Liquid ejection head, liquid ejection device, and piezoelectric element

摘要

A liquid ejection head includes a piezoelectric element (300) having a piezoelectric layer (70) and electrodes (80) provided on the piezoelectric layer. The piezoelectric layer is 3 µm or less in thickness. The piezoelectric layer is made of a piezoelectric material containing a perovskite compound including bismuth manganate ferrate and barium titanate. The piezoelectric layer is preferentially oriented with the (110) plane, the position (20) of the X-ray diffraction peak attributed to the (110) plane being 31.80º or more and 32.00° or less.