Magnetic properties of ultrathin Co/Ge(111) and Co/Ge(100) films

W. C. Cheng*, Jyh-Shen Tsay, Y. D. Yao, K. C. Lin, C. S. Yang, S. F. Lee, T. K. Tseng, H. Y. Neih

*此作品的通信作者

研究成果: 雜誌貢獻會議論文同行評審

6 引文 斯高帕斯(Scopus)

摘要

The orientation of the magnetization and the occurrence of interfacial ferromagnetic inactive layers for ultrathin Co films grown on Ge(111) and Ge(100) surfaces have been studied using the in situ surface magneto-optic Kerr effect. On a Ge(111) substrate, cobalt films (≤28 monolayers) with in-plane easy axis of magnetization have been observed; however, on a Ge(100) substrate, ultrathin Co films (14-16 monolayers) with canted out-of-plane easy axis of magnetization were measured. The ferromagnetic inactive layers were formed due to the intermixing of Co and Ge and lowering the Curie temperature by reducing Co film thickness. The Co-Ge compound inactive layers were 3.8 monolayers thick for Co films grown on Ge(111) and 6.2 monolayers thick for Co films deposited on Ge(100). This is attributed to the difference of the density of surface atoms on Ge(111) and Ge(100).

原文英語
頁(從 - 到)7130-7132
頁數3
期刊Journal of Applied Physics
89
發行號11 II
DOIs
出版狀態已發佈 - 2001 六月 1
事件8th Joint Magnetism and Magnetic Materials-Intermag Conference - San Antonio, TX, 美国
持續時間: 2001 一月 72001 一月 11

ASJC Scopus subject areas

  • 物理與天文學 (全部)

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