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Issue ESAIM: Proc.
Volume 22, 2008
CANUM 2006 - Congrès National d'Analyse Numérique
Page(s) 118 - 121
DOI http://dx.doi.org/10.1051/proc:072213
Published online 01 February 2008

ESAIM: Proc., 2008, Vol. 22, pp. 118-121
DOI: 10.1051/proc:072213

Micromagnetic Modeling on self-assembled iron nanostructures

Jean-Christophe Toussaint, Olivier Fruchart and Fabien Cheynis

Laboratoire Louis Néel, CNRS-INPG, 25, avenue des martyrs, BP 166, 38042 Grenoble Cedex, France


(Published online: 1 February 2008)

Abstract
Single-crystalline Fe dots self-assembled under ultra high vacuum (UHV) are used as a model system to discuss micromagnetic properties of sub-micron size magnetic dots. Landau and diamond states were identified by magnetic force microscopy (MFM) and reproduced by simulations.

To understand mechanisms involved in the magnetization reversal, the in-plane angular variations of nucleation and annihilation fields of a multi-domain magnetic single dot with a micro-SQUID were studied.


Résumé
Des îlots de fer auto-assemblés obtenus sous ultravide (UHV) sont utilisés comme système modèle pour étudier les propriétés micromagnétiques de plots sub-microniques. Les états Landau et losange ont été identifiés et reproduits par simulations. Pour comprendre les mécanismes de renversement de l'aimantation, les variations angulaires des champs de nucléation et d'annihilation d'un plot unique multi-domaines ont été étudiées par microsquid.


Mathematics Subject Classification. 35Q60, 65Z05

Key words: Micromagnetism


© EDP Sciences, ESAIM 2007


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