Local structure analysis and polarization mapping of polarization nano domains of ferroelectrics using STEM-CBED

• Project/Area Number: 25287068
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics I
• Research Institution: Tohoku University
• Principal Investigator: Tsuda Kenji 東北大学, 多元物質科学研究所, 教授 (00241274)
• Co-Investigator(Renkei-kenkyūsha): TERAUCHI Masami 東北大学, 多元物質科学研究所, 教授 (30192652) ; NISHIMATSU Takeshi 東北大学, 金属材料研究所, 助教 (70323095)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2014: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000); Fiscal Year 2013: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
• Keywords: 収束電子回折 / 電子顕微鏡 / STEM-CBED法 / 誘電体物性 / 構造相転移 / STEM-CBED / 分極マッピング

Outline of Final Research Achievements

A new method has been developed for investigating two-dimensional distributions of nanometer-scale local structures, with the combined use of scanning transmission electron microscopy and convergent-beam electron diffraction (STEM-CBED). The STEM-CBED system was constructed on an energy-filter transmission electron microscopy JEM-2010FEF. The method was applied to perovskite-type ferroelectrics such as barium titanate (BaTiO3), nanometer scale local structures were investigated below and above their ferroelectric phase transitions. Nanometer-scale fluctuations of polarization clusters were successfully observed

