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An ammonia sensor based on Ag6Mo10O33 thick film was fabricated and tested. The morphology of the film was characterized by SEM. The electrical capacitance and impedance of the compound were investigated by exposing the film in air, air containing 500 vppm of H2, petroleum gas (PG) and NH3 independently at 350°C using AC impedance spectroscopy. When the film was exposed to air containing ammonia significant...
In2O3 thin film was fabricated using pulsed laser deposition technique. The structure and morphology of the thin film were characterized by X-ray diffraction and atomic force microscopy respectively. AC impedance of In2O3 thin film gas sensor were investigated at different temperatures (275 – 425 °C) when exposed into clean air and air containing NOx. Significant NOx sensing characteristics of thin...
Compounds with nominal compositions Cr 2-x Ti x O 3+δ (where x=0.1-0.4) were prepared by a solid state chemical reaction at 1273 K. Characterisation of the products by XRD showed the presence of a solid solution of TiO 2 in Cr 2 O 3 as the major phase along with CrTiO 3 as the minor phase. Conductivity studies indicated the...
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