| Numéro |
J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988
Proceedings of the International Conference on Magnetism
|
|
|---|---|---|
| Page(s) | C8-1241 - C8-1242 | |
| DOI | https://doi.org/10.1051/jphyscol:19888563 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1241-C8-1242
DOI: 10.1051/jphyscol:19888563
1 Physics Department, University of California, Santa Barbara, California, 93106, U.S.A.
2 Centro Atómico Bariloche, (8400) S. C. Bariloche, Río Negro, Argentina.
3 Departamento de Fisica, Universidade Federal de Pernambuco, 5000 Recife, Brasil
J. Phys. Colloques 49 (1988) C8-1241-C8-1242
DOI: 10.1051/jphyscol:19888563
FIELD-INDUCED ANOMALOUS DILATION IN FexZn1-xF2
C. A. Ramos1, 2, A. R. King1, V. Jaccarino1 et S. M. Rezende31 Physics Department, University of California, Santa Barbara, California, 93106, U.S.A.
2 Centro Atómico Bariloche, (8400) S. C. Bariloche, Río Negro, Argentina.
3 Departamento de Fisica, Universidade Federal de Pernambuco, 5000 Recife, Brasil
Abstract
Dilation and capacitance measurements of the inverse piezomagnetic effect in FexZn1-xF2 (x = 0.46 and 1) exhibit a linear dependence with H and a proportionality to the sublattice magnetization, m ~ tβwith β = 0.33(2) for FeF2. For Fe0.46Zn0.54F2 a crossover is observed from random exchange (β = 0.35 (1)) to random field (-β ≤ 1/8) with increasing H.