Magnetic phase diagram study of ultrathin Co/Si(111) films

J. S. Tsay, Y. D. Yao, Y. Liou

研究成果: 雜誌貢獻會議論文同行評審

9 引文 斯高帕斯(Scopus)

摘要

The magnetic properties of ultrathin Co/Si(111) films were studied by the surface magneto-optic Kerr effect technique. A magnetic phase diagram has been successfully established between 120 and 500 K. Several phases were observe, i.e. a nonferromagnetic Co-Si compound, a low Curie temperature Co film, canted out-of-plane anisotropy, and in-plane anisotropy. The nonferromagnetic Co-Si compound can be reduced by decreasing the substrate temperature. With an Ag buffer layer, the thermal stability of the magnetization for a Co/Si(111) film is lowered. From Auger electron spectroscopy measurement, Ag atoms in the Co/Ag/Si(111) film segregate to top layers even below 350 K. The segregation of Ag atoms to the top layer may damage the magnetic domains in the Co layer and causes the lower thermal stability of the magnetization in the Co/Ag/Si(111) film.

原文英語
頁(從 - 到)856-859
頁數4
期刊Surface Science
454
發行號1
DOIs
出版狀態已發佈 - 2000 五月 20
事件ECOSS-18: 18th European Conference on Surface Science - Vienna, Austria
持續時間: 1999 九月 211999 九月 24

ASJC Scopus subject areas

  • 凝聚態物理學
  • 表面和介面
  • 表面、塗料和薄膜
  • 材料化學

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