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Electrical and Structural Properties of the Tungsten Bronze Bi 4 W 20 O 62
Author(s) -
Conan A.,
Bonnet A.,
Morsli M.
Publication year - 1989
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/pssb.2221550231
Subject(s) - seebeck coefficient , bronze , tungsten , materials science , bismuth , electrical resistivity and conductivity , atmospheric temperature range , phase (matter) , crystallite , perovskite (structure) , mineralogy , metallurgy , composite material , thermodynamics , crystallography , thermal conductivity , chemistry , electrical engineering , physics , organic chemistry , engineering
Transport coefficient measurements (electrical conductivity and thermoelectric power) are performed on compact bars of a bismuth tungsten bronze compound Bi 4 W 20 O 62 (labelled as B‐phase) in polycrystalline form over the temperature range 100 to 500 K. Experimental results are discussed in comparison with those obtained recently on a compound, labelled as A‐phase and which is prepared at a lower temperature. A single band model accounts for all the experimental results. The main differences which are observed in the electrical properties of the two phases are a consequence of the less disordered HTB and perovskite intergrowth sequences for the high‐temperature phase.