CHINESE JOURNAL OF PHYSICS VOL. 40, NO. 3 JUNE 2002

Phase Transitions in a Two Component Spin-One Ising Ferromagnetic Superlattice

A. Mattoni^*1, M. Bagagiolo¹, and A. Saber<sup>1,2

1</sup>INFM, Dipartimento di Fisica, Universitá di Padova,

Via Marzolo 8, 35131 Padova, Italy

²Department of Physics, Faculty of Sciences, Moulay Ismail University,

B.P. 4010, Meknes, Morocco
(Received June 12, 2001)

Using effective field theory with a probability distribution technique, the magnetic properties in an infinite superlattice consisting of two different ferromagnets are studied in a spin-one Ising model. The dependence of the Curie temperature is calculated as a function of the thickness of the two slabs in one period and as a function of the intra- and interlayer exchange interactions. A critical value of the exchange reduced interaction, above which the interface magnetism appears, is found.

PACS. 77.80.Bh - Phase transitions and Curie point.
PACS. 75.70.Cn - Interfacial magnetic properties.

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