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Mixed Spin‐(3/2,7/2) Ising‐Type Ferrimagnet: Monte Carlo–Mean Field Treatment
Author(s) -
De La Espriella Nicolás,
Karimou Mounirou,
Buendía Gloria M.
Publication year - 2021
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.202000536
Subject(s) - condensed matter physics , ferrimagnetism , ising model , antiferromagnetism , spins , ferromagnetism , monte carlo method , square lattice , physics , mean field theory , k nearest neighbors algorithm , exchange interaction , hamiltonian (control theory) , statistical physics , magnetic field , magnetization , quantum mechanics , mathematics , statistics , computer science , mathematical optimization , artificial intelligence
Mean field and Monte Carlo simulations techniques are applied to study the behavior of a mixed Ising spin model in a square lattice where spins 7/2 are located in alternating sites with spins 3/2. There is an antiferromagnetic interaction between nearest neighbors, ferromagnetic interactions between next‐nearest neighbors, crystal fields, and a magnetic external field. The role of the different interactions in the magnetic behavior of the system is explored. It is found that depending on the combination of parameters in the Hamiltonian this system presents multiple hysteresis loops, exchange bias, compensation temperatures, and discontinuous magnetizations. The results are compared with previous studies that do not include the ferromagnetic next‐nearest neighbor interactions and found that they can have a strong effect in the magnetic behavior of the system.