A novel multi-component lead-free (1− x )BF– x BT–0.01(BNT–20BKT) piezoelectric ceramic exhibits excellent high-temperature piezoelectric properties and thermal stability

A novel lead-free (1− x )BF– x BT–0.01(BNT–20BKT)(0.27 ≤ x ≤ 0.35) piezoelectric ceramic was fabricated. At x = 0.31, an in situ d 33 of 687.8 pC N −1 was achieved at a depolarization temperature ( T dr ) of 381.8 °C.