Year: 2006
Type: article
Abstract: The disorder and layer transitions in the interface between an Ising spin‐1/2 film denoted (n ), and an Ising spin‐1 film denoted (m ), are studied using Monte Carlo simulations. The effects of both an external magnetic field, acting only on the spin‐1/2 film, and a crystal magnetic field acting only on the spin‐1 film, are studied for a fixed temperature and selected values of the coupling constant J p between the two films. It is found that for large values of the constant J p, the layers of the film (n ), as well as those of the film (m ), undergo a first order layering transition. On the other hand, the only disordered layer of the film (n ) is that one belonging to the interface films (n )/(m ), for any values of the crystal field Δ . We show the existence of a critical value of the crystal field Δ c, above which this particular layer of the film (n ) is disordered. We found that Δ c depends on the values of the constant coupling J p between the two films. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Source: physica status solidi (b)
Authors: L. Bahmad, A. Benyoussef
Institution: Mohammed V University
Language: English
Subfield: Condensed Matter Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2047499145