Phase Transitions in a Magnetic Transverse Ising Superlattice of Two Ferromagnet Materials with Spins μ=1/2 and S=1

N. El Aouad ； B. Laaboudi ； M. Saber ； M. Kerouad ； A. Benaboud

《Chinese Journal of Physics》 38卷4期 (2000/08) Pp. 863-881

並列摘要

Within the framework of the effective field theory, based on the use of a probability distribution technique that correctly accounts for the single site kinematic relations, we examine the phase transitions of a magnetic transverse Ising superlattice consisting of two ferromagnet Ising materials with spins μ = 1/2 and S = 1, respectively, on a simple cubic structure. The critical temperature of the system is studied as a function of the interface coupling, the thickness of the constituents in a unit cell. A critical value of the interface exchange interaction above which the interface magnetism appears is found. The effects of the transverse field on the critical behavior of the system are also investigated.