The effect of tellurium impurities on the electrical conductivity (σ), Seebeck coefficient (α), and Hall coefficient R of extruded Bi85Sb15 + 0.001 аt.% Pb is studied in the temperature range 77–300 K. It is found that doping with tellurium impurities up to 0.001 at. % compensating acceptor Pb atoms leads to a strong decrease in the electron density and, consequently, to an increase in σ and significant decrease in the values of α and R. The materials obtained can be used as the n-branch of thermoelements operating at temperatures of ~77 K.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 11, pp. 170–173, November, 2018.
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Tagiev, M.M., Abdinova, G.D. Electrical and Galvanomagnetic Properties of Extruded Samples of Bi85Sb15 Solid Solutions with Pb and Te Impurities. Russ Phys J 61, 2135–2138 (2019). https://doi.org/10.1007/s11182-019-01647-6
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DOI: https://doi.org/10.1007/s11182-019-01647-6