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Phase structure, piezoelectric properties, and stability of new K0.48Na0.52NbO3–Bi0.5Ag0.5ZrO3 lead-free ceramics

Phase structure, piezoelectric properties, and stability of new K0.48Na0.52NbO3–Bi0.5Ag0.5ZrO3... In this work, (1 − x)(K0.48Na0.52)NbO3–x(Bi0.5Ag0.5)ZrO3 [(1 − x)KNN–xBAZ] lead-free piezoceramics was prepared by the conventional solid-state method, and a new phase boundary consisting of three phases [e.g., rhombohedral, orthorhombic, and tetragonal (R–O–T) phases] has been constructed by adding both (Bi0.5Ag0.5)2+ and Zr4+. The ceramic with x = 0.05 possesses an R–O–T phase coexistence. A large d 33 of ~347 pC/N and a high T C of ~318 °C have been shown in the ceramic with x = 0.05. In addition, such a ceramic also possesses enhanced thermal and temperature stability of piezoelectricity and ferroelectricity. Both the phase boundary and the grain size play a critical role in large piezoelectricity and good stability. We think that this material belongs to be one of the promising candidates for the high-temperature piezoelectric devices. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Materials Science: Materials in Electronics Springer Journals

Phase structure, piezoelectric properties, and stability of new K0.48Na0.52NbO3–Bi0.5Ag0.5ZrO3 lead-free ceramics

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References (25)

Publisher
Springer Journals
Copyright
Copyright © 2014 by Springer Science+Business Media New York
Subject
Material Science; Optical and Electronic Materials; Characterization and Evaluation of Materials
ISSN
0957-4522
eISSN
1573-482X
DOI
10.1007/s10854-014-2006-z
Publisher site
See Article on Publisher Site

Abstract

In this work, (1 − x)(K0.48Na0.52)NbO3–x(Bi0.5Ag0.5)ZrO3 [(1 − x)KNN–xBAZ] lead-free piezoceramics was prepared by the conventional solid-state method, and a new phase boundary consisting of three phases [e.g., rhombohedral, orthorhombic, and tetragonal (R–O–T) phases] has been constructed by adding both (Bi0.5Ag0.5)2+ and Zr4+. The ceramic with x = 0.05 possesses an R–O–T phase coexistence. A large d 33 of ~347 pC/N and a high T C of ~318 °C have been shown in the ceramic with x = 0.05. In addition, such a ceramic also possesses enhanced thermal and temperature stability of piezoelectricity and ferroelectricity. Both the phase boundary and the grain size play a critical role in large piezoelectricity and good stability. We think that this material belongs to be one of the promising candidates for the high-temperature piezoelectric devices.

Journal

Journal of Materials Science: Materials in Electronics – Springer Journals

Published: May 18, 2014

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