The mixed oxide W0.9Mo0.1O3 responds sensitively to oxidizing gases such as ozone and NOx in air and suffers only a mild interference from changes in relative humidity. The mixed oxide has a small activation energy for conduction (0.1 eV) and an unusual concentration dependence of response at low temperatures. Possible response mechanisms are considered.
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Merdrignac‐Conanec et al. (2002) studied this question.