| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a liquid injection head that is made of a non-lead-based material and that has excellent piezoelectric characteristics, a liquid injection apparatus, and a piezoelectric element.SOLUTION: A liquid injection head I includes a piezoelectric element 300 that comprises a piezoelectric layer 70, and first and second electrodes 60 and 80 provided on both the sides of the piezoelectric layer 70. The piezoelectric layer 70, which is a complex oxide having a perovskite structure including at least bismuth, barium, iron, titanium and lithium, contains lithium equal to or more than 0.5 mol% and less than 1.0 mol%.</p> |
