Hydrothermal (K1-xNax)NbO3 Lead-free Piezoelectric Ceramics

T. Maeda, N. Takiguchi, T. Morita, M. Ishikawa, T. Hemsel, Journal of Korean Physical Society 57 (2010) 924–928.

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Abstract
As a lead-free piezoelectric ceramics, (K,Na)NbO$_{3}$ is a promising material because of its good piezoelectric properties. In this study, (K$_{1-x}$Na$_{x}$)NbO$_{3}$ ceramics were synthesized from a KNbO$_{3}$ and NaNbO$_{3}$ mixture powder prepared by the hydrothermal reaction. The hydrothermal reaction enables the production of high quality powder for the ceramics fabrication process. To obtain (K$_{1-x}$Na$_{x}$)NbO$_{3}$ ceramics, these two powders KNbO$_{3}$ and NaNbO$_{3}$ were mixed and then sintered together. X-Ray diffraction analysis revealed that the solid solution ceramics (K$_{1-x}$Na$_{x}$)NbO$_{3}$ was produced by the sintering process. The K/Na ratio in (K$_{1-x}$Na$_{x}$)NbO$_{3}$ ceramics was optimized for the best piezoelectric properties. The optimized forms was (K$_{0.48}$Na$_{0.52}$)NbO$_{3}$, which showed the following piezoelectric properties; k$_{33}$=0.56, d$_{33}$=114pC/N. In addition, the ferroelectric properties, P$_{r}$=7.72mC/cm$^{2}$, E$_{c}$=857V/mm, and the Curie temperature T$_{c}$=420$_{o}$C were also measured.
Publishing Year
Journal Title
Journal of Korean Physical Society
Volume
57
Issue
4
Page
924-928
ISSN
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Maeda T, Takiguchi N, Morita T, Ishikawa M, Hemsel T. Hydrothermal (K1-xNax)NbO3 Lead-free Piezoelectric Ceramics. Journal of Korean Physical Society. 2010;57(4):924-928. doi:10.3938/jkps.57.924
Maeda, T., Takiguchi, N., Morita, T., Ishikawa, M., & Hemsel, T. (2010). Hydrothermal (K1-xNax)NbO3 Lead-free Piezoelectric Ceramics. Journal of Korean Physical Society, 57(4), 924–928. https://doi.org/10.3938/jkps.57.924
@article{Maeda_Takiguchi_Morita_Ishikawa_Hemsel_2010, title={Hydrothermal (K1-xNax)NbO3 Lead-free Piezoelectric Ceramics}, volume={57}, DOI={10.3938/jkps.57.924}, number={4}, journal={Journal of Korean Physical Society}, author={Maeda, Takafumi and Takiguchi, Norihito and Morita, Takeshi and Ishikawa, Mutsuo and Hemsel, Tobias}, year={2010}, pages={924–928} }
Maeda, Takafumi, Norihito Takiguchi, Takeshi Morita, Mutsuo Ishikawa, and Tobias Hemsel. “Hydrothermal (K1-XNax)NbO3 Lead-Free Piezoelectric Ceramics.” Journal of Korean Physical Society 57, no. 4 (2010): 924–28. https://doi.org/10.3938/jkps.57.924.
T. Maeda, N. Takiguchi, T. Morita, M. Ishikawa, and T. Hemsel, “Hydrothermal (K1-xNax)NbO3 Lead-free Piezoelectric Ceramics,” Journal of Korean Physical Society, vol. 57, no. 4, pp. 924–928, 2010.
Maeda, Takafumi, et al. “Hydrothermal (K1-XNax)NbO3 Lead-Free Piezoelectric Ceramics.” Journal of Korean Physical Society, vol. 57, no. 4, 2010, pp. 924–28, doi:10.3938/jkps.57.924.

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