Oxygen sensitive resistance properties of Sr2V2O7

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.