| abstract |
An alkali niobate-based piezoelectric / electrostrictive porcelain composition having good electric field induced strain when a high electric field is applied is provided. A piezoelectric / electrostrictive film is a sintered body of a piezoelectric / electrostrictive ceramic composition. The piezoelectric / electrostrictive porcelain composition includes Li, Na, and K as the A site element, Nb and Sb as the B site element, and a ratio of the total number of atoms of the A site element to the total number of atoms of the B site element is A perovskite oxide having a number of Sb atoms greater than 1 and not less than 1 mol% and not greater than 10 mol% in the total number of atoms of the B site element is Ba, Sr, Ca, La, Ce, Nd, Sm, Dy, Ho, and A piezoelectric / electrostrictive porcelain composition containing a compound of one or more elements selected from the group consisting of Yb and a compound of Mn. [Selection] Figure 1 |