正交、菱面体和立方钙钛矿结构间的关系  

Relationship Between Orthorhombic, Rhombohedral and Cubic Perovskite Crystal Structures

作　　者：唐贵德[1] 郝普[2] 祝玉华[3] 张晓丽[1] 刘国会[1] 齐伟华[1] 侯登录[1] 

机构地区：[1]河北师范大学物理系,河北石家庄050016 [2]石家庄学院物理系,河北石家庄050035 [3]唐山师范学院物理系,河北唐山063000

出　　处：《纳米科技》2008年第4期3-7,36,共6页

基　　金：国家自然科学基金（批准号：10074013）资助项目,河北省自然科学基金（批准号：E2006000168）,河北省教育厅科研计划项目（批准号：2005358）

摘　　要：通过对近年来正交、菱面体和立方三种对称类型钙钛矿锰氧化物实验结果的比较，研究了不同对称类型结构之间的关系，指出正交和菱面体结构偏离立方结构的幅度不大，所以在定性研究钙钛矿型锰氧化物某些物理问题时，可将三种对称类型统一用等效立方晶胞来表示。The relationships between orthorhombic, rhombohedral or cubic perovskite crystal structures were studied by examining experimental results about manganites possess an ABO3 type perovskite crystal structure published last years. Sketch map of atom distribution about the three kinds of ABO3 type perovskite crystal structure, and the relationships between them were given. It was pointed out that the magnitude of orthorhombic of rhombohedral structures perovskite crystal structures departed from cubic structure were very slight, and a equivalent cubic cell about the three perovskite crystal structures can therefore be used in the research of some physical problems about perovskite manganites.

关 键 词：晶体结构 晶格常数 钙钛矿型锰氧化物 等效立方晶胞 

分 类 号：TB303[一般工业技术—材料科学与工程]