Perpendicular magnetic anisotropy in Co2MnGa and its anomalous Hall effect

We report perpendicular magnetic anisotropy in the ferromagnetic Heusler alloy Co2MnGa in a MgO/Co2MnGa/Pd trilayer stack for Co2MnGa thicknesses up to 3.5 nm. There is a thickness- and temperature-dependent spin reorientation transition from perpendicular to in-plane magnetic anisotropy, which we s...

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Bibliographic Details
Published in:Applied physics letters 2017-02, Vol.110 (6)
Main Authors: Ludbrook, B. M., Ruck, B. J., Granville, S.
Format: Article
Language:English
Subjects:
Anisotropy
Applied physics
Electromagnetism
Ferromagnetism
Hall effect
Heusler alloys
Magnetic anisotropy
Temperature dependence
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Summary:We report perpendicular magnetic anisotropy in the ferromagnetic Heusler alloy Co2MnGa in a MgO/Co2MnGa/Pd trilayer stack for Co2MnGa thicknesses up to 3.5 nm. There is a thickness- and temperature-dependent spin reorientation transition from perpendicular to in-plane magnetic anisotropy, which we study through the anomalous Hall effect. From the temperature dependence of the anomalous Hall effect, we observe the expected scaling of ρ x y A H E with ρxx , suggesting that the intrinsic and side-jump mechanisms are largely responsible for the anomalous Hall effect in this material.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4976078