摘要
在低温下,用X射线四园衍射仪收集了BaTiO_3单晶的衍射数据237个,对其正交相晶体结构作了进一步研究并讨论了BaTiO_3相变的性质,结果表明,Ti原子在正交相是有序的。
The crystal structure of orthorhombic barium titanate was determined at 235K by means of the split atom method, based on the data collected by an X-ray four-circle diffractometer. It is shown that the Ti atom distributes orderly in orthorhombic phase. A comparision with the former results was made and the properties of phase transition of barium titanate were discussed as well.
出处
《北京工业大学学报》
CAS
CSCD
1991年第4期32-37,共6页
Journal of Beijing University of Technology
关键词
BaYiO3
晶体
正交相结构
铁电体
barium titanate, orthorhombic phase structure, order - disorder phase transition