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

Seong Hoon Shim, Kyung Ho Kim, Hyung Jun Kim, Yun-Hi Lee, Joonyeon Chang

Research output: Contribution to journalArticle

1 Citation (Scopus)

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.

Original languageEnglish
Pages (from-to)6333-6335
Number of pages3
JournalJournal of Nanoscience and Nanotechnology
Volume13
Issue number9
DOIs
Publication statusPublished - 2013 Sep 1

Fingerprint

Enhanced magnetoresistance
Temperature
Lorentz force
Magnetic domains
Orbit
Magnetoresistance
magnetic domains
Molecular beam epitaxy
thick films
Magnetization
Orbits
molecular beam epitaxy
Scattering
orbits
magnetization
temperature
room temperature
scattering
gallium arsenide

Keywords

  • Anisotropic magnetoresistance (AMR)
  • Fe/MgO/GaAs
  • Ordinary magnetoresistance (OMR)

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

Cite this

Anisotropic magnetoresistance of an epitaxial Fe stripe grown on MgO/GaAs. / Shim, Seong Hoon; Kim, Kyung Ho; Kim, Hyung Jun; Lee, Yun-Hi; Chang, Joonyeon.

In: Journal of Nanoscience and Nanotechnology, Vol. 13, No. 9, 01.09.2013, p. 6333-6335.

Research output: Contribution to journalArticle

Shim, Seong Hoon ; Kim, Kyung Ho ; Kim, Hyung Jun ; Lee, Yun-Hi ; Chang, Joonyeon. / Anisotropic magnetoresistance of an epitaxial Fe stripe grown on MgO/GaAs. In: Journal of Nanoscience and Nanotechnology. 2013 ; Vol. 13, No. 9. pp. 6333-6335.
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