ACTA

Monte Carlo Investigation of Blume-Emery-Griffiths Model with Mixed Spins

M. Bourass^a, A. Zradba^a, A. Al-Rajhi^b, N. Hachem^a, R. Aharrouch^a, M. Madani^c, M. El Bouziani^a
^aTeam of Theoretical Physics, Laboratory L.P.M.C., Faculty of Sciences, Chouaib Doukkali University, El Jadida, Morocco
^bDepartment of Information Technologies, Faculty of Education and Applied Sciences, Hodeidah University, Raymah, Yemen
^cDepartment of Physics and Chemistry, CRMEF, Meknes, Morocco

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Using Monte Carlo simulation, we have investigated the phase diagrams and magnetic properties of a mixed spin-1 and spin-3/2 Blume-Emery-Griffiths model on a simple cubic lattice. First, the thermal variations of the magnetizations of the Blume-Capel model (Blume-Emery-Griffiths model with zero biquadratic coupling) as well as its phase diagram in the (temperature, crystal field) plane are plotted showing the second-order phase transitions and the compensation temperatures. Then, we have studied the effect of the introduction of a biquadratic coupling on the critical and compensation behaviours already observed in the Blume-Capel model.

DOI:10.12693/APhysPolA.141.47
topics: mixed spins, Blume-Emery-Griffiths, Monte Carlo, phase diagram