X-Ray Diffraction Study of the Structures of Normal and Ferroelectric [N(CH3)4]2ZnCl4
1987 年 56 巻 10 号 p. 3543-3552
詳細
1987 年 56 巻 10 号 p. 3543-3552
The crystal structure of [N(CH3)4]2ZnCl4 was studied at three temperatures, 30, 60 and 90°C, in the paraelectric phase and at 5.5°C in the ferroelectric phase by using the X-ray reflection data collected by an automatic four-circle diffractometer. The split-atom method and the significance test showed that the constituent ions are in disorder in the normal phase. In the ferroelectric phase, positional and thermal parameters and occupation probability of ions were calculated by the least-squares method. The density modulation of ZnCl4 and that of one kind of N(CH3)4 ion were closely incorporated.
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