fig7

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 7. Phase-field simulations of WCBN and WCBN-1000HT ceramics: (A) The change of domain structure under stress. (B) Schematics of free energy vs. polarization. (C) Evolution of domain structure and polarization vector under multi-field coupling.

Microstructures
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