Neutron Depolarization Studies of CoCr to study the perpendicular magnetic domain structure

W.H. Kraan, M.Th. Rekveldt, K. Hemmes, J.C. Lodder

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    Polarised neutrons (l=0.47 nm) are transmitted through sputtered CoCr films. From the measured diagonal elements of the depolarisation matrix it appears that the effective thickness heff of the films is about 50% of the actual thickness. When a soft magnetic NiFe film is deposited before or after deposition of the CoCr, heff is 67 and 60% of the actual thickness respectively, due to the disappearance of the flux closure in the CoCr film. From the angular dependence of the diagonal elements compared with computer simulation the "chain of column" model is supported. Our results indicate that magnetic flux is closed by "branched" spikes at least in the substrate side of the CoCr film.
    Original languageEnglish
    Pages (from-to)440-442
    Number of pages3
    JournalPhysica B+C
    Issue number1-3
    Publication statusPublished - 1986
    EventInternational Conference on Neutron Scattering, ICNS 1985 - Santa Fe, United States
    Duration: 19 Aug 198523 Aug 1985


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