The Effect of a Random Crystal-Field on the Mixed Ising Spins (1/2, 3/2)

• Authors: L. Bahmad , M. Benayad , A. Benyoussef , A. El Kenz
• Languages of publication: EN

Abstracts

EN

We study the magnetic properties of a mixed Ising ferrimagnetic system, in which the two interacting sublattices have spins σ,(±1/2) and spins S,(±3/2,±1/2) in the presence of a random crystal field, with the mean field approach. The results obtained, using mean field approach and Monte Carlo simulation, show the appearance of a new ferrimagnetic phase, namely the partly ferrimagnetic phase (m_{σ} = -1/2 , m_{S} = +1). Consequently, three topologically different types of phase diagrams have been given by mean field approach. The effect of increasing the exchange interaction parameter J, at very low temperature is also investigated.

Keywords

EN

05.50.+q; 75.10.Hk; 75.50.Gg

Discipline

• 75.50.Gg: Ferrimagnetics
• 75.10.Hk: Classical spin models
• 05.50.+q: Lattice theory and statistics (Ising, Potts, etc.)(see also 64.60.Cn Order-disorder transformations, and 75.10.Hk Classical spin models)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2011
• Volume: 119
• Issue: 6
• Pages: 740-746

Dates

published

2011-06

received

2010-10-22

(unknown)

2011-01-04

Contributors

author

L. Bahmad

• Faculté des Sciences, Département de Physique, Laboratoire de Magnétisme et Physique des Hautes Energies, B.P. 1014, Rabat, Morocco

author

M. Benayad

• Faculté des Sciences, Département de Physique, Laboratoire de Magnétisme et Physique des Hautes Energies, B.P. 1014, Rabat, Morocco

author

A. Benyoussef

• Faculté des Sciences, Département de Physique, Laboratoire de Magnétisme et Physique des Hautes Energies, B.P. 1014, Rabat, Morocco

author

A. El Kenz

• Faculté des Sciences, Département de Physique, Laboratoire de Magnétisme et Physique des Hautes Energies, B.P. 1014, Rabat, Morocco

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Identifiers

DOI

10.12693/APhysPolA.119.740