Mixed magnetic phases in (Ga,Mn)As epilayers

K. Hamaya; T. Taniyama; Y. Kitamoto; Y. Yamazaki

doi:10.1103/PhysRevLett.94.147203

Mixed magnetic phases in (Ga,Mn)As epilayers

Materials Science 2009-11-10 v1

Authors: 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.

Keywords

(Ga,Mn)As epilayers ferromagnetic-paramagnetic transition magnetic anisotropy ac susceptibility cluster phases

Cite

@article{arxiv.cond-mat/0410022,
  title  = {Mixed magnetic phases in (Ga,Mn)As epilayers},
  author = {K. Hamaya and T. Taniyama and Y. Kitamoto and Y. Yamazaki},
  journal= {arXiv preprint arXiv:cond-mat/0410022},
  year   = {2009}
}

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