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http://hdl.handle.net/10773/19930
Title: | Enhanced Piezoelectric Properties of Praseodymium-Modified Lead-Free (Ba0.85Ca0.15)(Ti0.90Zr0.10)O-3 Ceramics |
Author: | Coondoo, Indrani Panwar, Neeraj Amorin, Harvey Ramana, Venkata Eskilla Alguero, Miguel Kholkin, Andrei |
Keywords: | DIELECTRIC-PROPERTIES THIN-FILMS FERROELECTRIC PROPERTIES ELECTRICAL-PROPERTIES TITANATE CERAMICS SOLUBILITY LIMIT SINGLE-CRYSTALS SYSTEM PR COEFFICIENT |
Issue Date: | 2015 |
Publisher: | WILEY-BLACKWELL |
Abstract: | The role of Pr6O11 addition on the structure, microstructure, electrical, and electromechanical properties of lead-free (Ba0.85Ca0.15)(Ti0.90Zr0.10)O-3 piezoelectric ceramics has been systemically investigated. Addition of praseodymium (Pr) results in improved ferroelectric and piezoelectric properties. XRD analysis revealed the co-existence of rhombohedral (R) and tetragonal (T) phases at room temperature. High remanent polarization values (2P(r) similar to 17C/cm(2)) and loop squareness of nearly 0.87 were obtained for the BCZT-0.04wt%Pr ceramic, along with high piezoelectric coefficient (d(33)=435pC/N) and transduction coefficient [(d(33<bold>)g(</bold>33))=11589x10(-15)m(2)/N]. Results are correlated with the crystal structure and microstructure that significantly influence the ferroelectric and piezoelectric properties near the R-T phase transition point. This material seems to be especially suitable for energy harvesting applications, exhibiting outstanding figure of merit. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/19930 |
DOI: | 10.1111/jace.13713 |
ISSN: | 0002-7820 |
Publisher Version: | 10.1111/jace.13713 |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Enhanced Piezoelectric Properties of Praseodymium-Modified Lead-Free (Ba0.85Ca0.15)(Ti0.90Zr0.10)O-3 Ceramics_10.1111jace.13713.pdf | 1.72 MB | Adobe PDF |
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