Reentrant phase transitions in the Blume-Emery-Griffiths model on a simple cubic lattice: The two-particle cluster approximation - art. no. 172407

摘要

The two-particle cluster approximation is applied to study the reentrant and double reentrant behaviors of the spin-1 Ising model with nearest-neighbor bilinear and biquadratic exchange interactions and single-ion anisotropy on a simple cubic lattice. The phase diagrams are constructed and the temperature dependences of dipolar and quadrupolar moments are calculated at various values of model parameters (at those when it suffices to consider a one-sublattice problem). [References: 22]