Phase transitions in a magnetic transverse Ising superlattice of two ferromagnet materials with spins mu=1/2 and S=1

Citation
N. El Aouad et al., Phase transitions in a magnetic transverse Ising superlattice of two ferromagnet materials with spins mu=1/2 and S=1, CHIN J PHYS, 38(4), 2000, pp. 863-881
Citations number
46
Categorie Soggetti
Physics
Journal title
CHINESE JOURNAL OF PHYSICS
ISSN journal
05779073 → ACNP
Volume
38
Issue
4
Year of publication
2000
Pages
863 - 881
Database
ISI
SICI code
0577-9073(200008)38:4<863:PTIAMT>2.0.ZU;2-X
Abstract
Within the framework of the effective field theory, based on the use of a p robability distribution technique that correctly accounts for the single si te kinematic relations, we examine the phase transitions of a magnetic tran sverse Ising superlattice consisting of two ferromagnet Ising materials wit h spins mu = 1/2 and S = 1, respectively, on a simple cubic structure. The critical temperature of the system is studied as a function of the interfac e coupling, the thickness of the constituents in a unit cell. A critical va lue of the interface exchange interaction above which the interface magneti sm appears is found. The effects of the transverse field on the critical be havior of the system are also investigated.