| 摘要 |
PROBLEM TO BE SOLVED: To provide a laminated piezoelectric element having high reliability due to resistance to occurrence of a crack even in a long drive.SOLUTION: A laminated piezoelectric element 1 includes a piezoelectric ceramic layer and an internal electrode layer 22, and the piezoelectric ceramic layer includes a drive region 21 that faces an internal electrode 22 and a peripheral region 11 surrounding the drive region 21, and the peripheral region 11 includes a glass phase 12, and a ceramic material of the piezoelectric ceramic layer preferably includes an alkali metal-containing niobate-based perovskite structure, and the glass phase 12 preferably includes K, Na, and Li. |
