| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1701 - C8-1702 | |
| DOI | https://doi.org/10.1051/jphyscol:19888772 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1701-C8-1702
DOI: 10.1051/jphyscol:19888772
Instituto de Fisica "Gleb Wataghin", Universidade Estadual de Campinas, Caixa Postal 6165, 13.081 Campinas, São Paulo, Brazil
J. Phys. Colloques 49 (1988) C8-1701-C8-1702
DOI: 10.1051/jphyscol:19888772
FINITE-SIZE EFFECTS IN ULTRATHIN MAGNETIC LAYERS
U. Gummich, G. G. Cabrera et C. E. T. Gonçalves da SilvaInstituto de Fisica "Gleb Wataghin", Universidade Estadual de Campinas, Caixa Postal 6165, 13.081 Campinas, São Paulo, Brazil
Abstract
We study thin ferro and antiferromagnetic films for the Heisenberg model using a modified version of the Onsager reaction field approximation adapted for finite-size layered systems. No phase transition is obtained for the finite system, but spin-spin correlations are enhanced when the number of layers increases.