COERCIVITY MECHANISM OF MELT-SPUN SM(FE11TI)

被引：16

作者：

OTANI, Y

LI, HS

COEY, JMD

机构：

[1] Department of Pure and Applied Physics, Trinity College

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1990年 / 26卷 / 05期

关键词：

D O I：

10.1109/20.104829

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：

Hysteresis loops of randomly oriented grains with uniaxial anisotropy were computed on the basis of an array of 27 Wigner Seitz cells representing crystallites which interact by exchange coupling at the grain boundaries. The computed coercivity increases linearly with increasing interatomic exchange. Using the experimental anisotropy and exchange parameters for Sm(Fel1 Ti), we found u0hc=1.2T in good agreement with results on melt-spun ribbon. The main insight is that strong intergrain coupling is beneficial for developing coercivity in nanocrystalline alloys with uniaxial anisotropy. © 1990 IEEE

引用

页码：2658 / 2660

页数：3