| 摘要 |
Piezoelectric performance is improved in a piezoelectric ceramic having a perovskite-type crystal structure expressed by a general formula ABO3 and the B-site element including niobium. The piezoelectric ceramic has a perovskite-type crystal structure in which plural octahedrons formed of oxygen are arranged to share vertices thereof and elements are located at a center of eight octahedrons and at a center of each octahedron; wherein an element located at the center of eight octahedrons is A-site element, an element located at the center of each octahedron is B-site element, and a general formula of the perovskite-type crystal structure is ABO3; the B-site element includes niobium (Nb); and bismuth (Bi) content in composition of the piezoelectric ceramic is 100 ppm by weight or less. |
