| Issue |
J. Phys. Colloques
Volume 49, Number C8, Décembre 1988
Proceedings of the International Conference on Magnetism
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|---|---|---|
| Page(s) | C8-1205 - C8-1206 | |
| DOI | https://doi.org/10.1051/jphyscol:19888547 | |
Proceedings of the International Conference on Magnetism
J. Phys. Colloques 49 (1988) C8-1205-C8-1206
DOI: 10.1051/jphyscol:19888547
1 Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011 U.S.A.
2 Research Center of Crete, University of Crete, Heraklio, Crete, Greece
3 Corporate Research Science Laboratory, Exxon Research and Engineering Company, Annandale, NJ 08801 U.S.A.
J. Phys. Colloques 49 (1988) C8-1205-C8-1206
DOI: 10.1051/jphyscol:19888547
DIMENSIONAL-CROSSOVER STUDIES OF RANDOMLY DILUTED FERROMAGNETIC THIN FILMS
C. M. Soukoulis1, 2, Gary S. Grest3 et M. Velgakis21 Ames Laboratory and Department of Physics, Iowa State University, Ames, Iowa 50011 U.S.A.
2 Research Center of Crete, University of Crete, Heraklio, Crete, Greece
3 Corporate Research Science Laboratory, Exxon Research and Engineering Company, Annandale, NJ 08801 U.S.A.
Abstract
Using Monte Carlo simulations, we studied the Ising model with random, nonmagnetic impurities on an N x N x L simple cubic lattice. Systems with ferromagnetic nearest-neighbor coupling and periodic boundary conditions in the x - y plane were studied for N = 40 and 1 ≤ L < 40 for several values of p, the concentration of magnetic ions. The transition temperature Tc decreased monotically to zero as the concentration p decreased towards the percolation threshold for the width L. The shift of Tc was consistent with L-λ, where λ is 1.56 in the critical region.