Structural and magnetic properties of MnAs/GaAs ferromagnetic semiconductor nanocomposite material
Author
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.
Department/s
Publishing year
2008
Language
English
Pages
740-743
Publication/Series
Journal of Materials Science: Materials in Electronics
Volume
19
Issue
8-9
Document type
Journal article
Publisher
Springer
Topic
- Physical Sciences
- Natural Sciences
Status
Published
ISBN/ISSN/Other
- ISSN: 0957-4522