| abstract |
A piezoelectric ceramic contains a main component, Mn as a first auxiliary component, and a second auxiliary component containing at least one element selected from the group consisting of Cu, B, and Si. The main component contains a perovskite metal oxide having the following general formula (1): (Ba 1-x Ca x ) a (Ti 1-y Zr y )O 3 (0.100 ≤ x ≤ 0.145, 0.010 ≤ y ≤ 0.039) (1) The amount b (mol) of Mn per mole of the metal oxide is in the range of 0.0048 ≤ b ≤ 0.0400, the second auxiliary component content on a metal basis is 0.001 parts by weight or more and 4.000 parts by weight or less per 100 parts by weight of the metal oxide, and the value a of the general formula (1) is in the range of 0.9925 + b ≤ a ≤ 1.0025 + b. |