Bipolar and Unipolar Fatigue of Ferroelectric BNT-Based Lead-Free Piezoceramics
作者： Zhenhua Luo , Julia Glaum , Torsten Granzow , Wook Jo , Robert Dittmer
DOI: 10.1111/J.1551-2916.2010.04101.X
关键词: Composite material 、 Forensic engineering 、 Polarization (electrochemistry) 、 Lead (electronics) 、 Ferroelectricity 、 Materials science
摘要: The bipolar and unipolar fatigue behavior of the lead-free piezo- ferroelectric 0.94Bi1/2Na1/2TiO3–0.06BaTiO3 (94BNT–6BT) was investigated. To obtain a complete profile behavior, both large-signal (polarization, strain) small-signal (d33, ɛ33) properties were measured at room temperature. results indicate that material suffers significant degradation in large- after cycling, with most occurring first 104 cycles test.
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