PIEZOELECTRIC CERAMIC, METHOD FOR PRODUCING THE SAME, PIEZOELECTRIC ELEMENT, MULTILAYER PIEZOELECTRIC ELEMENT, LIQUID EJECTION HEAD, LIQUID EJECTING APPARATUS, ULTRASONIC MOTOR, OPTICAL DEVICE, VIBRATING APPARATUS, DUST-REMOVING APPARATUS, IMAGING APPARATUS, AND ELECTRONIC DEVICE

摘要

Provided is a piezoelectric ceramic that does not contain any of lead, potassium, and cobalt and has a high Curie temperature, a good mechanical quality factor, and good piezoelectric properties. The piezoelectric ceramic includes a perovskite-type metal oxide represented by General Formula (1), CuO, and MgO. In the piezoelectric ceramic, the content of CuO is 0.1 mol% or more and 1 mol% or less and the content of MgO is 0.1 mol% or more and 2 mol% or less of the content of the perovskite-type metal oxide. General Formula (1): (NaxBa1-y) (NbyTi1-y)O3, where 0.85 ≤ x ≤ 0.92, 0.85 ≤ y ≤ 0.92, 0.95 ≤ x/y ≤ 1.05.