Electron Crystallography of CaMoO4 Using High Voltage Electron Microscopy

摘要

The three-dimensional structure of an inorganic crystal,CaMoCO4 (space group I 4_1/a,a=5.198(69) A and c=11.458(41) A),was determined by electron crystallography utilizing a high voltage electron microscope.An initial structure of CaMoO4 was determined with 3-D electron diffraction patterns.This structure was refined by crystallographic image processing of high resolution TEM images.X-ray crystallography of the same material was performed to evaluate the accuracy of the TEM structure determination.The cell parameters of CaMoO4 determined by electron crystallography coincide with the X-ray crystallography result to within 0.033-0.040 A,while the atomic coordinates were determined to within 0.072 A.