The Effect of Heterogeneous Doping on Transport Properties of Lanthanum Dimolybdate
Author:
Partin Grigoriy S.1,
Animitsa Irina E.1,
Kochetova Nadezhda A.1
Affiliation:
1. Ural Federal University named after B.N. Yeltsin
Abstract
A heterogeneous doping method was used for the first time to modify the transport properties of the oxygen-ion conductor La(2)Mo(2)O(9). The effect of temperature and oxygen partial pressure in the gas phase on conductivity of the obtained composite {0.85La2Mo2O9–0.15La2Mo3O12} was studied. Introduction of 15 mol. % an inert low-conductive additional phase La(2)Mo(3)O(12) results in an increase in conductivity of the matrix phase by nearly 1 orders of magnitude. It is associated with appearance of a composite effect. However, there is no suppression of the α-La(2)Mo(2)O(9)↔β-La(2) Mo(2)O(9) phase transition. It is shown that the conductivity type of both lanthanum dimolybdate and composite based on it is predominantly ionic in the wide range of oxygen partial pressures
Publisher
Siberian Federal University
Subject
General Chemical Engineering,General Chemistry