Sm-Co-Cu-Ti high-temperature permanent magnets

被引：145

作者：

Zhou, J ^{[1
]}

Skomski, R

Chen, C

Hadjipanayis, GC

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

[3] Electron Energy Corp, Landisville, PA 17538 USA

[4] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 10期

关键词：

D O I：

10.1063/1.1290719

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A class of promising permanent-magnet materials with an appreciable high-temperature coercivity of 8.6 kOe at 500 degrees C is reported. The Sm-Co-Cu-Ti magnets are prepared by arc melting and require a suitable heat treatment. Magnetization measurements as a function of temperature and x-ray diffraction patterns indicate that the samples are two-phase mixtures of 2:17 and 1:5 structures. Depending on heat treatment and composition, some of the magnets exhibit a positive temperature coefficient of coercivity. The promising high-temperature behavior of the coercivity is ascribed to the temperature dependence of the domain-wall energy, which affects the curvature of the walls and the pinning behavior. (C) 2000 American Institute of Physics. [S0003-6951(00)02836-9].

引用

页码：1514 / 1516

页数：3

共 16 条

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