| 摘要 |
Disclosed is a piezoelectric ceramic indicated by the composition formula Bi4Ti3O12.α[(1−β)(M11-γLnγ)TiO3+βM2M3O3], wherein:α,β, andγsatisfy 0.3≰α≰0.95, 0β≰0.5, and 0≰γ≰0.5; M1 is at least one chosen from Sr, Ba, Ca, (Bi0.5Na0.5), (Bi0.55K0.5) and (Bi0.5Li0.5); M2 is at least one chosen from among Bi, Na, K and Li; M3 is at least one chosen from Fe and Nb; and includes 0.01-0.7 mass % of Co in CoO conversion to 100 mass % of bismuth layered compound where Ln is lanthanoid.
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