Enhanced Piezoelectric Properties of Praseodymium-Modified Lead-Free (Ba0.85Ca0.15)(Ti0.90Zr0.10)O3 Ceramics

被引：73

作者：

Coondoo, Indrani ^{[1
,2
]}

Panwar, Neeraj ^{[3
]}

Amorin, Harvey ^{[4
]}

Ramana, Venkata Eskilla ^{[5
]}

Alguero, Miguel ^{[4
]}

Kholkin, Andrei ^{[1
,2
]}

机构：

[1] Univ Aveiro, Dept Mat & Ceram Engn, P-3800 Aveiro, Portugal

[2] Univ Aveiro, CICECO, P-3800 Aveiro, Portugal

[3] Cent Univ Rajasthan, Dept Phys, Ajmer, India

[4] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

[5] Univ Aveiro, Dept Phys, I 3N Aveiro, P-3800 Aveiro, Portugal

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2015年 / 98卷 / 10期

关键词：

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

D O I：

10.1111/jace.13713

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

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.

引用

页码：3127 / 3135

页数：9

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