Magnetothermoelectric Properties of Extruded Bi85Sb15〈Pb,Te〉

Tağıyev M.

Inorganic Materials, vol.58, no.1, pp.26-32, 2022 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 58 Issue: 1
  • Publication Date: 2022
  • Doi Number: 10.1134/s0020168521120141
  • Journal Name: Inorganic Materials
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Chemical Abstracts Core, Chimica, Communication Abstracts, Compendex, INSPEC, Metadex, Civil Engineering Abstracts
  • Page Numbers: pp.26-32
  • Keywords: annealing, combined doping, electrical conductivity, extrusion, impurity
  • Azerbaijan State University of Economics (UNEC) Affiliated: Yes

Abstract

Abstract—: Bi85Sb15 + 0.01 at % Pb materials have been synthesized and their electrical conductivity σ, thermoelectric power α, Hall coefficient RH, and thermal conductivity χ have been measured as functions of temperature and magnetic field. Additional doping with up to 0.1 at % tellurium donor has been shown to compensate for the Pb acceptor effect, leading to an increase in electron concentration in the samples. As a result, σ and α approach those of Bi85Sb15 free of Pb impurities. Heat treatment partially eliminates structural defects, leading to an increase in carrier mobility and lattice thermal conductivity.