Phase diagram of the mixed-spin (1,3/2) Ising ferrimagnetic system with two different anisotropies

D. C. da Silva (), A. S. de Arruda () and M. Godoy
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D. C. da Silva: Instituto de Física, Universidade Federal de Mato Grosso, 78060-900 Cuiabá, MT, Brazil
A. S. de Arruda: Instituto de Física, Universidade Federal de Mato Grosso, 78060-900 Cuiabá, MT, Brazil
M. Godoy: Instituto de Física, Universidade Federal de Mato Grosso, 78060-900 Cuiabá, MT, Brazil

International Journal of Modern Physics C (IJMPC), 2020, vol. 31, issue 09, 1-15

Abstract: In this work, we have performed Monte Carlo simulations to study phase transitions in a mixed spin-1 and spin-3/2 Ising ferrimagnetic system on the square and cubic lattices and with two different single-ion anisotropies. These lattices are divided in two interpenetrating sublattices with spins SA=1 (states ±1 and 0) on the sublattice A and SB=3∕2 (states ±3∕2, ±1∕2) on the sublattice B. We have used single-ion anisotropies DA and DB acting on the sites of the sublattice A and B, respectively. We have determined the phase diagrams of the model in the temperature T vs. the single-ion anisotropies strength DA and DB plane and shown that the system exhibits both second- and first-order phase transitions. This system also displays compensation points for some values of the anisotropies.

Keywords: Tricritical behavior; Monte Carlo simulation; phase diagram; compensation temperature (search for similar items in EconPapers)
Date: 2020
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DOI: 10.1142/S0129183120501247

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