MAGNETIC-PROPERTIES OF A NEW SERIES OF RARE-EARTH IRON NITRIDES - R2FE17NY (Y-APPROXIMATELY-2.6)

被引：340

作者：

SUN, H

COEY, JMD

OTANI, Y

HURLEY, DPF

机构：

[1] Dept. of Pure and Appl. Phys., Trinity Coll., Dublin

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 30期

关键词：

D O I：

10.1088/0953-8984/2/30/013

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A series of interstitial ternary nitrides R2Fe 17Ny with 2.3<y<2.9 has been prepared for R=Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er, Tm, Lu and Y. The nitrides have structures related to those of Th2Zn17 or Th2Ni17, but the unit cell volumes are 6-7% greater, and the magnetic ordering temperatures some 400 K higher than for the 2:17 parent compounds. The Fe-Fe exchange interactions are more than doubled by nitrogenation, whereas the R-Fe exchange interactions are little changed. All compounds exhibit easy-plane anisotropy at room temperature, except for Sm2Fe17Ny, which is easy-axis.

引用

页码：6465 / 6470

页数：6

共 16 条

[1] EVIDENCE IN RARE-EARTH (R)-TRANSITION METAL (M) INTERMETALLICS FOR A SYSTEMATIC DEPENDENCE OF R-M EXCHANGE INTERACTIONS ON THE NATURE OF THE R-ATOM [J].