Title :
Direct Observation of a Systematic Change of the Magnetic-Domain Structure With Temperature in 50-nm-MnAs/GaAs(001)
Author :
Kim, J.B. ; Lee, Y.P. ; Ryu, K.-S. ; Shin, S.-C. ; Kim, K.W. ; Rhee, J.Y. ; Akinaga, H.
Author_Institution :
Dept. of Phys., Hanyang Univ., Seoul
Abstract :
We present the results of a systematic change of magnetic-domain structure of epitaxial MnAs film on GaAs(001) in a temperature range of 17.5degC-45degC by magnetic-force microscopy (MFM). As temperature decreases, the small localized domains are formed and gradually collapse to the stripe domains. Finally, at 17.5degC the whole film turns to be a nearly single magnetic domain including only a small fraction of the nonferromagnetic beta -MnAs phase, as directly confirmed in the MFM experiment.
Keywords :
arsenic alloys; magnetic domains; magnetic epitaxial layers; magnetic force microscopy; manganese alloys; GaAs; GaAs(001); MFM; MnAs-GaAs; epitaxial film; magnetic-domain structure; magnetic-force microscopy; nonferromagnetic beta-phase; size 50 nm; temperature 17.5 C to 45 C; Magnetic domains; magnetic thin films; magnetic-force microscopy (MFM);
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2008.2001619
