Ferromagnetic resonance study of MnAs (Ga,Mn) As bilayers

M. Cubukcu, H. J. Von Bardeleben, Kh Khazen, J. L. Cantin, M. Zhu, M. J. Wilson, P. Schiffer, N. Samarth

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8 Scopus citations

Abstract

We report the investigation of the static and dynamic magnetic properties of type- A MnAs Ga0.945 Mn0.055 As (001) bilayers. Static magnetization measurements show them to be ferromagnetically coupled with an exchange bias field of ∼340 Oe. The magnetocrystalline anisotropy constants of the (Ga,Mn)As layer were determined by X -band ferromagnetic resonance (FMR) spectroscopy. The (Ga,Mn)As layers are magnetically inhomogeneous as evidenced by a strong broadening of the (Ga,Mn)As uniform mode linewidth. The MnAs FMR spectra reveal the presence of a small MnAs fraction with a different orientation.

Original languageEnglish (US)
Article number07C506
JournalJournal of Applied Physics
Volume105
Issue number7
DOIs
StatePublished - 2009

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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