Magnetic and transport properties of tetragonal- or cubic-Heusler-type Co-substituted Mn-Ga epitaxial thin films

T. Kubota, S. Ouardi, S. Mizukami, G. H. Fecher, C. Felser, Y. Ando, T. Miyazaki

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19 Citations (Scopus)

Abstract

The composition dependence of the structural, magnetic, and transport properties of epitaxially grown Mn-Co-Ga films were investigated. The crystal structure was observed to change from tetragonal to cubic as the Co content was increased. In terms of the dependence of saturation magnetization on the Co content, relatively small value was obtained for the Mn2.3Co 0.4Ga1.3 film at a large K u value of 9.2 Merg/cm 3. Electrical resistivity of Mn-Co-Ga films was larger than that of pure Mn-Ga film. The maximum value of the resistivity was 490 μ Ω cm for Mn2.2Co0.6Ga1.2 film. The high resistivity of Mn-Co-Ga might be due to the presence of localized electron states in the films due to chemical disordering caused by the Co substitution.

Original languageEnglish
Article number17C723
JournalJournal of Applied Physics
Volume113
Issue number17
DOIs
Publication statusPublished - 2013 May 7

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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