Nanoscale magnetic configurations of supported Fe nanoparticle assemblies studied by scanning electron microscopy with spin analysis

Wen Chin Lin*, Zheng Gai, Lan Gao, Jian Shen, Pin Jui Hsu, Hong Yu Yen, Minn Tsong Lin

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

8 引文 斯高帕斯(Scopus)

摘要

Microscopic magnetic behavior of supported nanoparticles is strongly correlated with their functionalities, especially in data storage and biological applications, but still needs to be clarified. We studied nanoscale magnetic configurations of Fe nanoparticle assemblies using scanning electron microscopy with polarization analysis. The flux closure domain configurations and the reduced magnetic correlation length (∼250nm), relative to the conventional thin films, are determined. Quantitative analysis indicates the magnetic interaction energy to be 80-99 meV, close to the magnetic dipolar coupling energy. These direct observations evidence the aforereported simulations and will be valuable for fabricating magnetic nanoparticle assemblies with the desired magnetic properties.

原文英語
文章編號024407
期刊Physical Review B - Condensed Matter and Materials Physics
80
發行號2
DOIs
出版狀態已發佈 - 2009 八月 6

ASJC Scopus subject areas

  • 電子、光磁材料
  • 凝聚態物理學

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