Structure and Electrical Conductivity of (La_(0.9)Sr_(0.1))[(Ga_(1-x)Cr_x)_(0.8)Mg_(0.2)]O_(3-δ) (x = 0-0.35) Solid Solutions

摘要

(La_(0.9)Sr_(0.1))[(Ga_(1-x)Cr_x)_(0.8)Mg_(0.2)]O_(3-δ) (x = 0-0.35) perovskite-like solid solutions have been prepared by ceramic processing route, and their structural parameters, microstructure, and electrical conductivity have been determined. The results indicate that the cation substitutions reduce the unit-cell volume of the solid solutions and raise their total conductivity via an increase in electronic conductivity, while their ionic conductivity seems to decrease with increasing x.