Ultrahigh piezoelectric strains in PbZr1-xTixO3 single crystals with controlled Ti content close to the tricritical point
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Intensive investigations of PbZr1-xTixO3 (PZT) materials with the ABO3 perovskite structure are connected with their extraordinary piezoelectric properties. Especially well known are PZT ceramics at the Morphotropic Phase Boundary (MPB), with x~0.48, whose applications are the most numerous among ferroelectrics. These piezoelectric properties are often obtained by doping with various ions at the B sites. Interestingly, we have found similar properties for undoped PZT single crystals with low Ti content, for which we have confirmed the existence of the tricritical point near x~0.06. For a PbZr0.95 ± 0.01Ti0.05 ∓ 0.01O3 crystal, we describe the ultrahigh strain, dielectric, optical and piezoelectric properties. We interpret the ultrahigh strain observed in the region of the antiferroelectric–ferroelectric transition as an inverse piezoelectric effect generated by the coexistence of domains of different symmetries. The complex domain coexistence was confirmed by determining optical indicatrix orientations in domains. The piezoelectric coefficient in this region reached an extremely high value of 5000 pm/V. We also verified that the properties of the PZT single crystals from the region near the tricritical point are incredibly susceptible to a slight deviation in the Ti content.
Date Issued
2022-10-01
Date Acceptance
2022-09-23
Citation
Materials, 2022, 15 (19)
ISSN
1996-1944
Publisher
MDPI
Journal / Book Title
Materials
Volume
15
Issue
19
Copyright Statement
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).
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Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Physics, Applied
Physics, Condensed Matter
Chemistry
Materials Science
Physics
ABO(3) perovskites
ferroelectric and antiferroelectric phase transitions
PZT single crystals
piezoelectricity
tricritical point
birefringence
polar regions
LEAD-ZIRCONATE-TITANATE
PHASE-TRANSITIONS
BEHAVIOR
CERAMICS
DIAGRAM
SYSTEM
Publication Status
Published
Article Number
6708
Date Publish Online
2022-09-27