Abstract
A large d33 value of 483 pC N−1 and a high TC 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.
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