Temperature-dependent perpendicular magnetic anisotropy of Co-Pt on Cr2O3 antiferromagnetic oxide

We clarify the origin of the interface perpendicular magnetic anisotropy (PMA) at the Cr2O3/ferromagnet interface by investigating the temperature dependence of the magnetic properties of Cr2O3/Co-Pt. We observed positive large interface PMA both above and below the blocking temperature of Cr2O3, wi...

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Bibliographic Details
Published in:Applied physics letters 2013-12, Vol.103 (24)
Main Authors: Nozaki, T., Oida, M., Ashida, T., Shimomura, N., Sahashi, M.
Format: Article
Language:English
Subjects:
Antiferromagnetism
Applied physics
Chromium oxides
Cobalt
Ferromagnetism
Magnetic anisotropy
Magnetic properties
Temperature dependence
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Summary:We clarify the origin of the interface perpendicular magnetic anisotropy (PMA) at the Cr2O3/ferromagnet interface by investigating the temperature dependence of the magnetic properties of Cr2O3/Co-Pt. We observed positive large interface PMA both above and below the blocking temperature of Cr2O3, with the PMA being less sensitive to temperature. Our results indicate that the effect of the metal/oxide interface, as well as that of the MgO/CoFeB interface, contributes strongly to the PMA at the Cr2O3/Co-Pt interface, although the effect of perpendicular exchange coupling might also slightly contribute to the interface PMA.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4850533