Journal article
Lead‐Free Piezoelectric Freestanding Films with Sheet Geometry‐Enhanced High‐Field Piezoelectric Coefficients
Journal of the American Ceramic Society, v 93(7), pp 1852-1855
Jul 2010
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
(Na0.5K0.5)NbO3‐based materials are promising lead‐free piezoelectrics because of their relatively high Curie temperatures and piezoelectric coefficients. Using precursor powders made by a coating method, (Na0.5K0.5)0.945Li0.055Nb0.96Sb0.04O3 thick films were successfully fabricated by pressureless sintering. Large high‐field −d31 value of 1700 pm/V, >20 times larger than that of the bulk counterpart, was observed at an applied dc electric field of 6–8 kV/cm. In situ X‐ray diffraction study showed that the large piezoelectric response was partially due to non‐180° domain switching under the electric field. Further investigation is needed to elucidate this enhancement effect. The enhanced high‐field piezoelectric property observed should encourage the use of lead‐free piezoelectrics.
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Details
- Title
- Lead‐Free Piezoelectric Freestanding Films with Sheet Geometry‐Enhanced High‐Field Piezoelectric Coefficients
- Creators
- Huidong LiWei‐Heng ShihWan Y Shih
- Publication Details
- Journal of the American Ceramic Society, v 93(7), pp 1852-1855
- Publisher
- Blackwell Publishing Inc; Malden, USA
- Number of pages
- 4
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems; Materials Science and Engineering
- Web of Science ID
- WOS:000278914500006
- Scopus ID
- 2-s2.0-77953777356
- Other Identifier
- 991014877975704721
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Data related to this publication, from InCites Benchmarking & Analytics tool:
- Web of Science research areas
- Materials Science, Ceramics