2013 Fiscal Year Final Research Report
Elucidation of Mesoscopic Phenomena in Many-particle Systems-A Challenge from the 3D Electron Microscopy
| Project/Area Number |
23651094
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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 |
Nanostructural science
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| Research Institution | Tohoku University |
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Principal Investigator |
KONNO Toyohiko 東北大学, 金属材料研究所, 教授 (90260447)
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| Co-Investigator(Kenkyū-buntansha) |
SATO Kazuhisa 東北大学, 金属材料研究所, 助教 (70314424)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 多粒子系 / メゾスコピック / 協力現象 / 超常磁性 / 三次元電子顕微鏡 |
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| Research Abstract |
We have examined effect of applied magnetic field on magnetic domains of Co-Ho and Co-Pt thin films using magnetic fields generated by objective lens or mini condenser lens of a transmission electron microscope. For this purpose, we employed a single-axis specimen tilt holder, which is high tilt angle compatible for electron tomography. We obtained following results in situ using the Fresnel mode: (1) magnetic domains in a Co-17at%Ho thin film grow via domain wall movement when magnetic field is applied, and (2) magnetic contrast inside a Co-27at%Pt particle changes when the magnetic field direction changes.
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