Hydrothermal synthesis of vo2 films from alcohol solution

M phase vanadium dioxide was firstly synthesized with alcohol as the media instead of water via a simple hydrothermal method on single-crystal r-sapphire substrates. The resulting materials demonstrate a sharp dielectric-metal transition with a change in electrical resistance of about 4 orders of magnitude near the phase transition temperature (68°C). The conditions for synthesizing films comparable in electrophysical characteristics to analogs obtained in aqueous media are established. The proposed method enlarges possibilities for the hydrothermal synthesis of film oxide materials