| 摘要 |
The invention provides a lead-free piezoelectric ceramic material having a large piezoelectric strain constant with low temperature dependence. The material includes Ba, Bi, Na, Ti and O and, on a molar basis satisfies 0,99 < Bi/Na ≤ 1,01 and Ba/Bi = 2x/(a-x), in which 0.99 ≤ a ≤ 1.01 and 0 < x < a. |
