Excellent comprehensive electrical properties in KNN-based ceramics via synergistic effects of structural flexibility and domain engineering

A large d 33 value of 483 pC N −1 and a high T C of 302 °C can be simultaneously obtained in KNNT-BNZ-BFO/0.004 LiF ceramics. The prototype device of KNNT-BNZ-BFO/0.004 LiF buzzers is fabricated, and its SPL reaches 95–98 dB at 4–5 kHz.