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Magnetic vortex in epitaxially-grown Co2(Fe,Mn)Si alloy (2016)

T. Yamamoto, T. Seki, M. Kotsugi and K. Takanashi

American Institute of Physics (AIP)

In: Applied Physics Letters

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Publikationsdatum: 2016-04-12

Beschreibung: We report magnetic vortex formation in epitaxially grown Co 2 Fe 0.4 Mn 0.6 Si (CFMS) Heusler alloy discs that was confirmed using photoemission electron microscopy and the magneto-optical Kerr effect. The phase diagram of magnetic domain structures as functions of the disc thickness ( t ) and diameter ( D ) indicates that the magnetic vortex is stable in wide ranges of t and D even for the epitaxial CFMS. The annihilation field of vortex core depended not only on the disc aspect ratio but also on t . Numerical simulation suggests that this t dependence results from extrinsic pinning of a vortex core due to the epitaxial growth.

Print ISSN: 0003-6951

Digitale ISSN: 1077-3118

Thema: Physik

Publiziert von American Institute of Physics (AIP)

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