Effect of Magnetic Field on the Magnetic Domain Structure of MnAs Film on GaAs

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We have observed the magnetic domain evolution under an external magnetic field in an epitaxial MnAs film on GaAs(001) by magnetic force microscopy. Owing to the strain involved, the ferromagnetic alpha-MnAs and the paramagnetic beta-MnAs phases coexist as self-aligned stripes at room temperature. It was found that a complex magnetic domain structure appeared in the ferromagnetic alpha-phase region at the demagnetized state (H=0 Oe). As the magnetic field increased, the magnetic domain structure was gradually changed, and reached a completely saturated state at H=600 Oe. Especially, at H=300 Oe, the observed magnetic domain wall distribution is well matched with the topographical shape.
Publisher
IEEE
Issue Date
2006-10
Keywords

Magnetic domains; magnetic force microscopy; magnetic thin films

Citation

IEEE TRANSACTIONS ON MAGNETICS, Vol.42, No.10, pp.3249-3251

ISSN
0018-9464
DOI
10.1109/TMAG.2006.878404
URI
http://hdl.handle.net/10203/13813
Appears in Collection
PH-Conference Papers(학술회의논문)
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