Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 21, Issue 10-11, Pages 1831-1835Publisher
ELSEVIER SCI LTD
DOI: 10.1016/S0955-2219(01)00125-X
Keywords
electrical conductivity; ionic conductivity; perovskites; strontium titanate ferrites; thermal expansion
Categories
Ask authors/readers for more resources
Both physical properties and the level of mixed conduction obtained in La and Fe doped SrTiO3 are widely influenced by composition. In contrast to La free compositions, La containing compositions show high stability against reaction with yttria stabilised zirconia (YSZ) and a closely matching thermal expansion coefficient (similar to1 X 10(-5) K-1). Faradaic efficiency measurements for Sr0.97Ti0.6Fe0.4O3-delta, and La0.4Sr0.5Ti0.6Fe0.4O3-delta show ionic transference numbers in air between 5 x 10(-3) to 4 x 10(-2), and 2 x 10(-4) to 6 x 10(-4) respectively, decreasing with decreasing temperature. The substitution of La for Sr is observed to deplete the level of both ionic and total conductivity obtained in air. (C) 2001 Published by Elsevier Science Ltd.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available