| 摘要 |
PURPOSE:To obtain a composition having electromechanical coupling coefficient sufficient for practice even by a low temperature sintering by incorporating composite perovskite oxide having predetermined composition ratio therein as a main ingredient. CONSTITUTION:A composition which is represented by a general formula pb[(Ni1/3Nb2/3)a.(Zn1/3Nb2/3)b.(Fe2/3W1/3)c.(TixZry)d]O3, contains composite perovskite oxide having composition ratio of a+b+c+d=1, 0.20<a+b<0.50, 0.02<c<0.15, x+y=1 (where a, b, c, d, x, y are all positive numbers), and 0.01 or more of molar ratio of A site/B site as a main ingredient, is obtained. |
