Journal
JOURNAL OF ELECTROCERAMICS
Volume 16, Issue 2, Pages 179-186Publisher
SPRINGER
DOI: 10.1007/s10832-006-6203-x
Keywords
perovskite; generalized effective media theory; lanthanum cuprate; lanthanum ferrate; strontium titanate
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In this contribution, the binary ceramic system La2CuO4-LaFeO3 is investigated for resistive oxygen sensor applications. The temperature-independent characteristics that are observed for copper contents of 30% or higher are of particular interest. In order to correlate sensor characteristics and material composition, an initial model describing the complex two-phase system is proposed. It is based on the so-called generalized effective media theory (GEMT), a useful tool for describing bi-phase composites. The fitting procedure allows to predict the actual sensor characteristics determined by the experiments.
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