LATTICE DISTORTION, ELASTICITY AND ANTIFERROMAGNETIC ORDER IN COPPER-MANGANESE ALLOYS

被引：49
作者：
MAKHURANE, P
GAUNT, P
机构：
来源：
JOURNAL OF PHYSICS PART C SOLID STATE PHYSICS | 1969年 / 2卷 / 06期
关键词：
D O I：
10.1088/0022-3719/2/6/304
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Alloys of manganese containing 10-20% of copper undergo a tetragonal distortion on cooling through the Néel temperature. This distortion and an anomalous volume expansion have been measured and shown to be proportional to the square of the long-range magnetic order parameter. A simple Weiss molecular field model with strain-dependent exchange is shown to be consistent with these results. The model also predicts anomalies in the elasticity below the Néel temperature which accord well with experiment.
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页码：959 / +
页数：1
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