Article ID Journal Published Year Pages File Type
1804801 Journal of Magnetism and Magnetic Materials 2006 9 Pages PDF
Abstract
The three-dimensional spin-1 Ising superlattice consisting of two different ferromagnetic materials with two different crystal fields Δ1 and Δ2 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=Δ1/J, d2=Δ2/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
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