Structural and magnetic properties of MnAs/GaAs ferromagnetic semiconductor nanocomposite material
Författare
Summary, in English
Self-organized (Ga,Mn)As nanoclusters, embedded in GaAs and formed during thermal annealing of Ga1-xMnxAs layer at 500 degrees C or 600 degrees C, were studied using Transmission Electron Microscopy (TEM) and Magnetic Force Microscopy (MFM). We found that 10-20 nm large NiAs-type hexagonal MnAs nanocrystals gave magnetic contrast in MFM images, whereas smaller zinc-blende nanoinclusions were not visible by means of this technique. Theoretical simulations showed that MFM contrasts reflect interaction between magnetic tip and many randomly distributed MnAs nanocrystals.
Avdelning/ar
Publiceringsår
2008
Språk
Engelska
Sidor
740-743
Publikation/Tidskrift/Serie
Journal of Materials Science: Materials in Electronics
Volym
19
Issue
8-9
Dokumenttyp
Artikel i tidskrift
Förlag
Springer
Ämne
- Physical Sciences
- Natural Sciences
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 0957-4522