Local structure analysis and polarization mapping of polarization nano domains of ferroelectrics using STEM-CBED
| Project/Area Number |
25287068
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Tohoku University |
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Principal Investigator |
Tsuda Kenji 東北大学, 多元物質科学研究所, 教授 (00241274)
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| 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)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥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)
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| 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 |
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| 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
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Report
(4 results)
Research Products
(26 results)
