| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid jet head which inhibits destruction of a piezoelectric layer, and to provide a liquid jet device, a piezoelectric element, and a manufacturing method of the piezoelectric element.SOLUTION: A liquid jet head includes: a passage formation substrate 10 having a pressure generation chamber which communicates with a nozzle opening; a piezoelectric element 300 including a first electrode 60 provided at the one surface side of the passage formation substrate, a piezoelectric layer 70 including lead, titanium, and zirconium, and a second electrode 80. The second electrode includes a first layer 81 provided at the piezoelectric layer side and a second layer 82 provided on a surface of the first layer which is opposite to the piezoelectric layer. Multiple protruding parts 83 formed by condensing lead contained in the piezoelectric layer are provided on a surface of the second electrode which is opposite to the piezoelectric layer. |
