Study of super ferromagnetism formed in a self-assembled film of magnetic nanoparticles
Study of super ferromagnetism formed in a self-assembled film of magnetic nanoparticles
批准号:
23710140
负责人:
YAMAMOTO Kazuo
金额:
$2.91万
依托单位国家:
日本
项目类别:
Grant-in-Aid for Young Scientists (B)
财政年份:
2011
资助国家:
日本
项目状态:
已结题
起止时间:
2011 至 2012
中文摘要
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英文摘要
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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