Orientation-dependent piezoelectric properties in lead-free epitaxial 0.5BaZr{sub 0.2}Ti{sub 0.8}O{sub 3}-0.5Ba{sub 0.7}Ca{sub 0.3}TiO{sub 3} thin films

Journal Article · Mon Sep 16 00:00:00 EDT 2013 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4821918· OSTI ID:22217960

Luo, B. C. ^[1]; Wang, D. Y.; Li, S. ^[1]; Duan, M. M. ^[2]

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1. School of Materials Science and Engineering, The University of New South Wales, Sydney, NSW 2052 (Australia)
2. School of Science, Northwestern Polytechnical University, Xi'an 710072 (China)

Orientation-engineered 0.5BaZr{sub 0.2}Ti{sub 0.8}O{sub 3}-0.5Ba{sub 0.7}Ca{sub 0.3}TiO{sub 3} (BZT-BCT) thin films were deposited on La{sub 0.7}Sr{sub 0.3}MnO{sub 3}-coated SrTiO{sub 3} single-crystalline (001), (110), and (111) substrates by off-axis radio-frequency magnetron sputtering. X-ray diffraction confirmed a highly epitaxial growth of all the as-deposited films. It is believed the strong orientation dependence of ferroelectric and piezoelectric properties on the films is attributed to the relative alignment of crystallites and spontaneous polarization vector. The optimal ferroelectric response lies in the [001] direction, whereas a comparatively large effective piezoelectric coefficient d{sub 33,eff} of 100.1 ± 5 pm/V was attained in [111] BZT-BCT thin film, suggesting its potential application for high-performance lead-free piezoelectric devices.

• OSTI ID: 22217960
• Journal Information: Applied Physics Letters, Vol. 103, Issue 12; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
BARIUM COMPOUNDS
CALCIUM COMPOUNDS
DEPOSITS
EPITAXY
FERROELECTRIC MATERIALS
MAGNETRONS
MONOCRYSTALS
ORIENTATION
PIEZOELECTRICITY
POLARIZATION
RADIOWAVE RADIATION
SPUTTERING
STRONTIUM TITANATES
SUBSTRATES
TETRAGONAL LATTICES
THIN FILMS
X-RAY DIFFRACTION