Investigations of High Temperature Phase Transitions in (NH_{3}c_{2}H_{5})_{2}CuCl_{4} Crystals

• Authors: V. Kapustianik , Yu. Korchak , S. Sveleba , R. Tchukvinskyi , I. Girnyk
• Languages of publication: EN

Abstracts

EN

On the basis of dilatometric, optical, and dielectric investigations of (NH_{3}C_{2}H_{5})_{2}CuCl_{4} 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.

Keywords

EN

64.70.-p

Discipline

• 64.70.-p: Specific phase transitions

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1999
• Volume: 95
• Issue: 3
• Pages: 351-357

Dates

published

1999-03

received

1998-12-09

Contributors

author

V. Kapustianik

• Laboratory of Ferroics Physics, Physical Dept., Lviv Franko University, Kyryla i Mefodiya st. 8, 290005 Lviv-5, Ukraine

author

Yu. Korchak

• Laboratory of Ferroics Physics, Physical Dept., Lviv Franko University, Kyryla i Mefodiya st. 8, 290005 Lviv-5, Ukraine

author

S. Sveleba

• Laboratory of Ferroics Physics, Physical Dept., Lviv Franko University, Kyryla i Mefodiya st. 8, 290005 Lviv-5, Ukraine

author

R. Tchukvinskyi

• Institute of Experimental Physics, University of Wrocław, Pl. M. Borna 9, 50-204 Wrocław, Poland

author

I. Girnyk

• Institute of Physical Optics, Dragomanova st. 23, 290005 Lviv-5, Ukraine

Identifiers

DOI

10.12693/APhysPolA.95.351