2012 Fiscal Year Final Research Report
Study of super ferromagnetism formed in a self-assembled film of magnetic nanoparticles
| Project/Area Number |
23710140
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Nanomaterials/Nanobioscience
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| Research Institution | 一般財団法人ファインセラミックスセンター (2012)
Japan Fine Ceramics Center (2011) |
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Principal Investigator |
YAMAMOTO Kazuo 一般財団法人ファインセラミックスセンター, ナノ構造研究所, 主任研究員 (80466292)
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| Research Collaborator |
MAJETICH Sara カーネギーメロン大学, 教授
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| Project Period (FY) |
2011 – 2012
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| Keywords | ナノ材料解析・評価 / 電子顕微鏡 / ナノ磁性 |
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| Research Abstract |
Electron holography and Lorentz microscopy were used to clarify the features of "super-ferromagnetism" that is formed in a self-assembled film of magnetic nanoparticles. The electron holography revealed that the micron-scale super-ferromagnetic domain structures moved as the sample temperature increased. Also the holography successfully showed the transition of super-ferromagnetism to super-paramagnetism. The Lorentz microscopy clarified that the magnetic moments in 100 - 300 nm region rapidly rotated because of the thermal energy.
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