Email this article Thermal Expansion in Fe2MAl (M = Ti, V, Cr, Mn, Fe, Co, and Ni) Band Ferromagnets
- Authors: Kourov N.I.1, Kazantsev V.A.1, Pervozchikova Y.A.1, Marchenkov V.V.1,2
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Affiliations:
- Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
- Ural Federal University
- Issue: Vol 60, No 12 (2018)
- Pages: 2678-2681
- Section: Thermal Properties
- URL: https://journal-vniispk.ru/1063-7834/article/view/204712
- DOI: https://doi.org/10.1134/S1063783418120181
- ID: 204712
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Abstract
The linear thermal expansion coefficients (LTEC) of semimetallic Fe2MAl (M = Ti, V, Cr, Mn, Fe, Co, and Ni) alloys have been measured in the temperature range 80–900 K. The magnetic-fluctuation contribution to LTEC αm, sf(T) = αm(T) + αsf(T) consisting of negative “Stoner” αm(T) and positive “spin-fluctuation” αsf(T) contributions. The αm(T) contribution is assumed to be proportional to the square of the spontaneous magnetization. The αsf(T) contribution, as is the case in paramagnetic and ferromagnetic states, is due to the effects of inducing local magnetic moments by spin fluctuations.
About the authors
N. I. Kourov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Author for correspondence.
Email: kourov@imp.uran.ru
Russian Federation, Yekaterinburg, 620108
V. A. Kazantsev
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: kourov@imp.uran.ru
Russian Federation, Yekaterinburg, 620108
Yu. A. Pervozchikova
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences
Email: kourov@imp.uran.ru
Russian Federation, Yekaterinburg, 620108
V. V. Marchenkov
Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences; Ural Federal University
Email: kourov@imp.uran.ru
Russian Federation, Yekaterinburg, 620108; Yekaterinburg, 620002
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