| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1203 - C8-1204 | |
| DOI | https://doi.org/10.1051/jphyscol:19888546 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1203-C8-1204
DOI: 10.1051/jphyscol:19888546
Physikalisches Institut der Universität Karlsruhe, Engesserstraße 7, D-7500 Karlsruhe 1, F.R.G.
J. Phys. Colloques 49 (1988) C8-1203-C8-1204
DOI: 10.1051/jphyscol:19888546
CRITICAL EXPONENTS OF THE SPECIFIC HEAT OF EuxSr1-xS
J. Wosnitza et H. v. LöhneysenPhysikalisches Institut der Universität Karlsruhe, Engesserstraße 7, D-7500 Karlsruhe 1, F.R.G.
Abstract
The critical exponent α of the diluted Heisenberg ferromagnet EuxSr1-xS, derived directly from specific heat data, decreases from the nearly pure Heisenberg value α = - 0.14 for EuS to α = - 0.48 for Eu0.7Sr0.3S. These results are in qualitative agreement with theoretical predictions of concentration-dependent effective exponents of strongly disordered magnetic materials.