6533b820fe1ef96bd127a464
RESEARCH PRODUCT
Model calculations of phase diagrams of magnetic alloys on the body-centered-cubic lattice.
Kurt BinderBurkhard Dünwegsubject
PhysicsFerromagnetismCondensed matter physicsLattice (order)Exchange interactionMonte Carlo methodTetrahedronMineralogyBinary numberCubic crystal systemPhase diagramdescription
We treat a model for a binary (AB) alloy, where species A is magnetic (Ising spin σi = ± 1) while species B is not, and repulsive interactions are assumed between first and second neighbors of the same kind, in addition to a nearest-neighbor ferromagnetic exchange interaction. Both the mean-field approximation, the cluster variation (CV) method in the tetrahedron approximation and the Monte Carlo (MC) method are applied; comparing the phase diagrams obtained by the various approximations their accuracy is tested. It is shown that the CV method is in rather close agreement with the MC method for the present problem.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1987-11-01 | Physical review. B, Condensed matter |