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

Of lead, cobalt, potassium, and which does not contain none, high Curie temperature, mechanical quality factor and the piezoelectric provide good piezoelectric ceramic. Therefore the formula 1 in by indicated that the perovskite-type metal oxide, CuO, and MgO to be contained to the piezoelectric ceramic, and wherein the perovskite-type metal oxide 1 mol in respect of CuO content of 0.1 mol% at least 1 mol% or less and , MgO and the content is more than 0.1 mol% to 2 mol% or less it provides a piezoelectric ceramic. Formula 1 (Na _x Ba _1-y) (Nb _1-y Ti _y) O ₃ (wherein 0.85 ≤ x ≤ 0.92, 0.85 ≤ y ≤ 0.92, 0.95 ≤ x / y ≤ 1.05 indicates a.) ;