Magnetic properties and band structures of half-metal-type Co 2CrGa Heusler alloy

R. Y. Umetsu, K. Kobayashi, R. Kainuma, Asaya Fujita, K. Fukamichi, K. Ishida, A. Sakuma

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Abstract

The saturation magnetic moment M s and the Curie temperature T C of the half-metal-type Co 2CrGa Heusler alloy were analyzed. It was observed that the value of M s at 4.2 K for the L2 1-type Co 2CrGa alloy is 3.01 μ B/f.u. It was shown that the T C and the phase-transformation temperature T t from the L2 1 to B2-type structure are 495 and 1050 K, respectively. It was found that the band calculations disclose that the spin polarization is also relatively high in the B2-type structure, although its estimated T C is about 100 K lower than that of the L2 1-type structure.

Original languageEnglish
Pages (from-to)2011-2013
Number of pages3
JournalApplied Physics Letters
Volume85
Issue number11
DOIs
Publication statusPublished - 2004 Sep 13

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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