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2006 | 109 | 2 | 171-178
Article title

Dielectric and Birefringent Properties of [(CH_3)_2NH_2]_5Cd_2CuCl_{11} Solid Solutions in the Region of Their Phase Transitions

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EN
Abstracts
EN
On the basis of the optical and dielectric investigations of [(CH_3)_2NH_2]_5Cd_2CuCl_{11} solid solutions the existence of phase transitions at T_1=175 K and T_2=117.5 K was confirmed. Both phase transitions were found to be shifted toward lower temperatures with respect to the corresponding transitions in the "host" [(CH_3)_2NH_2]_5Cd_3Cl_{11} crystals. It was found that the proton conductivity in [(CH_3)_2NH_2 ]_5Cd_2CuCl_{11} crystals is realized through the Grotthus mechanism. The investigations of the birefringent properties confirmed existence of the structural changes at T_0=320 K connected with the complex co-operative effect involving weakening of the hydrogen bonds and modification of the Jahn-Teller distortion with temperature.
Keywords
EN
Publisher

Year
Volume
109
Issue
2
Pages
171-178
Physical description
Dates
published
2006-02
received
2005-06-06
(unknown)
2005-10-10
(unknown)
2005-11-29
Contributors
  • Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland
author
  • Lviv Ivan Franko National University, Scientific-Technical and Educational Center of Low Temperature Studies, Dragomanova St. 50, 79005, Lviv, Ukraine
author
  • Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland
author
  • Institute of Experimental Physics, University of Wrocław, pl. M. Borna 9, 50-204 Wrocław, Poland
author
  • Lviv Ivan Franko National University, Scientific-Technical and Educational Center of Low Temperature Studies, Dragomanova St. 50, 79005, Lviv, Ukraine
author
  • Lviv Ivan Franko National University, Scientific-Technical and Educational Center of Low Temperature Studies, Dragomanova St. 50, 79005, Lviv, Ukraine
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv109n204kz
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