, Volume 57, Issue 6, pp 808-810

Ionic conductivity of Bi12(V,Bi)O20 + δ single crystal (δ = 0.27) with a sillenite-type structure

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Abstract

The ionic conductivity of nonstoichiometric Bi12(V0.89Bi0.03)O20.27 single crystal with a sillenite-type structure has been investigated by impedance spectroscopy; its conductivity at 673 K is 2 × 10−3 S/cm, which is about two orders of magnitude higher than the conductivity of oxide superionic conductor single crystal Zr0.88Y0.12O1.94. As follows from crystallochemical analysis, ion transport in Bi12(V0.89Bi0.03)O20.27 is due to additional O2− ions, which arise due to oxygen nonstoichiometry.

Original Russian Text © N.I. Sorokin, 2012, published in Kristallografiya, 2012, Vol. 57, No. 6, pp. 911–913.