Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1804801 | Journal of Magnetism and Magnetic Materials | 2006 | 9 Pages |
Abstract
The three-dimensional spin-1 Ising superlattice consisting of two different ferromagnetic materials with two different crystal fields Î1 and Î2 is considered in the mean field approximation. The phase diagrams are considered in the (t,d2) plane for different ranges of variation of d1(t=T/J,d1=Î1/J, d2=Î2/J are the reduced temperature and crystal fields respectively). The phase diagrams exhibit a variety of multicritical points and reentrant and double reentrant behaviours. They are found to depend qualitatively and/or quantitatively on the thicknesses of the materials in a supercell. This has direct consequences on the nature of the magnetic states of superlattices with different thicknesses.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Hamid Ez-Zahraouy, Ahmed Kassou-Ou-Ali,