| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1267 - C8-1268 | |
| DOI | https://doi.org/10.1051/jphyscol:19888576 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1267-C8-1268
DOI: 10.1051/jphyscol:19888576
1 Departamento de Física, Universidade Federal de Pernambuco, 50739, Recife, PE, Brazil
2 One leave : Departamento de Física, Universidade Federal da Paraíba, 58100, Campina Grande, PB, Brazil
3 Instituto de Física, Universidade de Sao Paulo, 01000, Sao Paulo, SP, Brazil
J. Phys. Colloques 49 (1988) C8-1267-C8-1268
DOI: 10.1051/jphyscol:19888576
DYNAMIC SCALING IN THE ISING SPIN GLASS Fe0.25Zn0.75F2
S. M. Rezende1, F. C. Montenegro1, 2, M. D. Coutinho-Filho1, C. C. Becerra3 et A. Paduan-Filho31 Departamento de Física, Universidade Federal de Pernambuco, 50739, Recife, PE, Brazil
2 One leave : Departamento de Física, Universidade Federal da Paraíba, 58100, Campina Grande, PB, Brazil
3 Instituto de Física, Universidade de Sao Paulo, 01000, Sao Paulo, SP, Brazil
Abstract
The ac parallel susceptibility χ' (ω, T) was measured in FexZn1-xF2 with x = 0.25 and 0.10. χ' (ω, T) exhibits all features of a canonical spin glass : it has a peak in T which reduces in amplitude and shifts to higher T as ω increases ; as H0 increases the peak is reduced but does not shift in T. A dynamic scaling analysis for the 0.25 sample yields β ≈ 1 and zv ≈ 7.5, exponents appropriate for an Ising spin glass.