crystal X-ray diffraction method in a straightforward manner. The space group was confirmed
to be P2 lm as Michal and Sinclair reported, and their atomic parameters were refined to
those with the R-factor of 4.5%(wR= 5.7%) with anisotropic temperature factors. The result
was consistent not only in the R-factor, but also in bond lengths between atoms. The
presence of the faults on (001) M plane was rationalized in view of the presence of the …