High-temperature magnetic properties of mechanically alloyed SmCo5 and YCo5 magnets

被引：42

作者：

Al-Omari, IA ^{[1
]}

Skomski, R

Thomas, RA

Leslie-Pelecky, D

Sellmyer, DJ

机构：

[1] Univ Nebraska, Dept Phys & Astron, Lincoln, NE 68588 USA

[2] Univ Nebraska, Ctr Mat Res & Anal, Lincoln, NE 68588 USA

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2001年 / 37卷 / 04期

关键词：

anisotropy; coercivity; finite-temperature magnetism; permanent magnets;

D O I：

10.1109/20.951226

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：

The high-temperature coercivity of mechanically alloyed and subsequently annealed RCo5 (R = Sm and Y) is studied. The annealed materials have the hexagonal CaCu5 structure with 2:17 (or 1:7) regions as a minor phase. High-temperature magnetic measurements show that the coercivities of materials decrease with increasing temperature from room-temperature to 873 K, but that the temperature coefficient of the coercivity of YCo5 is much smaller than that of SMCo5. This behavior is explained in terms of the intrinsic temperature variation of the magnetocrystalline anisotropy.

引用

页码：2534 / 2536

页数：3

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