Electrical conductivity study of the solubility limits of tin–antimony mixed perovskites
- 1 January 1982
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
- Vol. 78 (6) , 1983-1991
- https://doi.org/10.1039/f19827801983
Abstract
A series of tin–antimony mixed-oxide perovskites of the ABO3 type with A = Ba and B = Sn1–xSbx was synthesized using increasing amounts of antimony. The electrical conductivity of these solids was studied to try to detect a possible solid solution phase and to determine the valence state of the cations. Antimony dissolves in the stannic sites of the stannate perovskite structure up to a mole fraction of 0.17 in a pentavalent state (Sb5+). Above this limit, the variations in electrical conductivity have been ascribed to the formation of an insulating second solid phase whose existence was confirmed by X-ray analysis (formation of the antimonate pyrochlore structure, Ba2Sb2O7).Keywords
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