Abstract
Through an analysis of the temperature stability of (K0.5Na0.5) NbO3 (KNN) based ceramics and KNN solid solutions, we propose a method to enhance the temperature stability of KNN materials. These materials are valuable for their piezoelectric properties. To verify the feasibility of this method, 0.9 (K1−x Na x ) NbO3-0.06LiNbO3-0.04CaTiO3(KNLN-CaTiO3) ceramics were designed, and their structure and properties were studied. The results show that KNLN-CaTiO3(x = 0.54) ceramics have a good temperature stability over a wide temperature range (25–320°C). Also, they have good piezoelectric properties (d 33=152 pC/N in x=0.54). This result confirms the feasibility of our proposed solution for improving the piezoelectric properties of KNN-based ceramics that have poor temperature stability.
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Zhao, J., Du, H., Qu, S. et al. Improvement in the piezoelectric temperature stability of (K0.5Na0.5)NbO3 ceramics. Chin. Sci. Bull. 56, 2389–2393 (2011). https://doi.org/10.1007/s11434-011-4439-6
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DOI: https://doi.org/10.1007/s11434-011-4439-6