| 摘要 |
The present invention aims to provide a piezoelectric composition which is free of lead based compounds and is represented by the following formula (1), (Bi 0.5x Na 0.5x Ba 0.7y+z Ca 0.3y)a (Ti x+y+0.8z Hf 0.2z) O 3 (1), wherein, x, y, z and a in formula (1) meets the following conditions, 0.70‰¤x‰¤0.90, 0.02‰¤y‰¤0.28, 0.02‰¤z‰¤0.28, 0.90‰¤a‰¤1.10 and x+y+z=1. The present invention also provides a piezoelectric device having the piezoelectric composition mentioned above. |
