X-RAY STUDY OF PHASE-TRANSITIONS IN SC(NH2)2

被引：11

作者：

TAKENAKA, H

TERAUCHI, H

KAWAMORI, A

机构：

[1] Department of Physics, Faculty of Science, Kwansei Gakuin University

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1979年 / 46卷 / 03期

关键词：

D O I：

10.1143/JPSJ.46.914

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

X-ray scattering intensities from thiourea, SC(NH2)2, have been carefully measured in several phases. Measurements of the diffuse scattering intensity near the point (0, 6, 0) were performed above Tc=169 K for c*-direction and b*-direction. The result suggests that the ferroelectric transition at Tc is due to the lattice instability of the transverse optical mode. The scattering intensity around (0, 6, δ) observed just above Tm=202 K shows a strong anisotropy elongating along the c*-direction. © 1979, THE PHYSICAL SOCIETY OF JAPAN. All rights reserved.

引用

页码：914 / 918

页数：5

共 15 条

[1] A NEUTRON DIFFRACTION DETERMINATION OF CRYSTAL STRUCTURES OF THIOUREA AND DEUTERATED THIOUREA ABOVE AND BELOW FERROELECTRIC TRANSITION [J].