| 摘要 |
Disclosed is a piezoelectric ceramic indicated by the composition formula Bi4Ti3O12.alpha[(1-beta)(M11-gammaLngamma)TiO3+betaM2M3O3], wherein: alpha, beta, and gamma satisfy 0.3@alpha@0.95, 0beta@0.5, and 0@gamma@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. |
