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Using Monte Carlo simulations, magnetic properties of the ferromagnetic nanoparticles of Ising spin-1 are investigated in the framework of the Ising model. The system is considered to have a Rubik’s cube structure composed of nanocubes having an equivalent exchange coupling, while, between adjacent nanocubes, the exchange coupling is assumed to vary. Both size effects and system parameters’ influence on phase diagrams of the nanosystem are studied. Thus, the magnetic properties of the system such as the critical temperature, the magnetization, and the coercive field are computed. [ABSTRACT FROM AUTHOR]

We aim in this research paper to investigate and determine the magnetic properties of the simple perovskite PbVO by determining all the stable phases and analyzing and discussing the ground phase diagrams as a first step. As the second one, we established the magnetic properties of the studied compound employing a Monte Carlo simulation method within the framework of the Ising model to further the investigation. As a result of the employment of MCS, we succeed to determine the critical temperature, which is deduced by studying the magnetization, the susceptibility, and the specific heat. Then, comparing the previous experimental results with our theoretical obtained results, we found a good agreement between them. Also, the coupling effect on the transition temperature was shown. Finally, we analyzed the critical behaviors. [ABSTRACT FROM AUTHOR]