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Single-crystalline Fe/Cr/Fe/MgO/Fe magnetotunnel junctions grown on GaAs(001)

Grabowski, J.; Przybylski, M.; Nyvlt, M.; Zukrowski, J.; Wulfhekel, W.; Kirschner, J.

Abstract: Fe/MgO/Fe/Cr/Fe tunneling structures were epitaxially grown directly on GaAs(001) without buffer layer. Interdiffusion in the Fe/GaAs interface was investigated using conversion electron Mossbauer spectroscopy. An independent magnetization switching in the Fe electrodes was achieved by pinning the magnetization of the Fe-top electrode by antiferromagnetic coupling across a Cr spacer to another Fe film. For transport measurements, optical lithography and ion etching were applied to reduce the junction area. A tunneling magnetoresistance of 10%-12% at room temperature was found. (C) 2006 American Institute of Physics.

Zugehörige Institution(en) am KIT Physikalisches Institut (PHI)
Publikationstyp Zeitschriftenaufsatz
Jahr 2006
Sprache Englisch
Identifikator DOI: 10.1063/1.2171939
ISSN: 0021-8979
KITopen ID: 1000053840
Erschienen in Journal of Applied Physics
Band 99
Heft 8
Seiten Art.Nr. 08C908
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