EXTRUDED MATERIAL BASED ON BI<sub>0.85</sub>SB<sub>0.15</sub> FOR THERMOELECTRIC CONVERTERS

Tagiyev M. M., Abdinova G. D., Barkhalov B. S.

RUSSIAN PHYSICS JOURNAL, vol.64, no.9, pp.1592-1598, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 64 Issue: 9
  • Publication Date: 2022
  • Doi Number: 10.1007/s11182-022-02496-6
  • Journal Name: RUSSIAN PHYSICS JOURNAL
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, INSPEC, zbMATH
  • Page Numbers: pp.1592-1598
  • Azerbaijan State University of Economics (UNEC) Affiliated: Yes

Abstract

In order to create a sufficiently strong material with thermo- and magneto-thermoelectric figure of merit, close to that for single-crystal samples, extruded samples of Bi0.85Sb0.15 solid solution were obtained on the basis of Bi-Sb systems. The effect of composition, heat treatment mode, grain size, and tellurium impurities on their thermoelectric properties was investigated in the temperature range similar to 77-300 K and at magnetic field strength H up to similar to 74.10(4) A/m. We managed to obtain extruded material with thermo- and magneto-thermoelectric quality factors similar to 6.2.10(-3) K-1 and similar to 7.2.10(-3)K(-1) at similar to 77 K, respectively, with strengths similar to 3 times higher than the strength of single-crystal samples of this composition, which are suitable for use in low-temperature thermoelectric converters.