Critical Point of the Cubic Antiferromagnet RbMnF3
- 1 March 1966
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 37 (3) , 1122-1123
- https://doi.org/10.1063/1.1708361
Abstract
We have studied the critical region of RbMnF3 (TN=83°K) using specific heat, x‐ray, and strain‐gauge measurements. Because RbMnF3 so closely resembles an ideal Heisenberg antiferromagnet, experimental results may be especially relevant to theoretical predictions. The specific heat is found to diverge logarithmically over three decades for TN, but only over two decades for TN. No distortion from cubic symmetry is detectable in the range 20° to 300°K. Finally a remarkably small thermal expansion anomaly is found in a narrow region near TN.This publication has 3 references indexed in Scilit:
- Specific-Heat Singularity in MnPhysical Review Letters, 1965
- Specific Heat of a Gas Near the Critical PointPhysical Review B, 1964
- Correlation Functions and the Critical Region of Simple FluidsJournal of Mathematical Physics, 1964