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Mixed magnetic phases in (Ga,Mn)As epilayers

K. Hamaya·T. Taniyama·Y. Kitamoto·Y. Yamazaki
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Abstract

Two different ferromagnetic-paramagnetic transitions are detected in (Ga,Mn)As/GaAs(001) epilayers from ac susceptibility measurements: transition at a higher temperature results from (Ga,Mn)As cluster phases with [110] uniaxial anisotropy and that at a lower temperature is associated with a ferromagnetic (Ga,Mn)As matrix with <100> cubic anisotropy. A change in the magnetic easy axis from [100] to [110] with increasing temperature can be explained by the reduced contribution of <100> cubic anisotropy to the magnetic properties above the transition temperature of the (Ga,Mn)As matrix.

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K. Hamaya, T. Taniyama, Y. Kitamoto, Y. Yamazaki. 2004-10-01. Mixed magnetic phases in (Ga,Mn)As epilayers. https://doi.org/10.1103/physrevlett.94.147203

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