Patent ID: 7754095
Filing Date: 2010-07-13
Classification: B32B,C04B,H01L

Abstract:
1. A piezoelectric ceramic composition comprising: a main component having a general formula of {(1−x)(K at least one specific element selected from the group consisting of In, Sc, Y, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Yb and Lu in the form of an oxide in a total amount of about 1.5 to 10 mols per 100 mols of the main component, and further comprising at least one metallic element selected from the group consisting of Mn, Ni, Fe, Zn, Cu and Mg as an oxide in an amount of about 0.1 to 10 mols total per 100 mols of the main component.