Size and shape dependence of the exchange-bias field in exchange-coupled ferrimagnetic bilayers

被引：20
|
作者：
Ziese, M
Höhne, R
Bollero, A
Semmelhack, HC
Esquinazi, P
Zimmer, K
机构：
[1] Univ Leipzig, Div Superconduct & Magnetism, D-04103 Leipzig, Germany
[2] Inst Surface Modificat, D-04318 Leipzig, Germany
来源：
EUROPEAN PHYSICAL JOURNAL B | 2005年 / 45卷 / 02期
关键词：
D O I：
10.1140/epjb/e2005-00177-4
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Exchange biasing was studied in an exchange-spring system consisting of two ferrimagnetic films with different coercivity. Magnetite and Co-Fe ferrite were chosen as the soft and hard magnetic bilayer components, respectively. The samples were epitaxially grown on MgO single crystal substrates by pulsed laser deposition. The exchange-bias field was investigated as a function of system size and shape, magnetic field direction and magnetization reversal in the hard layer. A clear dependence of the exchange-bias field on the sample size and shape was found. This was attributed to an interplay between exchange and dipolar energies. Micromagnetic simulations agree with the experimental results.
引用
收藏
页码：223 / 230
页数：8
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