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A Study of the Process of Decomposition of Supersaturated GaAs: Fe Solid Solution by Scanning Probe Microscopy

Author:
Khludkov, S. S.  Prudaev, I. A.  Novikov, V. V.  Tolbanov, O. P.  Ivonin, I. V.  


Journal:
SEMICONDUCTORS


Issue Date:
2010


Abstract(summary):

Using an atomic-force microscope, the decomposition of the supersaturated solid solution of iron-doped GaAs (GaAs: Fe) is studied. GaAs: Fe samples were obtained in the course of high-temperature diffusion of Fe into GaAs and subsequent annealing at a temperature by 200 degrees C below the doping temperature. The measurements are performed for transverse cleavages along the cleavage planes of the GaAs:Fe wafers. It is shown that, during annealing of the GaAs: Fe samples, the supersaturated alloy decomposes with the formation of particles of the second phase from similar to 50 nm to similar to 1 mu m in size. The particles of the second phase possess ferromagnetic properties at room temperature.


Page:
975---977


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