Cuprate-ferrate compositions for temperature independent resistive oxygen sensors

Titelangaben

Sahner, Kathy ; Straub, Jochen ; Moos, Ralf:
Cuprate-ferrate compositions for temperature independent resistive oxygen sensors.
In: Journal of Electroceramics. Bd. 16 (2006) Heft 2 . - S. 179-186.
ISSN 1573-8663
DOI: https://doi.org/10.1007/s10832-006-6203-x

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Abstract

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.