Article ID Journal Published Year Pages File Type
7912922 Scripta Materialia 2015 4 Pages PDF
Abstract
A-site-deficient (Y, In) co-doped SrTiO3 was prepared by sol-gel method. A-site deficiency improved ionic conductivity and sinterability of materials. The ionic conductivity for (Y0.08Sr0.92)0.93Ti0.92In0.08O3−δ was 6.5 × 10−3 S cm−1 and increased about 169% compared with (Y0.08Sr0.92)0.97Ti0.92In0.08O3−δ at 800 °C. A-site deficiency decreased oxygen migration energy, therefore enhancing the conduction of oxygen ions. The optimized (Y0.08Sr0.92)0.97Ti0.92In0.08O3−δ sample exhibits an electrical conductivity in the order of 0.06-0.08 S cm−1 at 100-900 °C. A possible charge compensation mechanism of A-site-deficient (Y, In) co-doped SrTiO3 is also discussed.
Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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