Abstract: The possibility of Sr₂V₂O₇ to be a resistive oxygen-sensitive material was evaluated by studying its electrical properties, bulk and surface resistances of
ceramic Sr₂V₂O₇ at different temperatures and/or oxygen partial pressures were measured experimentally. After mathematical process of the data, some properties of
Sr₂V₂O₇ were achieved. Phase transformation has little influence on the electrical properties; the activation energies for surface and bulk conductances
are 1.91eV and 1.31eV respectively; It has an oxygen sensitive factor m=6 and a relative high temperature coefficient. Sr₂V₂O₇ needs surface
modification if it serves as a potential exhaust gas sensor material.

Key words: stronium vanadium oxide, oxygen sensitivity, electrical properties, ceramics