| abstract |
Disclosed are a liquid ejecting head and a liquid ejecting apparatus that have a low environmental load and can obtain a large piezoelectric strain with a relatively small electric field by a novel method. A piezoelectric element comprising: a piezoelectric layer made of a complex oxide having a perovskite structure including at least bismuth, barium, iron and titanium; and electrodes 60 and 80 for applying an electric field to the piezoelectric layer. In the liquid jet head I including 300, the piezoelectric layer 70 is changed from rhombohedral to monoclinic due to tensile stress, and the piezoelectric layer 70 is single by applying an electric field during driving. Changes from oblique to rhombohedral. [Selection] Figure 3 |