Effect of annealing on the electric and magnetic properties of GaMnAs and Be-codoped GaMnAs |
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| Authors: | Fucheng Yu Cunxu GaoSe Young Jeong P.B. ParchinskiyDojin Kim Hyojin KimYoung Eon Ihm |
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| Affiliation: | Department of Materials Science and Engineering, Chungnam National University, Daejeon 305-764, Korea |
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| Abstract: | GaMnAs and Be-codoped GaMnAs films grown via molecular beam epitaxy (MBE) were heat treated and the stability of Mn in the matrix was investigated. MnAs had a stable phase at the low growth temperature, but MnGa was stable at the annealing temperature. Be-codoping did not prevent the precipitation processes, but Be itself was stable during the annealing process to maintain the GaAs matrix at the high conductivity. |
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| Keywords: | 73.61.Ey 75.50.Pp 75.70.Ak 81.15.Hi 81.40.Rs |
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