Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 531, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.physa.2019.121738
Keywords
Ferrimagnetic model; Spin compensation temperature; Critical temperature; First order behavior
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Funding
- Universidad del Sinu, Colombia [891.000.692-1]
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The critical, first order, and spin compensation behaviors of a ferrimagnetic [sing system, consisting of spins S = 3/2 and Q = 5/2 alternating on a square lattice, have been studied by Monte Carlo (MC) simulations and Mean-Field Theory (MF). The system is defined by a Hamiltonian (H) that contains ferromagnetic next-nearest-neighbors interactions between S spins (J(2)') and Q spins (J(3)'), as well as external magnetic field (h') and anisotropy (D-1', D-2') interactions. The effects of D-1' crystal and h' magnetic fields on the critical, double first order transition, and compensation phenomena are analyzed in detail. We found that the existence of a double first order phase transition depends on the temperature and the strength of h'. (C) 2019 Published by Elsevier B.V.
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