| 摘要 |
PROBLEM TO BE SOLVED: To provide a piezoelectric ceramic composition and a piezoelectric resonator capable suppressing variation of resonance frequency of a piezoelectric element and making stable frequency.SOLUTION: A piezoelectric ceramic composition contains a composite perovskite type compound represented by (PbBaSrCa)(NbSbMn)(TiZr)O, where a, b, c, d, e and f satisfy 0.97≤a+d+e+f≤1.03, 0.02≤b≤0.25, 0.51≤c≤0.61 and 0≤d+e+f≤0.2 as a main component and Al of 0.001 to 0.3 pts.mass, Fe of 0.001 to 0.5 pts.mass and Si of 0.005 to 0.058 pts.mass based on 100 pts.mass of the main component.SELECTED DRAWING: Figure 1 |
