  Physical Society of Japan
- Place of Presentation
  Hokkaido Univ.
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Perfect Softening of Slater Type TO Mode in Perovskite Ferroelectric Oxide SrTi^<18>O_32007
- Author(s)
  Masaki TAKESADA
- Organizer
  PHONONS2007
- Place of Presentation
  Paris, France
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Dopant Effect of huge permittivity in Ca_0.25Cu_0.75TiO_32007
- Author(s)
  S. Hiramatsu, M. Fukunaga, M. Takesada, A. Onodera
- Organizer
  Physical Society of Japan
- Place of Presentation
  Hokkaido Univ.
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] "Perfect Softening of Slater-type Ferroelectric Mode of SrTi18O3."2006
- Author(s)
  Masaki TAKESADA
- Organizer
  The 5th Asian Meeting on Ferroelectrics
- Place of Presentation
  Tokyo Univ. of Science
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] The 8th Russia/Cis Demonstration of Perfect Softening of the Slater-Type Ferroelectric Mode on SrTi^18O_32006
- Author(s)
  M. TAKESADA, M. ITOH, A. ONODERA, and T. YAGI
- Organizer
  Baltic/Japan Symposium on Ferroelectricity (RCBJSF-8)
- Place of Presentation
  Univ. of Tsukuba
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] 「放射光による量子常誘電体KTaO_3のX線照射効果」2006
- Author(s)
  武貞正樹
- Organizer
  第3回ナノ光制御による巨視的秩序形成と物性発現に関する研究会
- Place of Presentation
  名古屋大学
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] 「Bi層状ペロフスカイト型強誘電体SrBi_2Ta_2O_9の低振動数光散乱」2006
- Author(s)
  武貞正樹
- Organizer
  日本物理学会2006年秋季大会
- Place of Presentation
  千葉大
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] 「放射光による量子常誘電体の光・電場誘起協力現象」2006
- Author(s)
  武貞正樹
- Organizer
  加速器科学支援ミニワークショップ
- Place of Presentation
  高エネルギー物理学研究所
- Year and Date
  2006-03-07
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] "Demonstration of Perfect Softening of the Slater-Type Ferroelectric Mode on SrTi^<18>O_3"2006
- Author(s)
  Masaki TAKESADA
- Organizer
  The 8th Russia/Cis/Baltic/Japan Symposium on Ferroelectricity (RCBJSF-8)
- Place of Presentation
  University of Tsukuba
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] Perfect Softening of Slater- type Ferroelectric Mode of SrTi^18O_32006
- Author(s)
  M. Takesada, M. Itoh, A. Onodera and T. Yagi
- Organizer
  The 5th Asian Meeting on Ferroelectrics
- Place of Presentation
  Tokyo Univ. of Science
- Description
  「研究成果報告書概要(欧文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] "Perfect Softening of Ferroelectric Mode of SrTi^<18>O_3."2006
- Author(s)
  Masaki TAKESADA
- Organizer
  The 6th Japan-Korea Conferenceon Ferroelectricity
- Place of Presentation
  Tohoku University
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] "Photoinduced Cooperative Phenomena in Quantum Paraelectric Perovskites under Electric Field"2005
- Author(s)
  Masaki TAKESADA
- Organizer
  The 11th International Meeting on Ferroelectricity (IMF11)
- Place of Presentation
  Foz do Iguacu, (Brazil)
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] 「量子常誘電体SrTiO_3における光-電場誘起低振動数光散乱」2005
- Author(s)
  武貞正樹
- Organizer
  日本物理学会2005年秋季大会
- Place of Presentation
  同志社大学
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] 「SrTiO3の光誘起による巨大誘電率」2005
- Author(s)
  武貞正樹
- Organizer
  東北大学多元物質科学研究所ミニシンポジウム
- Place of Presentation
  東北大学
- Year and Date
  2005-10-25
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] "Ultra Low Frequency Raman Scattring Study of Soft mode dynamics in isotope exchanged ferroelectrics of SrTi^<18>O_3"2005
- Author(s)
  Masaki TAKESADA
- Organizer
  The 11th International Meeting on Ferroelectricity
- Place of Presentation
  Foz do Iguacu, (Brazil)
- Description
  「研究成果報告書概要(和文)」より
- Data Source
  KAKENHI-PROJECT-17340088
[Presentation] ビスマス層状ペロフスカイトPbBi4Ti4O15の広帯域光散乱分光II
- Author(s)
  太田崇明，武貞正樹，野口祐二，宮山勝，小野寺彰
- Organizer
  日本物理学会第70回年次大会（2015年）
- Place of Presentation
  早稲田大学東京都新宿区
- Year and Date
  2015-03-21 – 2015-03-24
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] Aサイト秩序型ペロフスカイトCaCu3Ti4O12の高温X線回折
- Author(s)
  堀哲弥，長谷川奈保，小野寺彰，武貞正樹，佐藤博保
- Organizer
  日本物理学会第70回年次大会（2015年）
- Place of Presentation
  早稲田大学東京都新宿区
- Year and Date
  2015-03-21 – 2015-03-24
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] Broadband Light Scattering in Ferroelectric Nanocrystals of BaTiO3
- Author(s)
  Masaki Takesada, Yukiya Hakuta, Hiroshi Takashima and Akira Onodera
- Organizer
  The 10th Japan & Korea Conference of Ferroelectrics JKC-FE10
- Place of Presentation
  広島国際会議場　広島県広島市
- Year and Date
  2014-08-17 – 2014-08-20
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] Broadband Light Scattering and Second Harmonic Generation in Ferroelectric Nanocrystals
- Author(s)
  Masaki Takesada
- Organizer
  Joint International Symposium RCBJSF - 2014 - FM&NT
- Place of Presentation
  Riga, Latvia
- Year and Date
  2014-09-29 – 2014-10-02
- Invited
- Data Source
  KAKENHI-PROJECT-26400306
[Presentation] 超臨界水熱合成法で作成されたBaTiO3ナノ結晶の広帯域光散乱分光III
- Author(s)
  武貞正樹，伯田幸也，高島浩，小野寺彰
- Organizer
  日本物理学会70回年次大会（2015年）
- Place of Presentation
  早稲田大学東京都新宿区
- Year and Date
  2015-03-21 – 2015-03-24
- Data Source
  KAKENHI-PROJECT-26400306

