Magnetocrystalline anisotropy of Fe and Co slabs and clusters on SrTiO$_3$ by first-principles - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2016

Magnetocrystalline anisotropy of Fe and Co slabs and clusters on SrTiO$_3$ by first-principles

Résumé

In this work, we present a detailed theoretical investigation of the electronic and magnetic properties of ferromagnetic slabs and clusters deposited on SrTiO$_3$ via first-principles, with a particular emphasis on the magneto-crystalline anisotropy (MCA). We found that in the case of Fe films deposited on SrTiO$_3$ the effect of the interface is to quench the MCA whereas for Cobalt we observe a change of sign of the MCA from in-plane to out-of-plane as compared to the free surface. We also find a strong enhancement of MCA for small clusters upon deposition on a SrTiO$_3$ substrate. The hybridization between the substrate and the $d$-orbitals of the cluster extending in-plane for Fe and out-of-plane for Co is at the origin of this enhancement of MCA. As a consequence, we predict that the Fe nanocrystals (even rather small) should be magnetically stable and are thus good potential candidates for magnetic storage devices.
Fichier principal
Vignette du fichier
manuscript.pdf (4.92 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01271728 , version 1 (09-02-2016)

Identifiants

Citer

Alexander Smogunov, Cyrille Barreteau, Dongzhe Li. Magnetocrystalline anisotropy of Fe and Co slabs and clusters on SrTiO$_3$ by first-principles. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2016. ⟨hal-01271728⟩
118 Consultations
78 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More