【摘要】 近年来钙钛矿型氧化物材料由于其丰富的光学、电学和磁学性能引起人们极大的关注，特别是钙钛矿型稀土镍酸盐RNiO₃（R为稀土离子，R≠La）体系，因具有许多独特的光学性能、不同寻常的电荷有序和磁有序排列以及陡峭的金属-绝缘态相变等，其在开关、热致变色器件和传感器等方面有着重要的应用价值。本文从钙钛矿型稀土镍酸盐RNiO₃体系的晶体结构出发，综合介绍RNiO₃体系在金属-绝缘态相变、磁电性质以及光学特性等方面的研究进展，并对M-I相变的物理化学机理进行初步的讨论。更多还原

【Abstract】 In recent years, perovskite oxide materials have attracted great attention due to their optical, electrical and magnetic properties. Perovskite nickelate RNiO₃（R=rare earth ion, R≠La） has many unique properties, such as unique optical properties, unusual charge order and magnetic order, and metal-insulator phase transition, etc., which make it of important value in switches, thermochromic film manufacturing and sensors. Based on the crystal structures of the perovskite nickelate RNiO₃, this paper comprehensively introduces the research progress of RNiO₃ on the metal-insulator phase transition, electromagnetic properties and optical properties. Meanwhile, the mechanism of M-I phase transition for present systems is discussed preliminarily together.更多还原