Coercivity and Interfacial Spin Clusters in Exchange Bias Systems
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概要
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In this paper the current state of knowledge of the magnetic structure interfaces in exchange biased systems are briefly reviewed. A conceptual model explaining the interface in terms of spin clusters that behave in a similar manner to fine particles displaying superparamagnetism is described. To test this concept IrMn/CoFe based exchange biased polycrystalline samples of median grain diameter 7.1, 7.2 and 7.8nm were sputtered and the temperature dependence of the coupling measured. Small changes in the AF grain diameter are reflected by large volume changes in the spin clusters and consequently the temperature dependence. In particular the variation of the coercivity with temperature affects the stability of the magnetization of the spin clusters.
- 公益社団法人 日本磁気学会の論文
公益社団法人 日本磁気学会 | 論文
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