LOW-TEMPERATURE PHASE-TRANSITION IN CS3D(SEO4)2

被引：13

作者：

ICHIKAWA, M ^{[1
]}

GUSTAFSSON, T ^{[1
]}

OLOVSSON, I ^{[1
]}

机构：

[1] UNIV UPPSALA,INST CHEM,S-75121 UPPSALA,SWEDEN

来源：

SOLID STATE COMMUNICATIONS | 1991年 / 78卷 / 06期

关键词：

D O I：

10.1016/0038-1098(91)90374-5

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The lattice constants of Cs3D(SeO4)2 have been measured in the temperature range 25-297 K using an automatic 4-circle X-ray diffractometer with a closed-cycle refrigerator. The changes in the lattice constants around the low-temperature phase transition (T(c3) congruent-to 180 K) seem more distinct than those in Rb3D(SeO4)2, but are still very small (10(-4)). The diffraction data show that the phase below T(c3) is monoclinic and the space group is most probably P2(1)/m. The relationship between the unit cells of different phases in Cs3D(SeO4)2 and the room-temperature phase in other M3H(XO4)2-type crystals is discussed.

引用

页码：547 / 551

页数：5

共 23 条

[1]

Baranov A. I., 1987, SOV PHYS-CRYSTALLOGR, V32, P400

[2] DIELECTRIC STUDY OF THE PHASE-TRANSITION IN K3H(SEO4)2 AND ISOTOPE EFFECT [J].