Effect of magnetic properties of soft magnetic phase on the energy product of an exchange-spring magnet

doi:10.1088/1674-1056/23/2/027501

Abstract Research on exchange-spring magnets has focused on the microstructures of the materials. However, research has seldom been concerned with the effect of magnetic properties of soft magnetic phase on the energy product of an exchange-spring magnet. In this paper, a simple one-dimensional numerical simulation is used to investigate this effect in a Nd₂Fe₁₄B-based exchange-spring magnet. The results reveal that the larger the anisotropy constant, the stronger the exchange coupling, and the higher the magnetization of the soft magnetic phase, the larger the energy product of an exchange-spring magnet. This provides evidence for choosing a soft magnetic phase in an exchange-spring magnet.

Keywords: exchange-spring magnets numerical simulation

Received: 30 April 2013
Revised: 13 July 2013
Accepted manuscript online:

PACS:	75.30.Cr	(Saturation moments and magnetic susceptibilities)
	75.30.Gw	(Magnetic anisotropy)
	75.50.Ww	(Permanent magnets)
	75.40.Mg	(Numerical simulation studies)

Fund: Project supported by the Scientific Research Foundation for the Returned Overseas Chinese Scholars, Ministry of High Education of China, the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20090006120019), the Engineering Research Institute Foundation of USTB (Grant No. YJ2012-006), and the Fundamental Research Funds for the Central Universities, China (Grant No. FRF-BR-11-044B).

Corresponding Authors: Yin Jin-Hua
E-mail: yinjinhua@ustb.edu.cn

About author: 75.30.Cr; 75.30.Gw; 75.50.Ww; 75.40.Mg

Cite this article:

Jia Li-Ying (贾立颖), Yin Jin-Hua (阴津华), Ma Xing-Qiao (马星桥) Effect of magnetic properties of soft magnetic phase on the energy product of an exchange-spring magnet 2014 Chin. Phys. B 23 027501

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Effect of magnetic properties of soft magnetic phase on the energy product of an exchange-spring magnet

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