The influence of the interface exchange coupling on the magnetization reversal process for a FePt/α-Fe/FePt tri-layer structure has been studied through a micromagnetic approach.The analytical formula of the nucleation field has been derived.It is found that the nucleation field increases as the interface coupling constant rises.Especially when the thickness of the soft layer is small,the influence of the exchange coupling on the nucleation field is significant.The angular distributions of the magnetization...
【英文摘要】
The influence of the interface exchange coupling on the magnetization reversal process for a FePt/α-Fe/FePt tri-layer structure has been studied through a micromagnetic approach.The analytical formula of the nucleation field has been derived.It is found that the nucleation field increases as the interface coupling constant rises.Especially when the thickness of the soft layer is small,the influence of the exchange coupling on the nucleation field is significant.The angular distributions of the magnetization...
【基金】
supported by the National Natural Science Foundation of China (Grant No. 10747007);
the Scientific Research Foundation for Returned Overseas Chinese Scholars,State Education Ministry
【更新日期】
2010-10-11
【分类号】
O482.5
【正文快照】
Nano-materials have attracted interest and been widely studied [1-17]. In 1991, Kneller and Hawing [1] proposed the concept of the exchange spring. Hard/soft composite magnetic materials, which combine merits of both materials,are recently regarded as the
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