THE MAGNETIC-STRUCTURE OF HOMN2

被引：42

作者：

RITTER, C ^{[1
]}

CYWINSKI, R ^{[1
]}

KILCOYNE, SH ^{[1
]}

MONDAL, S ^{[1
]}

机构：

[1] UNIV READING,JJ THOMSON PHYS LAB,READING RG6 2AF,BERKS,ENGLAND

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1992年 / 4卷 / 06期

关键词：

D O I：

10.1088/0953-8984/4/6/021

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The crystal and magnetic structure of the C15 Laves phase of HoMn2 was restudied using powder neutron diffraction. High-resolution spectra showed HoMn2 to remain cubic F d3mBAR below the magnetic transition temperature. The Ho spins assume a spin-canted ferromagnetic structure with 7.9-mu(B) per Ho atom. One out of four Mn sites carries a moment of 0.6-mu(B) induced by the strongly polarizing magnetic environment of ferromagnetically coupled near-neighbour (111) planes of rare-earth spins. A small thermal expansion anomaly accompanied by a spin reorientation is found at the Curie point of 25 K; the Neel point of the system lies at 31 K.

引用

页码：1559 / 1566

页数：8

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