Table of Contents
Smart Materials Research
Volume 2011 (2011), Article ID 173064, 10 pages
http://dx.doi.org/10.1155/2011/173064
Research Article

Hydrostatic Parameters and Domain Effects in Novel 2-2 Composites Based on PZN-0.12PT Single Crystals

1Department of Physics, Southern Federal University, 5 Zorge Street, Rostov-on-Don 344090, Russia
2Scientific Design & Technology Institute “Piezopribor,” Southern Federal University, 10 Milchakov Street, Rostov-on-Don 344090, Russia

Received 18 October 2010; Accepted 26 January 2011

Academic Editor: Zhifei Shi

Copyright © 2011 Vitaly Yu. Topolov 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

A novel 0.88Pb(Zn1/3Nb2/3)O3-0.12PbTiO3 crystal/polymer composite with 2-2 connectivity is studied at variable orientations of spontaneous polarisation vector of the crystal component. Orientation and volume-fraction dependences of the hydrostatic piezoelectric coefficients dh*, eh*, and gh* and hydrostatic electromechanical coupling factor kh* are related to the important role of the piezoelectric and elastic anisotropy of single-domain layers of the 2-2 composite. The record value of |eh|77 C/m2 near the absolute-minimum point and the correlation between the hydrostatic (eh*) and piezoelectric (e3j*) coefficients and between the hydrostatic (gh*) and piezoelectric (g3j*) coefficients are first established. This discovery is of value for hydrostatic and piezotechnical applications. The hydrostatic performance of the composite based on the single-domain 0.88Pb(Zn1/3Nb2/3)O3-0.12PbTiO3 crystal is compared to the performance of the 2–2 composites based on either the same polydomain crystal or the related single-domain crystal.