# Effect of aliovalent-cation substitution on the oxygen-ion conductivity of $Bi_4V_2O_{11}$

Sharma, Vandana and Shukla, AK and Gopalakrishnan, J (1992) Effect of aliovalent-cation substitution on the oxygen-ion conductivity of $Bi_4V_2O_{11}$. In: Solid State Ionics, 58 (3-4). pp. 359-362.

 PDF effects_of_aliovalent13thjuly.pdf Restricted to Registered users only Download (338Kb) | Request a copy

## Abstract

Up to 10 atom.% of $Li^+,Zn^{2+}, Al^{3+}, Ti^{4+} and Ge^{4+}$ readily substitute for vanadium in $Bi_4V_2O_{11}$ stabilizing $\alpha/\gamma$ structures. The $\gamma$-phases are good oxygen-ion conductors, the Ti-substituted $\gamma$-phase, $Bi_4V_{1.8}Ti_{0.2}O_{10.9}$, being the best ionic conductor among all the substituted bismuth vanadates investigated. It is conjectured that a high ionic potential of the dopant cation facilitates oxygen-ion mobility in the disordered phase of the substituted bismuth vanadate.

Item Type: Journal Article Copyright of this article belongs to Elsevier. Division of Chemical Sciences > Solid State & Structural Chemistry Unit 16 Aug 2006 19 Sep 2010 04:30 http://eprints.iisc.ernet.in/id/eprint/8039