Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
Incommensurate Structure and Stress-Induced Phase in {N(CD3)4}2ZnCl4
Hiroyuki MashiyamaSigetosi TanisakiKazuo Gesi
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1981 年 50 巻 5 号 p. 1415-1416

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Incommensurate-commensurate transition in {N(CD3)4}2ZnCl4 has been studied by simultaneous measurements of X-ray scattering and dielectric constant. The incommensurate satellite reflections are found at (h 0 l±ζ) with ζ=0.423 at room temperature. The dielectric constant along the a-axis drops discontinuously at 8.8°C on cooling, and ζ changes to 0.429. Below 1.8°C, the value of ζ locks into the commensurate value of (Remark: Graphics omitted.). A monoclinic phase is found under an external stress between the incommensurate and the commensurate phases. This new phase takes a commensurate structure with (Remark: Graphics omitted.). Some part of the crystal does not show the anomaly observed at 8.8°C in other sample.

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