Thermoelectric Properties of Bi2Te2.7Se0.3 Solid Solution with Various Grain Sizes
- Autores: Tagiyev M.M.1, Dzhafarova S.Z.1, Ahmedova A.M.1, Abdinova G.D.2
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Afiliações:
- Azerbaijan State Economic University
- Institute of Physics of the National Academy of Sciences of Azerbaijan
- Edição: Volume 62, Nº 3 (2019)
- Páginas: 505-511
- Seção: Article
- URL: https://bakhtiniada.ru/1064-8887/article/view/241679
- DOI: https://doi.org/10.1007/s11182-019-01738-4
- ID: 241679
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Resumo
The electrical conductivity (σ) and the coefficients of thermal e.m.f. (α), Holl (RH), and thermal conductivity (χ) of extruded n-Вi2Te2.7Se0.3 samples with various grain sizes are studied in the temperature range 77–300 K after extrusion and upon subsequent annealing. It is shown that annealing substantially increases σ and χ and has a little effect on α at 77 K. This indicates that at 77 K, the structural imperfections of grains play the main role in the electron and phonon scattering. There is a correlation between the degree of texture and thermoelectric properties.
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Sobre autores
M. Tagiyev
Azerbaijan State Economic University
Autor responsável pela correspondência
Email: mail_tagiyev@mail.ru
Azerbaijão, Baku
S. Dzhafarova
Azerbaijan State Economic University
Email: mail_tagiyev@mail.ru
Azerbaijão, Baku
A. Ahmedova
Azerbaijan State Economic University
Email: mail_tagiyev@mail.ru
Azerbaijão, Baku
G. Abdinova
Institute of Physics of the National Academy of Sciences of Azerbaijan
Email: mail_tagiyev@mail.ru
Azerbaijão, Baku
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