Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 305, Issue 1-2, Pages 21-23Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/S0925-8388(00)00735-0
Keywords
rare earth; perovskite La1-xSrxCrO3; high-temperature conductivity; interconnector; XPS
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La1-xSrxCrO3 (x=0.0 similar to 0.5) samples were prepared by the sol-gel method. The crystal structures of La1-xSrxCrO3 at room temperature all are of the othorhombic perovskite GdFeO3-type. XPS analysis indicates that chromium ions are in mixed valence state. The introduction of Sr2+ into the lattice is compensated by the oxidation from Cr3+ to Cr6+ With x increasing, the amount of Cr6+ increases. The presence of the Cr6- is one of the key factors that affect the electric conductivity of La1-xSrxCrO3. (C) 2000 Elsevier Science S.A. All rights reserved.
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