| Numéro |
J. Phys. I France
Volume 7, Numéro 3, March 1997
|
|
|---|---|---|
| Page(s) | 543 - 552 | |
| DOI | https://doi.org/10.1051/jp1:1997106 | |
DOI: 10.1051/jp1:1997106
J. Phys. I France 7 (1997) 543-552
Laboratoire de Physique, Université de Bourgogne, UPRESA CNRS 5027, BP 138, 21004 Dijon, France
(Received 29 July 1996, revised 16 October 1996, accepted le 20 November 1996)
© Les Editions de Physique 1997
J. Phys. I France 7 (1997) 543-552
Non-Linearity Extremum in Niobium Doped Potassium Tantalate
O. Bidault and M. MaglioneLaboratoire de Physique, Université de Bourgogne, UPRESA CNRS 5027, BP 138, 21004 Dijon, France
(Received 29 July 1996, revised 16 October 1996, accepted le 20 November 1996)
Abstract
We report non-linear dielectric measurements in the KTaO
3:Nb system (
). The non-linear susceptibility diverges at low temperatures and reaches maximum values in the intermediate range (
). To account for this extremum non linearity, we propose a model of temperature dependent clusters which fits with a number
of experimental reports. We also suggest that this model may be applied to the related compounds SrTiO
3:Ca and KTaO
3:Ca.
© Les Editions de Physique 1997