Dielectric, piezoelectric, and pyroelectric properties of lead zirconate-lead zinc niobate ceramics

Journal Article · Thu Jun 01 00:00:00 EDT 1989 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1989.tb06261.x· OSTI ID:6270164

Takenaka, T ^[1]; Bhalla, A S; Cross, L E ^[2]; Sakata, K ^[3]

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1. Science Univ. of Tokyo (Japan)
2. Pennsylvania State Univ., University Park, PA (United States). Materials Research Lab.
3. Science Univ. of Tokyo, Noda, Chiba (Japan). Faculty of Science and Technology

This paper reports on piezoelectric and pyroelectric ceramics consisting of antiferroelectric lead zirconate (PZ) and relaxor ferroelectric lead zinc niobate (PZN) studied from an application viewpoint of the field-induced antiferroelectric-to-ferroelectric phase transition. An antiferroelectric-to-ferroelectric phase transition. An antiferroelectric-ferroelectric phase boundary exists in PbZr{sub x}(Zn{sub 1/3}Nb{sub 2/3}){sub 1 {minus} x}O{sub 3}(PZZN-1000x) close to x = 0.93 to 0.94 at room temperature. A new ferroelectric rhombohedral phase change, F{alpha}-F'{alpha} at low temperature is found and studied by the temperature dependence of the pyroelectric coefficient. Electrical poling in these ceramics is easy, and the coercive field E{sub c} {approx} 8 to 10 kV/cm is rather low. Samples with compositions in the range PZZN-86 to PZZN-92 have a large electromechanical coupling constant, k (k, and k {sub 15} {approx} 50% to 60%), and a low dielectric constant, {epsilon}{sub s}, ({epsilon}{sup T}{sub 33}/{epsilon}{sub 0} = 260 to 320, {epsilon}{sup T}{sub 11} {epsilon}{sub 0} = 380). PZZN ceramics appear to be potential candidates for high-frequency ultrasonic transducers used in the thickness shear mode. The pyroelectric figure of merit (F{sub v}) of these ceramics is comparable to the values published for the PZT-based or PbTiO{sub 3}-based materials.

• OSTI ID: 6270164
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 72:6; ISSN JACTA; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ANTIFERROELECTRIC MATERIALS
DIELECTRIC MATERIALS
DIELECTRIC PROPERTIES
ELECTRICAL PROPERTIES
ELECTRICITY
LEAD COMPOUNDS
MATERIALS
NIOBATES
NIOBIUM COMPOUNDS
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PIEZOELECTRICITY
PYROELECTRIC EFFECT
REFRACTORY METAL COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONATES
ZIRCONIUM COMPOUNDS