 |
|
|
|
| HAL : hal-00602024, version 1 |
| DOI : 10.1142/S2010135X11000240 |
| Fiche détaillée |  Récupérer au format |
|
|
| Journal of Advanced Dielectrics 1, 2 (2011) 251-255 |
|
|
|
|
| New lead-free perovskite relaxor ceramics derived from BaTiO3 and containing scandium |
|
|
| Annie Simon 1Jean Ravez 1 |
|
|
| (2011) |
|
|
|
| New lead-free compositions of AMO3 perovskite type were synthesized in the BaTi1-x(Nb1/2Sc1/2)xO3(0 ≤ x ≤ 1) system, with regards to the comparable electronic configurations of the various 6-coordinated cations. Special solid state reaction was used. The effect of the replacement of titanium by scandium and niobium in the B-site on structural and dielectric properties was investigated. For this, we have used X-ray diffraction and dielectric characterizations. Dielectric measurements performed on ceramics with 0 ≤ x ≤ 0.25 composition revealed that the small change in composition from BaTiO3 has a strong influence on the dielectric properties: fast decreasing of the ferroelectric transition temperature for low values of x and evolution from classical ferroelectric for 0 ≤ x ≤ 0.075 to relaxor behavior for 0.075 < x ≤ 0.25. |
|
|
|
|
|
|
|
|
|
|
|
| 1 : | Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) |
|
|
|
CNRS : UPR9048 – Université de Bordeaux – Ecole Nationale Supérieure de Chimie, de Biologie et de Physique |
|
|
|
|
|
|
|
|
|
| Domaine | : | Chimie/Matériaux |
|
|
| Lead-free – Perovskite – Relaxor – BaTiO3 – Scandium |
|
|
|
| Liste des fichiers attachés à ce document : | |||||
|
|||||
|
|
|
| hal-00602024, version 1 | |
| http://hal.archives-ouvertes.fr/hal-00602024 | |
| oai:hal.archives-ouvertes.fr:hal-00602024 | |
| Contributeur : Stéphane Toulin | |
| Soumis le : Vendredi 3 Février 2012, 16:41:40 | |
| Dernière modification le : Vendredi 3 Février 2012, 16:45:39 | |
