Effects of random fields on the phase diagram of Mn0.957 Zn0.043F2
- 1 March 1982
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 53 (3) , 1931-1933
- https://doi.org/10.1063/1.330672
Abstract
The phase diagram of Mn0.957Zn0.043F2 was measured in magnetic fields H↘ up to 175 kOe, directed along the easy axis. The para‐antiferro transition, at T∥C(H), shows an increased roundling at finite H. At low H, the slope −dT∥Cd(H2) is considerably larger than predicted by mean field theory. The paraspinflop boundary exhibits a much larger ’’bulge’’ than in pure MnF2. All these features are attributed to random fields. Several discrepancies from early predictions for the effects of random fields are noted, and are attributed to the absence of a genuine order‐disorder transition on the line T∥C (except at H = 0).This publication has 17 references indexed in Scilit:
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