| Issue |
Europhys. Lett.
Volume 33, Number 7, March I 1996
|
|
|---|---|---|
| Page(s) | 539 - 544 | |
| Section | Condensed matter: structure, thermal and mechanical properties | |
| DOI | https://doi.org/10.1209/epl/i1996-00375-2 | |
| Published online | 01 September 2002 | |
Kinetics effects in lithium-potassium tantalate crystals
Laboratoire d'Acoustique et Optique de la Matière
Condensée , Université P. et M. Curie, Tour 13, Case 78, 4 place
Jussieu, 75252 Paris Cedex 05, France
Received:
22
September
1994
Accepted:
11
January
1996
The study of the dielectric and acoustic constants, performed
in a 
crystal between 4 and 30 K, puts in evidence a strong analogy
between the kinetics of these two susceptibilities. In particular, the
two characteristic times measured for each of them have near values and
they are roughly constant in all the temperature range. An explanation
in terms of tetragonal domains, with quadrupolar order and dipolar
disorder, is suggested.
PACS: 62.80.+f – Ultrasonic relaxation / 72.22.Gm – Dielectric loss and relaxation
© EDP Sciences, 1996
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