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    American Institute of Physics (AIP)
    Publication Date: 2016-04-12
    Description: 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
    Electronic ISSN: 1077-3118
    Topics: Physics
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