Magnetic Properties of Weak Itinerant Electron Ferromagnet CoVSb

Takeshi Kanomata; Toshiyuki Igarashi; Hironori Nishihara; Keiichi Koyama; Kazuo Watanabe; Klaus -U. Neumann; Kurt R. A. Ziebeck

doi:10.2320/matertrans.47.496

Takeshi Kanomata, Toshiyuki Igarashi, Hironori Nishihara, Keiichi Koyama, Kazuo Watanabe, Klaus -U. Neumann, Kurt R. A. Ziebeck

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Keywords: itinerant electron ferromagnet, spin fluctuation, half-Heusler compound

JOURNAL FREE ACCESS

2006 Volume 47 Issue 3 Pages 496-500

DOI https://doi.org/10.2320/matertrans.47.496

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Abstract

Precise magnetization measurements have been made on the weak itinerant electron ferromagnet CoVSb. The magnetic moment at 4.2 K and the Curie temperature T_C are 0.16 μ_B/f.u. and 45 K, respectively. Below 10 K, the decrease in the square of the spontaneous magnetization M_s(T)² is proportional to T². However, over a wide temperature range from 24 K to the Curie temperature, the decrease in M_s(T)² is proportional to T^4⁄3. The results obtained are analyzed using spin fluctuation theory.

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