Magnetism of 3{ital d} transition-metal monolayers and two-dimensional Cr clusters deposited on Fe(001)
- Institut de Physique et de Chimie des Materiaux de Strasbourg, Groupe d`Etude des Materiaux Metalliques (UMR 46 CNRS-ULP-EHICS), 23 rue du Loess, 67037 Strasbourg (France)
We study the magnetic properties of transition-metal monolayers (ML) and Cr clusters deposited on Fe(001). We use a self-consistent tight-binding model and the recursion technique in order to get the most stable magnetic state for each atomic configuration. The magnetism is taken into account in the mean-field approximation. We show that for a Cr ML the {ital p}(2{times}2) magnetic solution is lower in energy than all the others. We find that monolayers of V, Ni, and Co are ferromagnetic {ital p}(1{times}1) on Fe(001) whereas the Mn ML are {ital c}(2{times}2) antiferromagnetic. We study also the magnetic transition occurring for Cr clusters, for an increasing Cr atoms number, from ferromagnetic to the {ital p}(2{times}2) order. The results of these calculations are in agreement with those of an Ising model whose parameters are determined. Such an Ising model predicts with a good accuracy the most stable state and the first excited states for each cluster shape. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 396618
- Journal Information:
- Physical Review, B: Condensed Matter, Journal Name: Physical Review, B: Condensed Matter Journal Issue: 17 Vol. 54; ISSN PRBMDO; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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