Anisotropic magnetoresistance of an epitaxial Fe stripe grown on MgO/GaAs

Title
Anisotropic magnetoresistance of an epitaxial Fe stripe grown on MgO/GaAs
Authors
심성훈김경호김형준이윤희장준연
Keywords
anisotropic magnetoresistance; ordinary magnetoresistance; Fe/MgO/GaAs
Issue Date
2013-09
Publisher
Journal of nanoscience and nanotechnology
Citation
VOL 13, NO 9, 6333-6335
Abstract
The anisotropic magnetoresistance of a [100] oriented Fe stripe grown on MgO/GaAs was investigated in order to elucidate the magnetization switching of patterned Fe. A 15 nm thick Fe film was epitaxially grown on MgO/GaAs layers using molecular beam epitaxy and a 50 μm × 4 μm shaped Fe stripe was patterned along its magnetic easy axis of [100]. Negative (positive) resistance peaks appear at room (low) temperature in magnetoresistance measurement. A reversal in sign of the peak was evidently observed with decreasing temperature. Such a reversal of resistance peak is caused by the competition between Lorentz force (ordinary) and spin-orbit (extraordinary) dominated scattering processes in a magnetic domain, which is significantly affected by temperature.
URI
http://pubs.kist.re.kr/handle/201004/45250
ISSN
15334880
Appears in Collections:
KIST Publication > Article
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