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]
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页数：5
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