Patent ID: 6645395
Filing Date: 2003-11-11
Classification: C04B,H01L

Abstract:
A piezoelectric material containing, as a main component, a composite oxide expressed by the general formula[Pb{1âˆ’x1âˆ’x2âˆ’&agr;(x1âˆ’x2)}, A1x1, A2x2]{(Tiy, Zrz)(1âˆ’&bgr;(x1âˆ’x2)âˆ’&ggr;), (Y0.5, Nb0.5)&ggr;}O3â€ƒâ€ƒ(1) where y+z=1, 1.151, A2, x1, x2 satisfy any of the following conditions:(i) A1 is at least selected from one of Ce and La, A2 is K, 0.02&lE;x1<0.08, 0&lE;x2&lE;0.05 (0.02&lE;x1+x2&lE;0.1, x1&gE;x2), and &agr;=0.5, &bgr;=0 (ii) A1 is at least selected from one of Ce and La, A2 is K, 0.02&lE;x1<0.08, 0&lE;x2&lE;0.05 (0.02&lE;x1+x2&lE;0.1, x1&gE;x2), and &agr;=0,&bgr;=0.25 (iii) A1 is Sr, A2 is Ba, 0.03&lE;x1&lE;0.05, 0.03&lE;x2&lE;0.05 (|x1âˆ’x2|&lE;0.01), and &agr;=0, &bgr;=0.