Ionic Conductivity of Pb and Co-Substituted Bi2VO5.5 Single Crystal.

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  • Pb, Co同時置換Bi<sub>2</sub>VO<sub>5.5</sub>単結晶におけるイオン導電率
  • Ionic Conductivity of Pb and Co-Substituted Bi2V05.5 Single Crystal

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Abstract

A single crystal of Bi1.94Pb0.06V0.9Co0.1O5.32, in which the Bi and V sites of layer-structured Bi2VO5.5 were substituted simultaneously, was prepared for the first time and the effects of the Pb substitution on the conductivities in a(b)- and c-axis directions were investigated. Any improvements of ionic conductivity along c-axis perpendicular to the (Bi2O2)2+ layer was not observed compared with that in single crystal without Pb substitution. From the results of conductivity and Rietveld refinement of XRD pattern, oxygen vacancies generated by Pb substitution were suggested to locate in the pseudo-perovskite block, not in the (Bi2O2)2+ layer.

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