Eur. Phys. J. B 23, 235-241 (2001)
https://doi.org/10.1007/s100510170073

Phase transitions of a spin-one alternating magnetic superlattice

INFM, Dipartimento di Fisica, Università di Padova, Via Marzolo 8, 35131 Padova, Italy

Corresponding author: ^a saber@padova.infm.it

Received: 2 March 2001
Published online: 15 September 2001

Abstract

We examine the critical behavior of a magnetic superlattice which made up of two magnetic materials, A and B. Using the effective field theory with a probability distribution technique that accounts for the single-site spin correlation, we derive the analytical equation for the Curie temperature of the superlattice which alternates as ABAB...AB. The dependence of the Curie temperature on the interface coupling strength J_ab and the layer number of the finite superlattice was calculated. The effects of the surface modification are also studied.