液体噴射ヘッド、液体噴射装置、圧電素子、超音波デバイス及びＩＲセンサー

摘要

A piezoelectric element comprises a piezoelectric layer comprising a mixed crystal including at least cerium, bismuth, iron, barium, and titanium and an electrode provided to the piezoelectric layer. The molar ratio of cerium to the total amount of cerium and bismuth in the piezoelectric layer is 0.03 or more and 0.10 or lower.