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Thermoelectrical Properties of (Fe 2 Te 3 ) 1—x (In 2 Te 3 ) x Solid Solutions
Author(s) -
Abilov Ch. I.,
Gasanova M. Sh.,
Iskenderzade Z. A.
Publication year - 1997
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/1521-3951(199701)199:1<185::aid-pssb185>3.0.co;2-w
Subject(s) - crystallite , materials science , band gap , atmospheric temperature range , solid solution , condensed matter physics , scattering , analytical chemistry (journal) , chemistry , thermodynamics , metallurgy , optics , optoelectronics , physics , chromatography
The temperature dependences of thermo‐emf, electrical coefficients as well as the thermoelectrical Q ‐factor of synthesized polycrystalline alloys of (Fe 2 Te 3 ) 1— x (In 2 Te 3 ) x solid solutions with 0 ≤ x ≤ 0.01 have been investigated in the temperature range of 80 to 800 K. It has been found that in the whole temperature region the above alloys have semiconducting behaviour. Valus of the thermal band gap and thermoelectrical Q ‐factor have been calculated. The observed increase of the band gap may be due to a strengthening of the heteropolarity of a chemical bond. Alloys with a Q ‐factor exceeding unity at high temperatures have been obtained. The high values of the Q ‐factor in the alloys are explained by resonance scattering of charge carriers.