On the Synthesis of PdO−RuO2 Solid-Solution Thin Films by Thermal Oxidation and Investigation of Their Gas-Sensing Properties.

Autor: Kuschev, S. B., Ryabtsev, S. V., Soldatenko, S. A., Sinelnikov, A. A., Dontsov, A. I., Maksimenko, A. A., Turaeva, T. L.
Zdroj: Journal of Surface Investigation: X-Ray, Synchrotron & Neutron Techniques; Jan2019, Vol. 13 Issue 1, p87-91, 5p
Abstrakt: The phase and structural transformations that Pd–Ru(7 at %) solid solution thin films undergo during thermal oxidation in oxygen in the temperature range 570–1070 K are studied by transmission electron microscopy, high-energy electron diffraction, and reflection high-energy electron diffraction. With increasing oxidation temperature, the phase composition is found to change in the order: Pd–Ru(7 at %) solid solution → Pd–Ru(7 at %) + PdO + RuO2 → PdO + RuO2 → PdO–RuO2 solid solution. We show that the complete oxidation of Pd–Ru(7 at.%) thin films to form single-phase films of the PdO–RuO2 solid solution takes place at a temperature of 100 K higher compared to pure palladium films. The resistance sensor response of the prepared PdO−RuO2 oxide films to ozone in air is studied for the first time. The results suggest that this is a promising material for use in gas-sensing applications. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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