Using the effective field theory with a probability distribution technique that accounts for the self-spin correlation functions, the magnetic properties of disordered Fe–Al alloys on the basis of a site-diluted quantum Heisenberg spin model are examined. We calculated the critical temperature...

The effective field theory within a probability distribution technique that accounts for the self spin correlation functions is used to study the magnetic properties of the ferromagnetic or ferrimagnetic bilayer (A–B) system described by the S=12 and S=32 (with the anisotropy D in the...