Ferromagnetic nanoclusters formed by Mn implantation in GaAs
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AIP Publishing
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Resumo
Ferromagnetic clusters were incorporated into GaAs samples by Mn implantation and subsequent annealing. The composition and structural properties of the Mn-based nanoclusters formed at the surface and buried into the GaAs sample were analyzed by x-ray and microscopic techniques. Our measurements indicate the presence of buried MnAs nanoclusters with a structural phase transition around 40 °C, in accord with the first-order magneto-structural phase transition of bulk MnAs. We discuss the structural behavior of these nanoclusters during their formation and phase transition, which is an important point for technological applications. © 2005 American Institute of Physics.
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Emission intensities , Ferromagnetic nanoclusters , Room temperature , Temperature dependence , Atomic force microscopy , Energy dispersive spectroscopy , Lattice constants , Manganese , Phase transitions , Secondary ion mass spectrometry , Semiconducting gallium arsenide , Thermal expansion , Transmission electron microscopy , X ray diffraction analysis , Ferromagnetic materials
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Inglês
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Applied Physics Letters, v. 86, n. 7, p. 1-3, 2005.
