Magnetic properties of ultrathin Si/Co/Ir(111) films

J. S. Tsay, Y. C. Liu

研究成果: 雜誌貢獻期刊論文同行評審

6 引文 斯高帕斯(Scopus)

摘要

A magnetic phase diagram for Si/Co/Ir(111) films has been established by the surface magneto-optic Kerr effect technique. The Si coverage, where ferromagnetism vanishes, increases from one monolayer to more than three monolayers as the coverage of the Co layer increases from two to five monolayers. As silicon is deposited on the surface of Co/Ir(111) films, Si atoms interact with the Co layer to form Si-Co compounds. The rough Si/Co interface impedes the motion of domain walls during the magnetization reversal process, thus increasing the coercive force. The formation of nonmagnetic Co-Si compounds reduces the effective magnetic layers, leading to a decrease in Kerr intensity and superparamagnetic behavior of the films.

原文英語
文章編號445003
期刊Journal of Physics Condensed Matter
20
發行號44
DOIs
出版狀態已發佈 - 2008 十一月 5

ASJC Scopus subject areas

  • 材料科學(全部)
  • 凝聚態物理學

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