Expansion and relaxation of magnetic mirror domains in a Pt/Co/Pt/Co/Pt multilayer with antiferromagnetic interlayer coupling
Identifieur interne : 005C70 ( Main/Curation ); précédent : 005C69; suivant : 005C71Expansion and relaxation of magnetic mirror domains in a Pt/Co/Pt/Co/Pt multilayer with antiferromagnetic interlayer coupling
Auteurs : P. J. Metaxas [Australie, France] ; R. L. Stamps [Australie, Royaume-Uni] ; J.-P. Jamet [France] ; J. Ferre [France] ; V. Baltz [France] ; B. Rodmacq [France]Source :
- Journal of physics. Condensed matter : (Print) [ 0953-8984 ] ; 2012.
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- Pascal (Inist)
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Abstract
We detail measurements of field-driven expansion and zero-field relaxation of magnetic mirror domains in antiferromagnetically coupled perpendicularly magnetized ultrathin Co layers. The zero-field stability of aligned ('mirror') domains in such systems results from non-homogeneous dipolar stray fields which exist in the vicinity of the domain walls. During field-driven domain expansion, we evidence a separation of the domain walls which form the mirror domain boundary. However, the walls realign, thereby reforming a mirror domain, if their final separation is below a critical distance at the end of the field pulse. This critical distance marks the point at which the effective net interaction between the walls changes from attractive to repulsive.
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cobalt</term>
<term>Domain structure</term>
<term>Domain walls</term>
<term>Exchange interactions</term>
<term>Kerr magneto-optical effect</term>
<term>Magnetic domains</term>
<term>Magnetic relaxation</term>
<term>Multilayers</term>
<term>Optical imaging</term>
<term>Platinum</term>
<term>Pulsed field</term>
<term>Stability</term>
<term>Transition elements</term>
<term>Ultrathin films</term>
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<keywords scheme="Pascal" xml:lang="fr"><term>Relaxation magnétique</term>
<term>Interaction échange</term>
<term>Paroi domaine</term>
<term>Champ impulsionnel</term>
<term>Domaine magnétique</term>
<term>Effet Kerr magnétooptique</term>
<term>Structure domaine</term>
<term>Stabilité</term>
<term>Imagerie optique</term>
<term>Multicouche</term>
<term>Platine</term>
<term>Cobalt</term>
<term>Couche ultramince</term>
<term>Métal transition</term>
</keywords>
<keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Platine</term>
<term>Cobalt</term>
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<front><div type="abstract" xml:lang="en">We detail measurements of field-driven expansion and zero-field relaxation of magnetic mirror domains in antiferromagnetically coupled perpendicularly magnetized ultrathin Co layers. The zero-field stability of aligned ('mirror') domains in such systems results from non-homogeneous dipolar stray fields which exist in the vicinity of the domain walls. During field-driven domain expansion, we evidence a separation of the domain walls which form the mirror domain boundary. However, the walls realign, thereby reforming a mirror domain, if their final separation is below a critical distance at the end of the field pulse. This critical distance marks the point at which the effective net interaction between the walls changes from attractive to repulsive.</div>
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