| 摘要 |
There is provided a non-lead piezoelectric ceramic predominantly composed of a bismuth layered compound, containing 100 parts by mass of a component represented by the compositional formula: Bi 4 Ti 3 O 12 ·w{(1-x)A 1-y-z Bi y RE z TiO 3 ·xBiFeO 3 }, wherein A represents M1 ± (M2 1/2 Bi 1/2 ) 1-± , M1 represents an alkaline earth metal element, M2 represents an alkali metal element, RE represents a rare earth element, and 1.30 ‰¤ w ‰¤ 1.75, 0 ‰¤ x ‰¤ 0.10, 0 ‰¤ y + z ‰¤ 0.30 and 0 ‰¤ ± ‰¤ 1, and 0.05 part by mass or more of Mn in terms of the content of an oxide (MnO 2 ).
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