摘要
不同氧分压下合成单一相LaMnO3+λ系列样品。利用X射线衍射数据和未知品系点阵常数计算程序(TREOR)测定了其晶体结构,真空样品为四方晶系,其余为三方晶系,且随氧分压升高晶胞参数呈规律性变化,并计算出各位占有率、La3+空位量和非整比结构式。
Series LaMnO3+λsamples were synthsized.x-- ray diffraction data and unknown crystal system program was used to determined the crystal structure sample 1# which synthesis under the vacancy condition was tetragonal, the other were trigonal,with oxygen pressure increase, the unit cell parameter change in regulation We also calculated the La3+emptiness site and B-site occupancy and structure
出处
《内蒙古民族大学学报(自然科学版)》
1996年第2期168-170,共3页
Journal of Inner Mongolia Minzu University:Natural Sciences
基金
内蒙古自然科学基金