中国物理B ›› 2014, Vol. 23 ›› Issue (2): 27501-027501.doi: 10.1088/1674-1056/23/2/027501

• CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES • 上一篇    下一篇

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

贾立颖, 阴津华, 马星桥   

  1. Department of Physics, University of Science and Technology Beijing (USTB), Beijing 100083, China
  • 收稿日期:2013-04-30 修回日期:2013-07-13 出版日期:2013-12-12 发布日期:2013-12-12
  • 基金资助:
    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).

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

Jia Li-Ying (贾立颖), Yin Jin-Hua (阴津华), Ma Xing-Qiao (马星桥)   

  1. Department of Physics, University of Science and Technology Beijing (USTB), Beijing 100083, China
  • Received:2013-04-30 Revised:2013-07-13 Online:2013-12-12 Published:2013-12-12
  • Contact: Yin Jin-Hua E-mail:yinjinhua@ustb.edu.cn
  • About author:75.30.Cr; 75.30.Gw; 75.50.Ww; 75.40.Mg
  • Supported by:
    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).

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摘要： 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.

关键词: exchange-spring magnets, numerical simulation

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.

Key words: exchange-spring magnets, numerical simulation

中图分类号:  (Saturation moments and magnetic susceptibilities)

  • 75.30.Cr
75.30.Gw (Magnetic anisotropy) 75.50.Ww (Permanent magnets) 75.40.Mg (Numerical simulation studies)