一、前言钙钛矿型氧化物的结构通式是ABO_3,通常A表示原子半径较大的d壳层充满的离子(如稀土离子);B表示原子半径较小的过渡金属离子。近十多年来,此类氧化物在完全氧化、部分氧化等方面得到广泛应用,尤其是它们有可能在汽车废气处理和氨氧化制备硝酸中代替贵金属Pt作为催化剂。另外,此类氧化物半导体的电学特 First, the foreword The perovskite type oxide structure general formula is ABO_3, usually A represents a large atomic radius d shell full of ions (such as rare earth ions); B represents a transition metal ions with smaller atomic radius. In recent ten years, such oxides have been widely used in complete oxidation and partial oxidation. In particular, they are likely to replace noble metal Pt as a catalyst in the production of nitric acid from automobile exhaust gas treatment and ammonia oxidation. In addition, the electrical characteristics of such oxide semiconductors