Title :
Surface Effects on Phase Diagram and Magnetization of a Mixed Spin-3/2 and Spin-5/2 Ising Multilayers
Author :
Ma, Bojiang ; Wei Jiang
Author_Institution :
Sch. of Sci., Shenyang Univ. of Technol., Shenyang, China
Abstract :
The magnetizations of multilayers thin film described by the transverse Ising model have been investigated within the framework of the effective-field theory with correlations. The influence of the surface exchange coupling and the surface transverse fields on the magnetization and the phase transition temperature are studied respectively. Within a certain parameter, the magnetization obviously exhibit two compensation temperatures. Two compensation temperatures intersect and disappear with the surface exchange coupling or the surface transverse fields increasing.
Keywords :
Ising model; exchange interactions (electron); magnetic multilayers; magnetic thin films; magnetic transitions; magnetisation; effective-field theory; magnetization; mixed spin Ising multilayers; multilayers thin film; phase diagram; phase transition temperature; surface exchange coupling; surface transverse fields; transverse Ising model; Couplings; Lattices; Magnetic multilayers; Magnetization; Nonhomogeneous media; Saturation magnetization; Temperature; Compensation temperature; magnetization; surface exchange coupling; surface transverse field;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2011.2149506
