Patent ID: 7956518
Filing Date: 2011-06-07
Classification: C04B,H01L

Abstract:
1. A piezoelectric/electrostrictive ceramic composition comprising: a perovskite type oxide comprising as A site elements, Li, Na, and K and as B site elements, Nb and Sb and having a ratio of the total number of atoms of the A site elements to the total number of atoms of the B site elements greater than 1 and not less than 1 mol % and not more than 10 mol % of the number of Sb atoms in the total number of atoms of the B site elements; and a Mn compound added to said perovskite type oxide, wherein between two main peaks derived from said perovskite type oxide and observed in a range of 2θ=44 to 47° in an X-ray diffraction pattern using Cu—Kα beam as an X-ray source, a ratio of d-spacing calculated from a peak in the lower angle side to the d-spacing calculated from a peak in a higher angle side is not less than 1.003 and not more than 1.025.