发明申请
US20090033179A1 MULTILAYER PIEZOELECTRIC ELEMENT 审中-公开
多层压电元件

MULTILAYER PIEZOELECTRIC ELEMENT
摘要:
A multilayer piezoelectric element 20 includes a plurality of piezoelectric layers 11 and a plurality of inner electrode layers 12 alternately stacked, a first outer electrode 18 that electrically couples together every other inner electrode layers 12 in the lamination direction, and a second outer electrode 19 that electrically couples together the remaining inner electrode layers 12. The piezoelectric layers 11 are obtained by molding and firing a mixture containing a Pb component, a Zr component, a Ti component, a Sr component, a Nb component, and a Zn component. When the piezoelectric layers 11 are each represented by general formula Pb(ZraTi1-a)O3+bSrO+cNbO2.5+dZnO, the relative amounts of the individual components, for example, satisfy the relationships a=0.51, b=2.0×10−2, c=1.50×10−2, d=0.5×10−2, and c/d=3.0.
信息查询
0/0