Ferroelectric, piezoelectric, and dielectric properties of BiScO{sub 3}-PbTiO{sub 3}-Pb(Cd{sub 1/3}Nb{sub 2/3})O{sub 3} ternary high temperature piezoelectric ceramics

Journal Article · Sun Jul 14 00:00:00 EDT 2013 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4812223· OSTI ID:22122810

Tianlong, Zhao ^[1]; Jianguo, Chen; Shuxiang, Dong ^[1]; Chunming, Wang ^[2]; Yang, Yu ^[3]

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1. Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871 (China)
2. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100 (China)
3. Faculty of Physics and Electronic Technology, Hubei University, Wuhan 430062 (China)

(0.95-x)BiScO{sub 3}-xPbTiO{sub 3}-0.05Pb(Cd{sub 1/3}Nb{sub 2/3})O{sub 3} (BS-xPT-PCN) high temperature piezoelectric ceramics near the morphotropic phase boundary (MPB) have been synthesized by traditional solid-state reaction methods. The microstructural morphology, phase structure, and electrical properties of BS-xPT-PCN ceramics were investigated in detail. X-ray diffraction analysis indicated BS-xPT-PCN ceramics have a pure perovskite structure. The coexistence of rhombohedral and tetragonal phases at MPB composition enhanced the polarizability by the coupling between two dynamically equivalent energy states, resulting in the improved piezoelectric and ferroelectric properties at MPB vicinity. The BS-xPT-PCN (x = 0.60) ceramics possess the optimal piezoelectric and ferroelectric properties with d{sub 33} = 505pC/N, k{sub p} = 55.9%, k{sub t} = 36.5%, strain = 0.23% (under the electric field 37.5 kV/cm), and P{sub r} = 39.7 {mu}C/cm{sup 2}. High temperature dielectric behaviors showed diffuse phase transition in BS-xPT-PCN ceramics. The Curie temperature T{sub c} was found to increase from 371 Degree-Sign C to 414 Degree-Sign C with x increasing from 0.58 to 0.62. All these results together with the good thermal stabilities make the BS-xPT-PCN ceramics promising candidates for high temperature piezoelectric applications.

• OSTI ID: 22122810
• Journal Information: Journal of Applied Physics, Vol. 114, Issue 2; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BISMUTH COMPOUNDS
CADMIUM COMPOUNDS
CERAMICS
CURIE POINT
DIELECTRIC PROPERTIES
ELECTRIC FIELDS
FERROELECTRIC MATERIALS
LEAD COMPOUNDS
MICROSTRUCTURE
NIOBIUM COMPOUNDS
OXYGEN COMPOUNDS
PEROVSKITE
PHASE TRANSFORMATIONS
PIEZOELECTRICITY
POLARIZABILITY
SCANDIUM COMPOUNDS
SOLIDS
TITANATES
TRIGONAL LATTICES
X-RAY DIFFRACTION