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.;(NaxBa1-y)(NbyTi1-y)O3, where 0.85≦x≦0.92, 0.85≦y≦0.92, 0.95≦x/y≦1.05.  General Formula (1):

主权项

1. A piezoelectric ceramic comprising:
a perovskite-type metal oxide represented by General Formula (1):
(NaxBa1-y)(NbyTi1-y)O3, where 0.85≦x≦0.92, 0.85≦y≦0.92, and 0.95≦x/y≦1.05;  General Formula (1): CuO; and MgO, wherein a content of CuO is 0.1 mol % or more and 1 mol % or less and a content of MgO is 0.1 mol % or more and 2 mol % or less of a content of the perovskite-type metal oxide.