SYMMETRY DETERMINATION OF LiZnTa3O9 AND LiCaTa3O9 CRYSTALS BY CBED
用会聚束电子衍射测定LiZnTa3O9,LiCaTa3O9的对称性

Symmetry determination by CBED has been carried out for LiZnTa3O9 and LiGaTa3O9 crystals, which were first grown in our laboratory, LiZnTa3O9 is rhombohedral with lattice parameters, a=0.557 nm, a=56.12°,The point group is 3m and the space group is R3c. LiCaTa3O9 is tetragonal with lattice parameters a=0.778 nm, c=0.783nm. The point group is 4/mmm.