Mossbauer spectroscopic study of a σ-Fe65.9V34.1 alloy: Curie and Debye temperatures

JOURNAL OF ALLOYS AND COMPOUNDS

卷:663

Article

Zukrowski, Jan¹  Dubiel, Stanislaw M.² 

[1] AGH Univ Sci & Technol, Acad Ctr Mat & Nanotechnol, Al A Mickiewicza 30, PL-30059 Krakow, Poland

[2] AGH Univ Sci & Technol, Fac Phys & Appl Comp Sci, Al A Mickiewicza 30, PL-30059 Krakow, Poland

关键词: Fe-V intermetallic compounds;    Sigma-phase;    Moessbauer spectrpscopy;    Curie temperature;    Debye temperature;   

DOI  :  10.1016/j.jallcom.2015.12.069

来源: Elsevier

【 摘 要 】

Sigma-phase Fe65.9V34.1 alloy was investigated with the Mossbauer spectroscopy. Mossbauer spectra were recorded in the temperature interval of 80-330 K. Their analysis in terms of the hyperfine distribution protocol yielded the average hyperfine field, < B >, the average center shift, < CS >, and the spectral area, A. The magnetic ordering temperature, T-C = 312.5(5) K was determined from the temperature dependence of < B >, and the Debye temperature, T-D, from the temperature dependence of < CS > and the relative spectral area. The value obtained from the former was 403(17) K and that from the latter 374(2) K. The lattice dynamics of Fe atoms was described in terms of the kinetic, E-k, and the potential energy, E-p. The force constant for the Fe atoms vibrations was determined as 188 (6) N/m. (C) 2015 Elsevier B.V. All rights reserved.

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