| 摘要 |
There is provided a piezoelectric ceramics, including a perovskite compound of a non-stoichiometric composition represented by a composition formula (KxNa1-x)y(Nb1-zTaz)O3 (0<x<1@1, 0<y<1, 0@z@0.5); and a sintering aid which includes an oxide containing K, Co, and Ta. |
