| 摘要 |
Disclosed is a piezoelectric ceramic which is characterized by containing [K1-xNax]1-yLiy[Nb1-z-wTazSbw]O3 (wherein x, y, z and w each represents a molar ratio and satisfies 0@x@1, 0@y@1, 0@z@1, 0@w@1) as the main phase and K3Nb3O6Si2O7 as a sub-phase, while containing, as an additive, a Cu compound in an amount of 0.02-5.0 mol in terms of CuO relative to 100 mol of the main phase.
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