| Numéro |
J. Phys. IV France
Volume 128, September 2005
|
|
|---|---|---|
| Page(s) | 55 - 60 | |
| DOI | https://doi.org/10.1051/jp4:2005128009 | |
J. Phys. IV France 128 (2005) 55-60
DOI: 10.1051/jp4:2005128009
Study of potassium-sodium-niobate alloys: A combined experimental and theoretical approach
J. Attia1, 2, L. Bellaiche1, P. Gemeiner2, B. Dkhil2 and B. Malic31 Physics Department University of Arkansas Fayetteville, AR 72701, USA
2 Laboratoire Structures, Propriétés et Modélisation des Solides, CNRS-UMR 8580, École Centrale Paris Grande Voie des vignes, 92925 Châtenay-Malabry, France
3 Josef Stefan Institute Jamova 39, 1000 Ljubljana, Slovenia
Abstract
Experimental and theoretical techniques are combined to
investigate properties of the environmentally-friendly and
technologically-promising (K0.5Na0.5)NbO3 (KNN) solid
solutions. Two long-range ferroelectric phases of orthorhombic and
tetragonal symmetry are reported above 250K. Furthermore, our dielectric
measurements, X-ray data and simulations suggest an unusual formation of
rhombohedral clusters within an orthorhombic matrix at lower temperature.
© EDP Sciences 2005