Existence of a dynamic compensation temperature of a mixed spin-2 and spin-5/2 Ising ferrimagnetic system in an oscillating field

摘要: The magnetic properties of a nonequilibrium mixed spin-2 and spin-5/2 Ising ferrimagnetic system with crystal-field interaction (D) in the presence time-varying field on hexagonal lattice are studied by using Glauber-type stochastic dynamics. model consists two interpenetrating sublattices sigma=2 S=5/2. Hamiltonian includes intersublattice, intrasublattice, interactions. intersublattice is considered antiferromagnetic to have simple but interesting system. set mean-field dynamic equations obtained employing Glauber transition rates. First, we investigate time variations average sublattice magnetizations find phases system, temperature dependence characterize nature (continuous or discontinuous) phase transitions obtain points. Then, study total magnetization compensation points as well determine type behavior. We also effect exchange couplings between nearest-neighbor pairs spins phenomenon present diagrams. According values parameters, paramagnetic, nonmagnetic, four different fundamental phases, seven temperature, N-type behavior Neel classification nomenclature exist A comparison made results available spin systems.