PIEZOELECTRIC CERAMIC ELECTRONIC COMPONENT AND METHOD FOR MANUFACTURING THE SAME

摘要

A piezoelectric ceramic base body that has a polyhedral shape having shape anisotropy, such as a rectangular parallelepiped shape, and which has opposed faces on which external electrodes are formed. The opposed faces have first sides and second sides. Between the first side and the second side of one of the opposed faces, a width dimension of the surface in a direction orthogonal to the first side and the second side is larger than a length dimension of each of the first and the second sides. The crystal axis is {100} oriented in a direction parallel to the first and the second sides, and a degree of orientation by a Lotgering method is 0.4 or more.

主权项

1. A piezoelectric ceramic electronic component comprising:
a piezoelectric ceramic base body which contains a composite oxide having a perovskite type crystal structure as a primary component, the piezoelectric ceramic base body having at least one pair of opposed faces; and a pair of external electrodes adjacent respective surfaces of the opposed faces, wherein the piezoelectric ceramic base body has a polyhedral shape having shape anisotropy, the respective surfaces of the opposed faces each have at least a first side and a second side parallel to each other, between the first side and the second side of one of the surfaces of the opposed faces, a width dimension in a direction orthogonal to the first side and the second side is larger than a length dimension of each of the first side and the second side, a crystal axis of the piezoelectric ceramic base body is {100} oriented in a direction parallel or approximately parallel to the first side and the second side, and a degree of orientation by a Lotgering method is 0.4 or more.