MAGNETIC-PROPERTIES OF RAPIDLY QUENCHED HIGH REMANENCE ZR ADDED SM-FE-N ISOTROPIC POWDERS

被引：28
|
作者：
YONEYAMA, T
YAMAMOTO, T
HIDAKA, T
机构：
[1] Materials Research Center, TDK Corporation, Narita-shi, Chiba-ken 286, 570-2, Aza-Matsugashita
来源：
APPLIED PHYSICS LETTERS | 1995年 / 67卷 / 21期
关键词：
D O I：
10.1063/1.115161
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The magnetic properties and microstructures of rapidly quenched Sm-Fe-N powders with low Sm contents and Zr and Co addition have been studied. High remanence values of 9.3 kG with high H-cJ values of 7-10 kOe were obtained for isotropic powders. The x-ray diffraction analysis and transmission electron microscopy (TEM) observation showed these alloy powders to consist of a nanoscale mixture with a SmFe7Nx phase with the TbCu7-type structure and alpha-Fe in the size range of 20-30 nm. Tt is presumed that the high remanence is due to the small crystal size and exchange coupling at interphase boundaries. (C) 1995 American Institute of Physics.
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收藏
页码：3197 / 3199
页数：3
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