Magnetotransport properties of polycrystalline and epitaxial chromium dioxide nanowires

Xiaojing Zou, Gang Xiao, Sunxiang Huang, Tingyong Chen, Chia Ling Chien

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2 Scopus citations

Abstract

Temperature dependent magnetotransport measurements were performed on polycrystalline and epitaxial chromium dioxide (Cr O2) nanowires fabricated using the selective-area growth technique. Polycrystalline nanowires showed a negative temperature coefficient of resistivity at low temperatures because of strong grain boundary scattering. The magnetoresistance (MR) value exhibited a width dependence, reaching a maximum of 20% for a 150 nm wide wire. In contrast, the MR response of single crystal Cr O2 wires was mainly determined by magnetocrystalline and shape anisotropy.

Original languageEnglish (US)
Article number07D710
JournalJournal of Applied Physics
Volume103
Issue number7
DOIs
StatePublished - Apr 21 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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