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Synthesis and dielectric behavior of lead-free (Na0.5Bi0.5)1-xBaxTi1-yTayO3 piezoelectric ceramics

B. MATOVIC1,* , S. BOSKOVIC1, Lj. ZIVKOVIC2, Z. YU3, V. KRSTIC3

Affiliation

  1. Institute of Nuclear Sciences "Vinca," Lab.170, Beograd, Serbia and Montenegro
  2. Faculty of Electronic Engineering, University of Nis, Serbia and Montenegro
  3. Queen's University, Kingston, Canada

Abstract

Solid solution of (Na0.5Bi0.5)1-xBaxTi1-yTayO3 in the composition range x = 0.06 and 0.0 ≤ y ≤ 0.05 were prepared by conventional ceramics sintering technique. These new group of lead-free piezoelectric ceramic were studied for their crystal structure, dielectric and piezoelectric properties. It is shown that the system possess pure perovskite phase in its as calcined state. A morphotropic phase boundary (MPB) between tetragonal and rhombohedral phases appears at x = 0.06 and y = 0.05. The room temperature measurements of dielectric and piezoelectric properties reveal that the obtained ceramics with MPB composition has potential for use as piezoelectric material..

Keywords

Lead-free, Piezoelectric ceramics, Morphotropic phase boundary.

Submitted at: May 30, 2007
Accepted at: Sept. 18, 2007

Citation

B. MATOVIC, S. BOSKOVIC, Lj. ZIVKOVIC, Z. YU, V. KRSTIC, Synthesis and dielectric behavior of lead-free (Na0.5Bi0.5)1-xBaxTi1-yTayO3 piezoelectric ceramics, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 9, pp. 2804-2808 (2007)