| Project/Area Number |
25630272
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Inorganic materials/Physical properties
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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, 准教授 (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 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
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| Keywords | 電子顕微鏡 / 収束電子回折 / 界面構造解析 / 誘電体物性 / 強誘電ドメイン |
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| Outline of Final Research Achievements |
We have attempted to develop a method using the coherent CBED technique, which observes interference fringes appearing in overlapping areas of adjacent CBED disks. We performed coherent CBED experiments to observe ferroelectric domain boundaries of hexagonal YMnO3, using a TEM equipped with a cold-type field emission electron gun, a spherical aberration corrector and an Omega-type energy-filter. Phase differences due to the structure of the domain boundary have been first observed in the interference fringes. A software to simulate coherent CBED patterns at domain boundaries has been developed on the basis of the multiple scattering (dynamical diffraction) theory. Applications of the CBED method to phase transition materials were also conducted.
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