Oxygen Sensitive Resistance Properties of Sr2V2O7
钒酸锶(Sr2V2O7)氧敏电阻特性的研究

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 processof the data, some properties of Sr2V2O7 were achieved. Phase transformation has little influenceon the electrical properties, the activation energies for surface and bulk conductances are 1.91eVand 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.