fig4

Impact of grain boundary segregation on piezoelectric performance of CaBi<sub>2</sub>Nb<sub>2</sub>O<sub>9</sub> high-temperature piezoceramics

Figure 4. Ex-situ electric field XRD patterns of (A) WCBN and (B) WCBN-1000HT ceramics. (C) I200/I020 of the WCBN and WCBN-1000HT ceramics under ex-situ electric field. PFM phase images of the (D) WCBN and (E) WCBN-1000HT ceramics were measured under voltages of 10 and 20 V.

Microstructures
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