| abstract |
Piezoelectric material having good piezoelectric constant without depolarization in a wide operating temperature range. The piezoelectric material has the formula (Ba 1-x Ca x) as a main component a (Ti 1-y Zr y ) O 3 (1.00? A? 1.01, 0.125? X? 0.175, 0.055? Y? 0.090), and manganese contained in the perovskite-type metal oxide. The content of manganese relative to 100 parts by weight of the perovskite-type metal oxide is 0.02 parts by weight or more and 0.10 parts by weight or less in terms of metals. |