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<dc:title xml:lang="en">Micromagnetic simulation of three-dimensional nano-architectures</dc:title>
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<dc:subject xml:lang="fr">Simulations micromagnétiques</dc:subject>
<dc:subject xml:lang="fr">Nanostructures tridimensionnelles</dc:subject>
<dc:subject xml:lang="fr">Dynamique de l’aimantation</dc:subject>
<dc:subject xml:lang="fr">Hyperfréquences</dc:subject>
<dc:subject xml:lang="en">Micromagnetic simulations</dc:subject>
<dc:subject xml:lang="en">Three-dimensional magnetic nanostructures</dc:subject>
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<dcterms:abstract xml:lang="fr">Cette thèse traite de simulations micromagnétiques de la dynamique hyperfréquence de l’aimantation dans des nano-architectures tridimensionnelles (3D) constituées de réseaux de nanofils interconnectés. Les propriétés magnétiques de tels nanomatériaux artificiels sont fortement influencées par leur géométrie. En étudiant la structure magnétique statique de ces systèmes, nous montrons des configurations correspondant à des réseaux de glace de spin artificiels 3D, avec des interactions frustrées et des structures de défaut monopolaires aux points d'intersection. Nos simulations révèlent une activité élevée de ces sites dans les excitations magnétiques de haute fréquence. Nous étudions diverses nano-architectures 3D et montrons que leur géométrie et leur structure magnétique donnent des signatures hyperfréquences caractéristiques. Le contrôle de ces caractéristiques pourrait ouvrir de nouvelles voies pour la recherche magnonique et dans le développement de métamatériaux magnétiques reprogrammables.</dcterms:abstract>
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