Depression of the coercive force via oxygen exposure of ultrathin Fe/Pt(111) films

Huei Ying Ho, Ying Chen Lee, Jyh-Shen Tsay

研究成果: 雜誌貢獻期刊論文同行評審

1 引文 斯高帕斯(Scopus)

摘要

The composition and magnetic properties of Fe/Pt(111) after oxygen exposure were investigated. At room temperature the amount of adsorbed oxygen on the surface increased as oxygen exposure also increased until saturation. For Fe/Pt(111) that were thinner than two monolayers, the oxidative process dominated the initial oxygen exposure. In case of thicker Fe, the physical adsorption was more important. Due to the ferromagnetic properties of the iron oxides (α-Fe2O3), the Kerr hysteresis loops experienced a slight change. We estimated that the diffusion length of oxygen atoms into the Fe films were approximately three monolayers. Under saturated oxygen exposure, the formation of iron oxide hindered the formation of ordered Fe-Pt alloys and results in a depression on the coercive force.

原文英語
文章編號5467457
頁(從 - 到)1360-1362
頁數3
期刊IEEE Transactions on Magnetics
46
發行號6
DOIs
出版狀態已發佈 - 2010 六月

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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