Research Products

• [Journal Article] Two-dimensional mapping of local structural fluctuationsin the orthorhombic phase of KNbO3 by the combined use of the scanning transmission electron microscopy and convergent-beam electron diffraction (2015)
  • Author(s): Kenji Tsuda and Michiyoshi Tanaka
  • Journal Title: Appl. Phys. Express Volume: 8 Issue: 8 Pages: 081501-081501
  • DOI: 10.7567/apex.8.081501
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Convergent-Beam Electron Diffraction Study of Local Structural Fluctuations in Perovskite-Type Ferroelectrics (2015)
  • Author(s): Kenji Tsuda
  • Journal Title: Microscopy and Microanalysis Volume: Suppl. S3 Issue: S3 Pages: 119-120
  • DOI: 10.1017/s1431927615001397
  • Acknowledgement Compliant
• [Journal Article] Structure refinements of the LPSO-Mg alloys based on STEM imaging combined with CBED (2015)
  • Author(s): Kenya Yamashita, Koji Inoue, Kosuke Nagai, Kenji Tsuda and Eiji Abe
  • Journal Title: Microscopy Volume: 64 Suppl. 1 Issue: suppl 1 Pages: i108.1-i108
  • DOI: 10.1093/jmicro/dfv267
• [Journal Article] Effects of W on microstructure of as-cast 28 wt.%Cr-2.6 wt.%C-(0-10) wt.%W irons (2015)
  • Author(s): S. Imurai, C. Thanachayanont, J.T.H. Pearce, K. Tsuda and T. Chairuangsri
  • Journal Title: Materials Characterization Volume: 99 Pages: 52-60
  • DOI: 10.1016/j.matchar.2014.11.012
  • Peer Reviewed
• [Journal Article] Effects of Mo on microstructure of as-cast 28 wt.% Cr-2.6 wt.% C-(0-10) wt.% Mo irons (2014)
  • Author(s): S. Imurai, C. Thanachayanont, J. T. H. Pearce, K. Tsuda and T. Chairuangsri
  • Journal Title: Materials Characterization Volume: 09 Pages: 99-112
  • DOI: 10.1016/j.matchar.2014.01.014
  • Peer Reviewed
• [Journal Article] Van der Waals epitaxial growth of topological insulator Bi2 x Sb x Te3 y Se y ultrathin nanoplate on electrically insulating fluorophlogopite mica (2014)
  • Author(s): Ngoc Han Tu, Yoichi Tanabe, Khuong Kim Huynh, Yohei Sato, Hidetoshi Oguro, Satoshi Heguri, Kenji Tsuda, Masami Terauchi, Kazuo Watanabe, and Katsumi Tanigaki
  • Journal Title: Appl. Phys. Lett. Volume: 105 Issue: 6
  • DOI: 10.1063/1.4892576
  • Peer Reviewed
• [Journal Article] Two-dimensional mapping of polarizations of rhombohedral nanostructures in the tetragonal phase of BaTiO3 by the combined use of the scanning transmission electron microscopy and convergent-beam electron diffraction methods (2013)
  • Author(s): Kenji Tsuda, Akira Yasuhara, and Michiyoshi Tanaka
  • Journal Title: Appl. Phys. Lett. Volume: 103 Issue: 8 Pages: 082908-082908
  • DOI: 10.1063/1.4819221
  • Peer Reviewed
• [Journal Article] Convergent-Beam Electron Diffraction Study of the Local Structure of the Tetragonal Phase of PbTiO3 (2013)
  • Author(s): Kenji Tsuda, and Michiyoshi Tanaka
  • Journal Title: Appl. Phys. Express Volume: 6 Issue: 10 Pages: 101501-101501
  • DOI: 10.7567/apex.6.101501
  • NAID: 210000136806
  • Peer Reviewed
• [Presentation] Mapping of Nanoscale Structural Fluctuations in Ferroelectric BaTiO3 using STEM-CBED (2016)
  • Author(s): K. Tsuda
  • Organizer: Microscopy and Microanalysis 2015
  • Place of Presentation: Greater Columbus Convention Center, Columbus, OH, USA
  • Year and Date: 2016-07-24
  • Int'l Joint Research / Invited
• [Presentation] STEM-CBED法によるBaTiO3立方晶相の局所構造の研究 II (2016)
  • Author(s): 津田健治，田中通義
  • Organizer: 日本物理学会 第71回年次大会
  • Place of Presentation: 東北学院大学泉キャンパス，仙台
  • Year and Date: 2016-03-19
• [Presentation] STEM-CBED法によるKNbO3強誘電斜方晶相の局所構造・分極マッピング (2015)
  • Author(s): 津田健治，田中通義
  • Organizer: 日本結晶学会平成27年度年会
  • Place of Presentation: 大阪府立大学，大阪
  • Year and Date: 2015-10-17
• [Presentation] STEM-CBED法によるBaTiO3立方晶相の局所構造の研究 (2015)
  • Author(s): 津田健治，田中通義
  • Organizer: 日本物理学会 2015年秋季大会
  • Place of Presentation: 関西大学千里山キャンパス，大阪
  • Year and Date: 2015-09-16
• [Presentation] Convergent-beam electron diffraction study of local structural fluctuations in perovskite-type ferroelectrics (2015)
  • Author(s): Kenji Tsuda
  • Organizer: Microscopy and Microanalysis 2015
  • Place of Presentation: Oregon Convention Center, Portland, OR, USA
  • Year and Date: 2015-08-02
  • Int'l Joint Research / Invited
• [Presentation] STEM-CBED法によるKNbO3強誘電相の局所構造揺らぎの研究 (2015)
  • Author(s): 津田健治，田中通義
  • Organizer: 第32回強誘電体応用会議 (FMA32)
  • Place of Presentation: コープイン京都，京都
  • Year and Date: 2015-05-20
• [Presentation] STEM-CBED法によるKNbO3強誘電相の局所構造揺らぎの研究 (2015)
  • Author(s): 津田健治，田中通義
  • Organizer: 日本顕微鏡学会第71回学術講演会
  • Place of Presentation: 国立京都国際会館，京都
  • Year and Date: 2015-05-13
• [Presentation] 収束電子回折法によるペロブスカイト型強誘電体の局所構造揺らぎの解析 (2014)
  • Author(s): 津田健治
  • Organizer: Workshop: CROSSroads of Users and J-PARC
  • Place of Presentation: いばらき量子ビーム研究センター，茨城
  • Year and Date: 2014-09-16 – 2014-09-17
  • Invited
• [Presentation] Study of nanoscale local structures of ferroelectric barium titanate using convergent-beam electron diffraction (2014)
  • Author(s): Kenji Tsuda
  • Organizer: International Conference in Asia (IUMRS-ICA2014)
  • Place of Presentation: Fukuoka Univ., Fukuoka
  • Year and Date: 2014-08-24 – 2014-08-30
  • Invited
• [Presentation] Space group determination and application to phase transformations (2014)
  • Author(s): Kenji Tsuda
  • Organizer: Workshop on Advanced Electron Diffraction Methods for Materials Analysis
  • Place of Presentation: McMaster Univ., Hamilton, Canada
  • Year and Date: 2014-08-14 – 2014-08-15
  • Invited
• [Presentation] Study of nanoscale local structures of ferroelectric barium titanate using convergent-beam electron diffraction (2014)
  • Author(s): Kenji Tsuda
  • Organizer: The 23rd Congress and General Assembly of the International Union of Crystallography (IUCr 2014)
  • Place of Presentation: Montreal, Canada
  • Year and Date: 2014-08-05 – 2014-08-13
  • Invited
• [Presentation] 収束電子回折法による強誘電体のナノスケール結晶構造解析 (2014)
  • Author(s): 津田健治
  • Organizer: 日本顕微鏡学会第70回記念学術講演会
  • Place of Presentation: 幕張メッセ，千葉
  • Year and Date: 2014-05-11 – 2014-05-13
  • Invited
• [Presentation] Study of Nanoscale Local Structures in Ferroelectric Barium Titanate Using Convergent-Beam Electron Diffraction (2013)
  • Author(s): K. Tsuda
  • Organizer: 13th International Meeting on Ferroelectricity (IMF13)
  • Place of Presentation: Jagiellonian Univ., Krakow, Poland
• [Presentation] TEM/STEMによるBaTiO3の局所構造揺らぎの直接観察の可能性 (2013)
  • Author(s): 津田健治
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 徳島大学
• [Presentation] STEM-CBED法によるBaTiO3正方晶相の局所構造・分極マッピング (2013)
  • Author(s): 津田健治，田中通義
  • Organizer: 日本結晶学会平成25年度年会
  • Place of Presentation: 熊本大学
• [Presentation] Study of Nanoscale Local Structures in Ferroelectric Barium Titanate Using Convergent-Beam Electron Diffraction (2013)
  • Author(s): Kenji Tsuda
  • Organizer: 16th US-Japan Seminar on Dielectric and Piezoelectric Materials
  • Place of Presentation: Sheraton Raleigh, Raleigh, NC, USA
  • Invited
• [Presentation] Study of nanoscale local structures of ferroelectric barium titanate using convergent-beam electron diffraction (2013)
  • Author(s): Kenji Tsuda, Rikiya Sano, Akira Yasuhara and Michiyoshi Tanaka
  • Organizer: The 12th Conference of the Asian Crystallographic Association (AsCA2013)
  • Place of Presentation: HKUST, Hong Kong
  • Invited
• [Book] やさしい電子回折と初等結晶学 -- 電子回折図形の指数付け，収束電子回折の使い方 -- 改訂新版 (2014)
  • Author(s): 田中通義、寺内正己、津田健治
  • Total Pages: 250
  • Publisher: 共立出版