Investigations of high temperature phase transitions in (NH3C2H5)2CuCl4 crystals

被引：14
|
作者：
Kapustianik, V
Korchak, Y
Sveleba, S
Tchukvinskyi, R
Girnyk, I
机构：
[1] Lviv Franko Univ, Dept Phys, Lab Ferr Phys, UA-290005 Lviv 5, Ukraine
[2] Univ Wroclaw, Inst Phys Expt, PL-50204 Wroclaw, Poland
[3] Inst Phys Opt, UA-290005 Lviv 5, Ukraine
来源：
ACTA PHYSICA POLONICA A | 1999年 / 95卷 / 03期
关键词：
D O I：
10.12693/APhysPolA.95.351
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
On the basis of dilatometric, optical, and dielectric investigations of (NH3C2H5)(2)CuCl4 crystals the existence of phase transitions at T-1 = 364 and T-2 = 356 K was confirmed. Anomalous behaviour of the thermal expansion coefficient and optical birefringence around T-3 = 330 K was related to earlier unknown phase transition. Besides, it was shown that these crystals are characterised by considerable protonic conductivity, the nature of which is fairly well explained in the framework of Grotthus mechanism of proton transport.
引用
收藏
页码：351 / 357
页数：7
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