Bipolar and Unipolar Fatigue of Ferroelectric BNT-Based Lead-Free Piezoceramics
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Authors
Luo, Zhenhua
Glaum, J.
Granzow, T.
Jo, W.
Dittmer, R.
Hoffman, M.
Rodel, J.
Date
2011Type
Journal Article
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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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Collection
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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