MnAs Nanocrystals Embedded in GaAs
A. Kwiatkowskia, J. Borysiuka, b, R. Bożeka, D. Wasika, M. Kamińskaa, J. Sadowskic and A. Twardowskia
aInstitute of Experimental Physics, Warsaw University Hoża 69, 00-681 Warsaw, Poland
bInstitute of Electronic Materials Technology, Wólczyńska 133, 01-919 Warsaw, Poland
cInstitute of Physics, PAS, al. Lotników 32/46, 02-668 Warsaw, Poland
Full Text PDF
Received: 17 06 2006;
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-xMnnAs layers at 600ºC, leading to magnetic contrasts in magnetic force microscopy images.
DOI: 10.12693/APhysPolA.110.233
PACS numbers: 61.46.+w, 61.82.Fk, 68.37.Rt, 68.37.Lp, 74.25.Ha