Control of the magnetic anisotropy of epitaxially grown MnAs/GaAs ferromagnet-semiconductor hybrid superlattices

Journal Article · Sun Oct 31 23:00:00 EST 2004 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.1813630· OSTI ID:20634387

Song, J H; Lee, J J; Cui, Y; Ketterson, J B; Cho, Sunglae ^[1]

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1. Department of Physics and Astronomy and Material Research Center, Northwestern University, Evanston, Illinois 60208 (United States)

Epitaxial hybrid structures of the ferromagnet-semiconductor superlattice MnAs/GaAs were grown on GaAs(001) substrates by molecular-beam epitaxy and the dependence of the magnetic properties on the growth temperature and the periodicity were characterized. The magnetic anisotropy is strongly dependent on the surface reconstruction of GaAs(001) substrates. The increase of the periodicity from 5 nm/5 nm to 10 nm/10 nm also changes the magnetic anisotropy. These results demonstrate that the surface reconstruction of the substrate and the periodicity determine the magnetic structure of the MnAs/GaAs superlattices.

• OSTI ID: 20634387
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 18 Vol. 85; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ANISOTROPY
FERROMAGNETIC MATERIALS
GALLIUM ARSENIDES
HYSTERESIS
LAYERS
MAGNETIC PROPERTIES
MAGNETIC SEMICONDUCTORS
MANGANESE ARSENIDES
MOLECULAR BEAM EPITAXY
PERIODICITY
SUBSTRATES
SUPERLATTICES
SURFACES