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
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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页码:3197 / 3199
页数:3
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