| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1223 - C8-1224 | |
| DOI | https://doi.org/10.1051/jphyscol:19888554 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1223-C8-1224
DOI: 10.1051/jphyscol:19888554
1 Departamento de Física, Universidad Simón Bolivar, Apartado 89000, Caracas 1080A, Venezuala
2 Centro de Física, Instituto Venezolano de Investigaciones Científicas, Apartado 21827, Caracas 1020A, Venezuela
J. Phys. Colloques 49 (1988) C8-1223-C8-1224
DOI: 10.1051/jphyscol:19888554
COMPARISON OF CROSS-OVER EFFECTS FOR WEAKLY DILUTED ISING ANTIFERROMAGNETS AND FERROMAGNETS
Gloria M. Buendia1 et Julio F. Fernandez21 Departamento de Física, Universidad Simón Bolivar, Apartado 89000, Caracas 1080A, Venezuala
2 Centro de Física, Instituto Venezolano de Investigaciones Científicas, Apartado 21827, Caracas 1020A, Venezuela
Abstract
We present a Monte Carlo calculation of the effect of small site or bond dilution in a nn/nnn Ising model in two dimensions. Whereas the Harris criterion for the cross-over exponent, φ = α, is satisfied by the ferromagnetic system, the calculated value of φ for the antiferromagnet is consistent with φ = γ - 2β.