Lattice distortion, elasticity and antiferromagnetic order in copper-manganese alloys
- 1 June 1969
- journal article
- Published by IOP Publishing in Journal of Physics C: Solid State Physics
- Vol. 2 (6) , 959-965
- https://doi.org/10.1088/0022-3719/2/6/304
Abstract
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.Keywords
This publication has 3 references indexed in Scilit:
- Magnetic Disorder as a First-Order Phase TransformationPhysical Review B, 1962
- Elasticity and antiferromagnetism of metallic antiferromagneticsJournal de Physique et le Radium, 1959
- The antiferromagnetism of manganese copper alloysProceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1957