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Title: Direct local observation of magnetic anisotropy in microscopic Ga1-xMnxAs dots
Authors: Malfait, Mathieu ×
Vervaeke, Koen
Fritzsche, Joachim
Moshchalkov, V. V
Borghs, Gustaaf #
Issue Date: Nov-2006
Publisher: Amer inst physics
Series Title: Applied Physics Letters vol:89 issue:19
Article number: 192502
Abstract: The effect of the patterning of a Ga1-xMnxAs (x=0.08) film into an array of microscopic dots on its magnetic properties is locally studied by means of scanning Hall probe microscopy. The measured stray field patterns indicate the presence of a single domain state with a uniform magnetization within the Ga1-xMnxAs dots. The magnetic anisotropy of the dot array is directly imaged, revealing a [100] easy axis in the as-grown sample and a [1(1) over bar 0] easy axis orientation after annealing. In contrast to a temperature dependent anisotropy in the plain Ga1-xMnxAs film, no magnetic easy axis reorientation is observed within the experimentally accessible temperature range.
ISSN: 0003-6951
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Physics and Astronomy - miscellaneous
× corresponding author
# (joint) last author

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