Anisotropic nanocomposite soft/hard multilayer magnets

doi:10.1088/1674-1056/26/11/117502

Abstract

Experimental and theoretical researches on nanostructured exchange coupled magnets have been carried out since about 1988.Here,we review the structure and magnetic properties of the anisotropic nanocomposite soft/hard multilayer magnets including some new results and phenomena from an experimental point of view.According to the different component of the oriented hard phase in the nanocomposite soft/hard multilayer magnets,three types of magnets will be discussed:1) anisotropic Nd₂Fe₁₄B based nanocomposite multilayer magnets,2) anisotropic SmCo₅ based nanocomposite multilayer magnets,and 3) anisotropic rare-earth free based nanocomposite multilayer magnets.For each of them,the formation of the oriented hard phase,exchange coupling,coercivity mechanism,and magnetic properties of the corresponding anisotropic nanocomposite multilayer magnets are briefly reviewed,and then the prospect of realization of bulk magnets on new results of anisotropic nanocomposite multilayer magnets will be carried out.

Keywords: anisotropic multilayer magnets exchange coupling effective interaction length coercivity mechanism

Received: 23 August 2017
Revised: 30 September 2017
Accepted manuscript online:

PACS:

75.50.Bb

(Fe and its alloys)

Fund:

Project supported by the State Key Project of Research and Development of China (Grant No.2017YFA0206302),the National Nature Science Foundation of China (Grant Nos.51590883,51331006,and 51471167),and the Chinese Academy of Sciences (Grant No.KJZD-EW-M05-3).

Corresponding Authors: Zhidong Zhang
E-mail: zdzhang@imr.ac.cn

Cite this article:

Wei Liu(刘伟), Zhidong Zhang(张志东) Anisotropic nanocomposite soft/hard multilayer magnets 2017 Chin. Phys. B 26 117502

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