Electronic specific heat coefficient and magnetic properties of L2 1 phase in Co2YGa (Y = Cr, Mn and Fe) Heusler alloys

R. Y. Umetsu, N. Endo, A. Fujita, R. Kainuma, A. Sakuma, K. Fukamichi, K. Ishida

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)

Abstract

The electronic specific heat coefficient γ, and the high field susceptibility χhf of the L21 phase in Co-based Heusler alloys were investigated in order to relate these properties to the spin polarization P. The γ-values of Co2CrGa, Co2MnGa and Co2FeGa alloys are comparable to the theoretical values of the total density of states at the Fermi energy. The value of χhf for Co2CrGa alloy having a high spin polarization of about 95% is significantly low on the order of 10-4 μB/f.u.-T. In contrast, χhf for Co2FeGa alloy having a theoretical P value of 37% is one order larger than that for Co2CrGa alloy. These results imply that there is a relation between χhf and P of the present Co-based Heusler alloys.

Original languageEnglish
Article number062036
JournalJournal of Physics: Conference Series
Volume200
Issue numberSECTION 6
DOIs
Publication statusPublished - 2010

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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