Within the framework of the effective-field theory with correlations, the ferromagnetism of spin-32 Ising model with a transverse crystal field on honeycomb and square and simple cubic lattices is studied. Tricritical phenomena have been observed for the square and simple cubic lattices, but...

The specific heat and temperature dependence of magnetizations in transverse Ising thin films are investigated by the use of the standard mean-field theory and the effective-field theory with correlations. The exchange interaction and transverse field at the surfaces take values different from...

The reduced s-d model with antiferromagnetically coupled impurity spins, previously tested on susceptibility measurements of (La1−xCex)Al2, is applied to CePd2Ga3. The s-d exchange coupling constant J, and conduction bandwidth D are adjusted to obtain the best fit of theoretical specific heat...