[en] In₂O₃:Ga₂O₃ (96:4 wt.%) nanosize films were deposited on glass-ceramic substrates by high-frequency magnetron sputtering. The surfaces of prepared films were investigated by scanning electron microscopy, the sizes of grains were determined, and the thicknesses of films were measured. The gas sensing structures was completed through ion-beam sputtering deposition of very thin palladium catalytic layer and gold interdigitated ohmic contacts on the prepared In₂O₃:Ga₂O₃ films. The response of the glass-ceramic/In₂O₃:Ga₂O₃ (96:4 wt.%)/Pd structure to different concentrations of the propane-butane mixture and also to methane at temperatures of a working body from 200 to 350 degree was investigated