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Benayad M.R.,Laboratoire Of Magntisme Et Physique Des Hautes Energies | Benyoussef A.,Laboratoire Of Magntisme Et Physique Des Hautes Energies | Benyoussef A.,Hassan II Academy of science and Technologies | Benyoussef A.,Institute of Nanomaterials and Nanotechnology | El Kenz A.,Laboratoire Of Magntisme Et Physique Des Hautes Energies
Physica A: Statistical Mechanics and its Applications | Year: 2012

The effect of random crystal-field on the magnetic properties of the semi-infinite system is investigated by the use of the mean field approximation. In this system, the sites of the surface and bulk are occupied by spin- 12 and spin-1, respectively. The appearance of the partly ferromagnetic phase, in bulk, gives rise to different types of topology of phase diagrams. The system exhibits tricritical and multicritical points. © 2012 Elsevier B.V. All rights reserved. Source

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