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

页码：4815 / 4817

页数：3

共 7 条

[1] DETERMINATION OF BLOCH WALL ENERGY OF UNIAXIAL FERROMAGNETS [J].