Origin on amorphization of Co-Mo magnetic thin films: Experiments and thermodynamic calculation

G. W. Qin, B. Yang, N. Xiao, Y. P. Ren, M. Jiang, X. Zhao, K. Oikawa

研究成果: Article査読

8 被引用数 (Scopus)

抄録

Amorphisation of Co-Mo magnetic thin films has been studied by using X-ray diffraction technique, and thermodynamic calculation based on Miedema's semi-empirical model has been used to clarify the nature of amorphisation in this binary alloy system. The transition composition from the hexagonal cubic packed structure to the amorphous (H/A) is about 19 at.%Mo when the Co-Mo thin films are deposited at room temperature (RT) under a working Ar pressure of 0.2 Pa and a deposition rate of about 0.7 Å/s, but increases up to about 23 at.%Mo when deposited at 300 °C. The calculated transition composition at RT based on the Miedema's model or the thermodynamically assessed parameters is 18.7 at.%Mo or 16.1 at.%Mo, respectively, well consistent with the experimental value of ~ 19.0 at.%Mo. Higher deposition rate and lower pressure shift the H/A transition composition to a higher Mo content.

本文言語English
ページ(範囲)2984-2987
ページ数4
ジャーナルThin Solid Films
517
9
DOI
出版ステータスPublished - 2009 3 2

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 表面および界面
  • 表面、皮膜および薄膜
  • 金属および合金
  • 材料化学

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