Dielectric study of ferroelectric or relaxor behavior in Ba1-xNax(Ti0,8Sn0,2)1-xNbO3 ceramics

Abdelhedi Aydi (1) , Annie Simon (2) , Dominique Michau (2) , Régnault von Der Mühll (2) , Najmeddine Abdelmoula (1) , Hamadi Khemakhem (1)

1 LMF - Laboratoire des Matériaux Ferroélectriques
2 ICMCB - Institut de Chimie de la Matière Condensée de Bordeaux

The ferroelectric and piezoelectric properties of Ba1-xNax(Ti0,8Sn0,2)1-x-NbxO3 (BTSnNx0.2), the new lead-free ceramic, are investigated. At room temperature, X-ray diffraction (XRD) study suggests that the compositions have a single phase with cubic symmetry. The dielectric study reveals that the material has a ferroelectric or a relaxor behavior. The polarization state is checked by hysteresis and piezoelectric measurements.

Mots clés: Ceramic; Permittivity; Ferroelectric; Relaxor; Piezoelectricity

Domaines: Matériaux

Abdelhedi Aydi, Annie Simon, Dominique Michau, Régnault von Der Mühll, Najmeddine Abdelmoula, et al.. Dielectric study of ferroelectric or relaxor behavior in Ba1-xNax(Ti0,8Sn0,2)1-xNbO3 ceramics. Journal of Optoelectronics and Advanced Materials, 2012, 14 (3-4), pp.251-256. ⟨hal-00747373⟩