2006
DOI: 10.12693/aphyspola.110.233
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MnAs Nanocrystals Embedded in GaAs

Abstract: We report on cross-sectional transmission electron microscopy and magnetic force microscopy studies performed on self-organized MnAs nanoclusters embedded in GaAs. It was found that 10 ÷ 20 nm large MnAs ferromagnetic nanocrystals were formed during rapid thermal annealing of Ga1−xMnxAs layers at 600• C, leading to magnetic contrasts in magnetic force microscopy images.

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(4 citation statements)
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“…The results of EXAFS analysis for the 'as-grown' sample point at the homogeneity of this sample, and are in agreement with independent results obtained by transmission electron microscopy (TEM) for the same sample [30].…”
Section: Resultssupporting
confidence: 88%
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“…The results of EXAFS analysis for the 'as-grown' sample point at the homogeneity of this sample, and are in agreement with independent results obtained by transmission electron microscopy (TEM) for the same sample [30].…”
Section: Resultssupporting
confidence: 88%
“…Let us discuss now sample 'a'. The analysis of TEM images for this sample revealed Mn-rich zinc-blende Mn(Ga)As clusters with diameter about 3 nm with pronounced structural disorder [30]. It is well known that large disorder can lead to drastic reduction of the EXAFS amplitude, and hence, to a lowering of the apparent coordination numbers.…”
Section: Resultsmentioning
confidence: 79%
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