Magnetic properties of Fe{sub 0.4}Mn{sub 0.6}/Co{sub 2}FeAl bilayers grown on GaAs by molecular-beam epitaxy

Journal Article · Tue Nov 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3657780· OSTI ID:22038760

Meng, K K; Nie, S H; Yu, X Z; Wang, S L; Zhao, J H ^[1]; Yan, W S ^[2]

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1. State Key Laboratory for Superlattices and Microstructures, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083 (China)
2. National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029 (China)

Polycrystalline Fe{sub 0.4}Mn{sub 0.6} layers with the different thickness are deposited on 4-nm-thick single-crystalline Co{sub 2}FeAl layers, which are grown on GaAs (001) substrates at room temperature by molecular-beam epitaxy. Both the exchange bias and the in-plane magnetic anisotropies of the bilayers are strongly dependent on the thickness of the Fe{sub 0.4}Mn{sub 0.6} layer. The former is described using a granular level model. A modified Stoner-Wohlfarth model is used to explain the in-plane magnetic anisotropies observed at 5 K, while one possible reason for the magnetic anisotropies measured at 300 K is the complex interfacial magnetic properties proved by x-ray magnetic circular dichroism measurements.

• OSTI ID: 22038760
• Journal Information: Journal of Applied Physics, Vol. 110, Issue 9; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
ANISOTROPY
COBALT ALLOYS
FERROMAGNETIC MATERIALS
GALLIUM ARSENIDES
HYSTERESIS
INTERFACES
IRON ALLOYS
LAYERS
MAGNETIC CIRCULAR DICHROISM
MAGNETIC PROPERTIES
MAGNETISM
MANGANESE ALLOYS
MOLECULAR BEAM EPITAXY
MONOCRYSTALS
POLYCRYSTALS
SUBSTRATES
X-RAY SPECTRA