A new model for the coercivity mechanism of Sm-2(Co,Fe,Cu,Zr)17 magnets

被引：49
|
作者：
Katter, M [1 ]
Weber, J [1 ]
Assmus, W [1 ]
Schrey, P [1 ]
Rodewald, W [1 ]
机构：
[1] UNIV FRANKFURT,INST PHYS,D-60054 FRANKFURT,GERMANY
来源：
IEEE TRANSACTIONS ON MAGNETICS | 1996年 / 32卷 / 05期
关键词：
D O I：
10.1109/20.539161
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A two-dimensional model for the coercivity mechanism of Sm-2(Co,Fe,Cu,Zr)(17) magnets is proposed. The high coercivities of fully heat-treated magnets (> 20 kA/cm) result from pinning sites which are formed by the intersections of the Zr-rich platelet phase (Z-phase) and the Cu-rich SmCo5 (1/5) boundary phase, The pinning strength of this site is assumed to be a result of the large difference between the domain wall energies of the 1/5 phase and the Z-phase. The domain wall energies of almost single phase samples of the Z-phase hare been determined by magnetic measurements and by quantitative analysis of domain patterns. The small domain wall energy of the Z-phase of 4 - 11 mJ/m(2) supports the presented model.
引用
收藏
页码：4815 / 4817
页数：3
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