Table of Contents Author Guidelines Submit a Manuscript
Advances in Materials Science and Engineering
Volume 2014 (2014), Article ID 821404, 8 pages
http://dx.doi.org/10.1155/2014/821404
Research Article

Structure and Physical Properties of PZT-PMnN-PSN Ceramics Near the Morphological Phase Boundary

1The Fundamental Science Department, Hue Industry College, Hue City, Vietnam
2Department of Physics, College of Sciences, Hue University, Hue City, Vietnam

Received 1 August 2013; Accepted 11 December 2013; Published 20 January 2014

Academic Editor: Mohammad Mahroof-Tahir

Copyright © 2014 Nguyen Dinh Tung Luan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The 0.9Pb(ZrxTi1−x)O3-0.07Pb(Mn1/3Nb2/3)O3-0.03Pb(Sb1/2Nb1/2)O3 (PZT-PMnN-PSN) ceramics were prepared by columbite method. The phase structure of the ceramic samples was analyzed. Results show that the pure perovskite phase is in all ceramics specimens. The effect of the Zr/Ti ratio on the region of morphotropic phase boundary for PZT-PMnN-PSN ceramics was studied. Experimental results show that the phase structure of ceramics changes from tetragonal to rhombohedral with the increase of the content of Zr/Ti ratio in the system. The composition of PZT-PMnN-PSN ceramics near the morphotropic phase boundary obtained is the ratio of Zr/Ti: 49/51. At this ratio, the ceramic has the optimal electromechanical properties: the , the , the  pC/N, the , high remanent polarization ( μC·cm−2), and low coercive field  kV·cm−1.