THE CRYSTAL-STRUCTURE AND MAGNETIC-PROPERTIES OF R2FE17CX (X = 1.5 AND 2.0) PREPARED BY THE MELT-SPINNING METHOD

被引：16

作者：

CAO, L

KONG, LS

SHEN, BG

机构：

[1] State Key Lab. of Magnetism, Inst. of Phys., Chinese Acad. of Sci., Beijing

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1993年 / 5卷 / 13期

关键词：

D O I：

10.1088/0953-8984/5/13/015

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have successfully prepared the carbides R2Fe17Cx (R = Y, Gd, Th, Dy, Ho and Er) with a high carbon content x = 1.5 and 2.0 by the melt-spinning method. The carbides have 3 single rhombohedral Th2Zn17 structure phase and are highly stable to at least 1100-degrees-C. The Curie temperatures T(C) are raised enormously and the saturation magnetizations change little upon carbonation. The average enhancements of T(C) are about 220 K for R2Fe17C1.5 and 265 K for R2Fe17C2.0. The volume dependence of the exchange interaction has been discussed. The Curie temperatures are analysed in terms of a mean-field model. The spin reorientation is observed to be 133 K for Er2Fe17C1.5 and 141 K for Er2Fe17C2.0.

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页码：2001 / 2008

页数：8

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