| 摘要 |
A plurality of block-shaped electrostrictive elements are arranged while polarization directions are coincident to the same circumferential direction, thereby an electrostrictive element to be grasped by metal members is constituted. These block-shaped electrostrictive elements have residual polarization in perpendicular direction to the thickness direction. A rectangular electrostrictive material is cut, thereby a number of block-shaped electrostrictive elements are obtained in one polarization treatment. |
