Phase transitions in layered magnetic structures Article

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Overview

abstract

• The magnetic phase transitions occuring in layered structures, sandwiches and superlattices, are studied within Ising model. The spin- 1 2 Hamiltonian is solved in the mean field approximation. We consider systems formed by a finite and infinite number of slabs of two magnetic materials. Analytic expressions for the Curie temperature as a function of the Hamiltonian parameters and the thickness of the slabs are given. Results for the Curie temperature as a function of slab thickness and coupling constants are presented. Comparison between the Curie temperature in sandwiches and superlattices are discussed. © 1992.

authors

• Aguilera Granja Juan Faustino
• Morán-López J.L.
• Ortíz-Saavedra J.

publication date

• 1992-01-01

published in

• Solid State Communications  Journal

Research

keywords

• Phase Transitions; SUPERLATTICES; Ising Model; Layered Magnetic Structures; Mean Field Approximation; Spin Hamiltonian; Magnetic Materials

Identity

Digital Object Identifier (DOI)

• 10.1016/0038-1098(92)90674-X

Additional Document Info

start page

• 71

end page

• 74

volume

• 82

issue

• 2