CRITICAL PHENOMENON IN A MOLECULAR-IONIC CRYSTAL (CD3ND3)(2)[SNCL6]

被引：1
|
作者：
YAMAMURO, O
MATSUO, T
SUGA, H
DAVID, WIF
IBBERSON, RM
LEADBETTER, AJ
机构：
[1] OSAKA UNIV,FAC SCI,DEPT CHEM,TOYONAKA,OSAKA 560,JAPAN
[2] DARESBURY RUTHERFORD APPLETON LAB,DIV ISIS,DIDCOT OX11 0QX,OXON,ENGLAND
来源：
PHYSICA B | 1995年 / 213卷
关键词：
D O I：
10.1016/0921-4526(95)00174-8
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The phase transition in (CD3ND3)(2) [SnCl6], for which the fluctuation of the order parameter is exceptionally strong among molecular systems, was studied by high-resolution neutron diffraction. The transition was accompanied by contraction of the a and expansion of the c axes as T-c = 154K was traversed from above. The square root of the c expansion was proportional to the occupancy of one of the deuterium sites which is the order parameter of the transition. The mechanism of this coupling is discussed.
引用
收藏
页码：414 / 416
页数：3
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