Monte Carlo Investigation of Blume-Emery-Griffiths Model with Mixed Spins

Using Monte Carlo simulation, we have investigated the phase diagrams and magnetic properties of a mixed spin-1 and spin-3/2 Blume-Emery-Griffiths model on a simple cubic lattice. First, the thermal variations of the magnetizations of the Blume-Capel model (Blume-Emery-Griffiths model with zero biquadratic coupling) as well as its phase diagram in the (temperature, crystal field) plane are plotted showing the second-order phase transitions and the compensation temperatures. Then, we have studied the effect of the introduction of a biquadratic coupling on the critical and compensation behaviours already observed in the Blume-Capel model.

Automated summary

Using Monte Carlo simulation, the phase diagrams and magnetic properties of a mixed spin-1 and spin-3/2 Blume-Emery-Griffiths model on a simple cubic lattice were investigated. The thermal variations of the magnetizations of the Blume-Capel model and its phase diagram were plotted, showing second-order phase transitions and compensation temperatures. The effect of introducing a biquadratic coupling on the previously observed critical and compensation behaviors in the Blume-Capel model was studied.