Studies on structural and electrical properties of MnO films prepared by the spray pyrolysis method

MnO film samples of various thicknesses were prepared by the spray pyrolysis technique via the atomization of MnCl2 aqueous solutions onto glass substrates held at 350 0C using compressed air as a carrier gas. The crystal structure of the MnO films that was determined by x-ray diffraction was found to be polycrystalline. The crystalline structure of all the film samples showed a preferred orientation along the c-axis perpendicular to the substrate. The electrical parameters of the samples were obtained by applying the dc four-probe technique to rectangular-shaped samples. The effect of temperature on the electrical properties of MnO films is described here.