The Library
Unexpectedly high piezoelectricity of Sm-doped lead zirconate titanate in the Curie point region
Tools
Seshadri, Shruti B., Nolan, Michelle M., Tutuncu, Goknur, Forrester, Jennifer S., Sapper, Eva, Esteves, Giovanni, Granzow, Torsten, Thomas, Pam A., Nino, Juan C., Rojac, Tadej and Jones, Jacob L. (2018) Unexpectedly high piezoelectricity of Sm-doped lead zirconate titanate in the Curie point region. Scientific Reports, 8 . 4120. doi:10.1038/s41598-018-22566-5 ISSN 2045-2322.
|
PDF
WRAP-unexpectedly-high-piezoelectricity-Sm-doped-lead-zirconate-Thomas-2018.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution 4.0. Download (4Mb) | Preview |
Official URL: https://doi.org/10.1038/s41598-018-22566-5
Abstract
Large piezoelectric coefficients in polycrystalline lead zirconate titanate (PZT) are traditionally achieved through compositional design using a combination of chemical substitution with a donor dopant and adjustment of the zirconium to titanium compositional ratio to meet the morphotropic phase boundary (MPB). In this work, a different route to large piezoelectricity is demonstrated. Results reveal unexpectedly high piezoelectric coefficients at elevated temperatures and compositions far from the MPB. At temperatures near the Curie point, doping with 2 at% Sm results in exceptionally large piezoelectric coefficients of up to 915 pm/V. This value is approximately twice those of other donor dopants (e.g., 477 pm/V for Nb and 435 pm/V for La). Structural changes during the phase transitions of Sm-doped PZT show a pseudo-cubic phase forming ≈50 °C below the Curie temperature. Possible origins of these effects are discussed and the high piezoelectricity is posited to be due to extrinsic effects. The enhancement of the mechanism at elevated temperatures is attributed to the coexistence of tetragonal and pseudo-cubic phases, which enables strain accommodation during electromechanical deformation and interphase boundary motion. This work provides insight into possible routes for designing high performance piezoelectrics which are alternatives to traditional methods relying on MPB compositions.
Item Type: | Journal Article | ||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QC Physics | ||||||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Physics | ||||||||||||||||||
Library of Congress Subject Headings (LCSH): | Piezoelectricity, Lead zirconate titanate, Samarium, Curie temperature | ||||||||||||||||||
Journal or Publication Title: | Scientific Reports | ||||||||||||||||||
Publisher: | Nature Publishing Group | ||||||||||||||||||
ISSN: | 2045-2322 | ||||||||||||||||||
Official Date: | 7 March 2018 | ||||||||||||||||||
Dates: |
|
||||||||||||||||||
Volume: | 8 | ||||||||||||||||||
Article Number: | 4120 | ||||||||||||||||||
DOI: | 10.1038/s41598-018-22566-5 | ||||||||||||||||||
Status: | Peer Reviewed | ||||||||||||||||||
Publication Status: | Published | ||||||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||||||||||||
Date of first compliant deposit: | 13 March 2018 | ||||||||||||||||||
Date of first compliant Open Access: | 14 March 2018 | ||||||||||||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year