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

A. AYDI1,* , A. SIMON2, D. MICHAU2, R. VON DER MÜHLL2, N. ABDELMOULA1, H. KHEMAKHEM1

Affiliation

  1. Laboratoire des Matériaux Ferroélectriques, Faculté des Sciences de Sfax, 3018 Sfax, Tunisie
  2. CNRS, Université de Bordeaux, ICMCB, 87 Avenue Dr A. Schweitzer, Pessac, F - 33608

Abstract

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..

Keywords

Ceramic, Permittivity, Ferroelectric, Relaxor, Piezoelectricity.

Submitted at: Feb. 4, 2012
Accepted at: April 11, 2012

Citation

A. AYDI, A. SIMON, D. MICHAU, R. VON DER MÜHLL, N. ABDELMOULA, H. KHEMAKHEM, Dielectric study of ferroelectric or relaxor Behavior in Ba1-xNax(Ti0,8Sn0,2)1-xNbO3 ceramics, Journal of Optoelectronics and Advanced Materials Vol. 14, Iss. 3-4, pp. 251-256 (2012)