Piezoelectric properties of sol-gel-derived ferroelectric and antiferroelectric thin layers

Journal Article · Sat Jan 01 04:00:00 EST 1994 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.355872· OSTI ID:5359600

Li, J; Viehland, D D; Tani, T; Lakeman, C D.E.; Payne, D A ^[1]

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1. Department of Materials Science and Engineering, Materials Research Laboratory and Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801 (United States)

The piezoelectric properties of ferroelectric and antiferroelectric thin layers were investigated by interferometry as a function of frequency and dc electric bias. Materials included: a ferroelectric lead zirconate titanate (PZT) with a Zr/Ti ratio of 53/47; a relaxor ferroelectric La-modified PZT with a Zr/Ti ratio of 70/30 and a La content of 7.8 at. %; and antiferroelectric lead zirconate. The hysteretic behavior of the piezoelectric coefficient due to polarization reversal was also studied. The layers were prepared by a sol-gel method, and were found to have properties similar to bulk ceramics. Significant strain levels could be achieved in the materials due to the relatively high electric strengths supported in thin-layer form. Polarization was found to be completely switchable between forward and reverse directions; however, the strain levels generated by switching were found to be inequivalent. In addition, pronounced piezoelectric relaxations and strong piezoelectric losses were observed.

• DOE Contract Number: FG02-91ER45439
• OSTI ID: 5359600
• Journal Information: Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 75:1; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ANTIFERROELECTRIC MATERIALS
CERAMICS
DIELECTRIC MATERIALS
ELECTRICITY
FERROELECTRIC MATERIALS
FILMS
FREQUENCY DEPENDENCE
HYSTERESIS
LEAD COMPOUNDS
MATERIALS
OXYGEN COMPOUNDS
PIEZOELECTRICITY
POLARIZATION
PZT
SOL-GEL PROCESS
THIN FILMS
TITANATES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
ZIRCONATES
ZIRCONIUM COMPOUNDS