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Vanadium pentoxide films are synthesized by pyrolysis. The optimum conditions of heat treatment providing for the effective use of films as gas sensors are determined. The sensitivity of the films to different gaseous media (vapors of ethanol, methanol, and argon) is investigated by measuring the electrical conductivity in the temperature range 300-800 K.

The changes in the electrical conductivity of thin films of cobalt, nickel, and praseodymium oxides in air and in media with a high concentration of ozone and argon are investigated. The surface morphology and the initial stages of formation of the films are analyzed. The samples prepared are examined using different physicochemical methods, such as X-ray powder diffraction and differential thermal analyses.