Phase Diagrams to Finite Temperatures of an Ising-Type Ferrimagnet of 3/2 and 2 Spins: A Monte Carlo Investigation

The thermomagnetic behavior of a ferrimagnet configured in a bipartite square lattice, composed of Ising-type particles of spins-<inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$(2,3/2)$ </tex-math></inline-formula>, and subjected to different anisotropies under the effect of an applied external field is investigated using Monte Carlo simulations (MCS). The model presents interesting magnetic phenomena, such as compensation temperatures and discontinuous transitions in the finite temperature phase diagrams of the magnetization and magnetic susceptibility, when the single-ion anisotropies were varied. The influence of the crystal fields is also reflected in the hysteretic behavior of the ferrimagnet, with phenomena of multiple loops and superparamagnetism. Results were compared with previous investigations, finding that there is an agreement in the qualitative behavior of some phase diagrams.