Abstract
This work aims to investigate the thermodynamic properties and magnetocaloric effect (MCE) of spins - 1/2 square lattice using Monte Carlo simulation. The considered Ising model is parameterized by the couplings J, [Formula: see text] and [Formula: see text]; where J is the ferromagnetic exchange interaction between first nearest-neighbor spins, a is the anisotropic parameter and [Formula: see text] is the ferromagnetic exchange interaction between second nearest-neighbor spins. Monte Carlo simulation under Metropolis algorithm allows us to study some thermodynamic properties and MCE of spins - 1/2 square lattice. The discussion of the obtained results allowed us to specify the conditions which can enrich the MCE in spins - 1/2 square lattice. The two-dimensional anisotropic Ising model presents clarifying the critical point of the ferromagnetic–paramagnetic transition, and we have shown that the maximum entropy variation increases when it occurs at the ferromagnetic–paramagnetic transition temperature regardless of the intensity of the applied magnetic field and the values of “a” and “b”.
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