1. TOSHIROU Yagi (30002132)

# of Collaborated Projects: 2 results

# of Collaborated Products: 8 results
2. ONODERA Ajira (40142682)

# of Collaborated Projects: 2 results

# of Collaborated Products: 21 results
3. ITOH Mitsuru (30151541)

# of Collaborated Projects: 2 results

# of Collaborated Products: 5 results
4. TOKUNAGA Masaharu (60001682)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. YU Jianding (40358750)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. MASUNO Atsunobu (00378879)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
7. KUROIWA Yoshihiro (40225280)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
8. SHIGEMATSU Hirotake (40281068)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
9. YODA Shinichi (00344276)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
10. HAKUTA Yukiya (30250707)

# of Collaborated Projects: 1 results

# of Collaborated Products: 11 results
11. SUE Kiwamu (60333845)

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results
12. TAKASHIMA Hiroshi (10357353)

# of Collaborated Projects: 1 results

# of Collaborated Products: 11 results
13. Asanuma Shutaro (30409635)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
14. 森田行則 (60358190)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
15. 太田裕之 (70356640)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
16. 右田真司 (00358079)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
17. 齊藤雄太 (50738052)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
18. 陣内修 (50360566)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
19. 尾田欣也 (60442943)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
20. 櫻井浩 (80251122)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
21. 石川健三 (90159690)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
22. MATSUSHIMA Kohei

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
23. MAKIGUCHI Kei

# of Collaborated Projects: 1 results

# of Collaborated Products: 4 results

Takesada masaki 武貞 正樹

TAKESADA Masaki 武貞 正樹

Takesada Masaki 武貞 正樹

武貞 正樹 タケサダ マサキ

Research Projects

Research Products

Co-Researchers

Study of the correction term for the Fermi golden rule using multi-methods

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Exploration of novel physical properties of HfO2-based ferroelectrics by controlling polarization fluctuations

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Ferroelectric nano-ordering and fractal nature in ferroelectric nanocrystalsPrincipal Investigator

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Toroidal ferroelectricity and photoresponse in ferroelectric nanocrystalsPrincipal Investigator

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Study of the Mechanism of Giant Permittivity in Oxygen-Deficient Hexagonal BaTiO_3 Single Crystals

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Study of the coherent quantum fluctuations competed with formation of the long-range ferroelectric order

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Photoinduced Vibronic Soft mode Dynamics in Ferroelectric Quantum Cooperative PhenomenaPrincipal Investigator

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量子揺らぎにおける非平衡光誘起協力現象の機構解明Principal Investigator

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DYNAMICS OF QUANTUM FLUCTUATION STUDIED BY COHERENT PHONON EXCITATION METHOD

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誘電体における光誘起構造相転移の動的機構解明Principal Investigator

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[Journal Article] Pioneering dielectric materials of Sn-doped Nb0.025Ti0.975O2 ceramics with excellent temperature and humidity stability for advanced ceramic capacitors2024

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Data Source

[Journal Article] Origins of high-performance giant dielectric properties in TiO2 co-doped with aliovalent ions via broadband dielectric spectroscopy2023

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Data Source

[Journal Article] Experimental study and DFT calculations of improved giant dielectric properties of Ni2+/Ta5+ co-doped TiO2 by engineering defects and internal interfaces2022

Author(s)

Journal Title

Takesada masaki 武貞正樹

TAKESADA Masaki 武貞正樹

Takesada Masaki 武貞正樹

武貞正樹タケサダマサキ