Ground state phase diagrams for the mixed Ising 2 and 5/2 spin model

摘要: Abstract We investigate the behavior of ground state phase diagrams a mixed Ising spins model on bipartite square lattice S i A = 2 and σ j B 5 / . The proposed Hamiltonian includes coupling to first second neighbors, crystal field interactions between sublattices. In diagrams, according combination parameters in Hamiltonian, multiphase points, disordered regions, various structures are presented. Phase useful check reliability numerical results for at finite temperature allow exploring regions where important magnetic behaviors could arise.