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Ferroelectric and Piezoelectric Properties of Fine‐Grained Na 0.5 K 0.5 NbO 3 Lead‐Free Piezoelectric Ceramics Prepared by Spark Plasma Sintering
Abstract
Lead‐free piezoelectric ceramics have received attention because of increasing interest in environmental protection. Niobate ceramics such as NaNbO 3 and KNbO 3 have been studied as promising Pb‐free piezoelectric ceramics, but their sintering densification is fairly difficult. In the present study, highly dense Na 0.5 K 0.5 NbO 3 ceramics were prepared using spark plasma sintering (SPS). Although the SPS temperature was as low as 920°C, the density of the Na 0.5 K 0.5 NbO 3 solid solution ceramics was raised to 4.47 g/cm 3 (>99% of the theoretical density). After post‐annealing in air, reasonably good ferroelectric and piezoelectric properties were obtained in the Na 0.5 K 0.5 NbO 3 ceramics with submicron grains. The crystal phase of the Na 0.5 K 0.5 NbO 3 has an orthorhombic structure. The Curie temperature is 395°C and the piezoelectric parameter ( d 33 ) of the Na 0.5 K 0.5 NbO 3 ceramics reached 148 pC/N.
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Cited by
Ultrahigh Piezoelectric Properties in Textured (K,Na)NbO3‐Based Lead‐Free Ceramics
Li, P., Zhai, J., Shen, B., Zhang, S., Li, X., Zhu, F., & Zhang, X. (2018) · Advanced Materials · doi:10.1002/adma.201705171 · Cited by 555
Wang, P., Li, Y., & Lu, Y. (2011) · Journal of the European Ceramic Society · doi:10.1016/j.jeurceramsoc.2011.04.023 · Cited by 342
Construction of Inorganic Bulks through Coalescence of Particle Precursors
Mu, Z., Tang, R., & Liu, Z. (2021) · Nanomaterials · doi:10.3390/nano11010241 · Cited by 20
Metadata
- Authors
- Li, J., Wang, K., Zhang, B., & Zhang, L.
- Venue
- Journal of the American Ceramic Society
- Publisher
- Wiley
- Published
- 2005-11-23
- Volume
- 89
- Issue
- 2
- Pages
- 706-709
- ISSN
- 0002-7820 (ISSN-L)
- 1551-2916
- OpenAlex
- W2149463365
- Cited by
- 467
- References
- 0
- FWCI
- 12.90
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Ferroelectric and Piezoelectric Properties of Fine‐Grained Na 0.5 K 0.5 NbO 3 Lead‐Free Piezoelectric Ceramics Prepared by Spark Plasma Sintering. https://app.cochat.ai/papers/10.1111/j.1551-2916.2005.00743.x
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- Li, J., Wang, K., Zhang, B., & Zhang, L. (2006). Ferroelectric and Piezoelectric Properties of Fine‐Grained Na 0.5 K 0.5 NbO 3 Lead‐Free Piezoelectric Ceramics Prepared by Spark Plasma Sintering. Journal of the American Ceramic Society. https://doi.org/10.1111/j.1551-2916.2005.00743.x
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