Enhanced Piezoelectric Properties of Praseodymium-Modified Lead-Free (Ba0.85Ca0.15)(Ti0.90Zr0.10)O-3 Ceramics

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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)g(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.

keywords

DIELECTRIC-PROPERTIES; THIN-FILMS; FERROELECTRIC PROPERTIES; ELECTRICAL-PROPERTIES; TITANATE CERAMICS; SOLUBILITY LIMIT; SINGLE-CRYSTALS; SYSTEM; PR; COEFFICIENT

subject category

Materials Science

authors

Coondoo, I; Panwar, N; Amorin, H; Ramana, VE; Alguero, M; Kholkin, A

our authors

foto Andrei Kholkin

Andrei Kholkin

Principal Researcher
foto Indrani Coondoo

Indrani Coondoo

Junior Researcher

Groups

G2 - Photonic, Electronic and Magnetic Materials
G4 - Renewable Materials and Circular Economy

Projects

CICECO - Aveiro Institute of Materials (UID/CTM/50011/2013)

acknowledgements

One of the authors (IC) acknowledges the financial support from FCT, Portugal through SFRH/BPD/81032/2011. This work was developed in the scope of the project CICECO-Aveiro Institute of Materials (Ref. FCT UID/CTM/50011/2013), financed by national funds through the FCT/MEC and, when applicable, co-financed by FEDER under the PT2020 Partnership Agreement. Financial support of the Spanish MINECO project MAT2011-23709 is also acknowledged.

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Publication Details

type
Journal Article
year
2015
journal
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
volume
98
publisher
WILEY-BLACKWELL
issn
Feb-20
issue
10
digital object identifier
10.1111/jace.13713
web of science article identifier
WOS:000362599000024

Journal Metrics (JCR 2019)

Journal Impact Factor
3.502
Journal Impact Factor (5 yrs)
3.475
category normalized journal percentile
91.071

Citations

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