Bipolar and Unipolar Fatigue of Ferroelectric BNT-Based Lead-Free Piezoceramics
Citation
Luo, Z. and Glaum, J. and Granzow, T. and Jo, W. and Dittmer, R. and Hoffman, M. and Rodel, J. 2011. Bipolar and Unipolar Fatigue of Ferroelectric BNT-Based Lead-Free Piezoceramics. Journal of the American Ceramic Society. 94 (2): pp. 529-535.
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Journal of the American Ceramic Society
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Abstract
The bipolar and unipolar fatigue behavior of the lead-free piezo- and ferroelectric 0.94Bi1/2Na1/2TiO3–0.06BaTiO3 (94BNT–6BT) was investigated. To obtain a complete profile of the fatigue behavior, both large-signal (polarization, strain) and small-signal (d33, e33) properties were measured at room temperature. The results indicate that the material suffers a significant degradation in both large- and small-signal properties after cycling, with most of the fatigue occurring in the first 104 cycles of the fatigue test.
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