Magnetic properties and microstructure of graded Fe/FePt films

被引：30

作者：

Tsai, Jai-Lin ^{[1
]}

Tzeng, Hsin-Te ^{[1
]}

Liu, Bing-Fong ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Dept Mat Sci & Engn, Taichung 402, Taiwan

来源：

JOURNAL OF APPLIED PHYSICS | 2010年 / 107卷 / 11期

关键词：

annealing; coercive force; crystal microstructure; interface magnetism; iron; iron alloys; magnetic anisotropy; magnetic structure; magnetic thin films; metallic thin films; platinum alloys; remanence; COMPOSITE MEDIA; FEPT;

D O I：

10.1063/1.3446198

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A soft/hard Fe/FePt bilayer with perpendicular magnetization was prepared on a glass substrate. Annealed Fe/FePt film allowed modification of the Fe/FePt sharp interface to Fe/(Fe-rich FePt)/FePt graded interface with rigid magnetization due to the nanoscale soft/hard interface coupling. The magnetization was reversed at a single switching field and interpreted by the two-spin model. When the annealed temperature of the Fe/FePt film increased, the remanence magnetization decreased continuously but the out-of-plane coercivity increased obviously at 600-700 degrees C which was interpreted by the graded magnetic anisotropy. The coercivity can be tuning in the exchange coupled composite film. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3446198]

引用

页数：5

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