Patent ID: 6998763
Filing Date: 2006-02-14
Classification: B81B,G01P,H01L,H03H

Abstract:
1. A ceramic device comprising: an operating section having at least a pair of electrodes formed on a shape-retaining layer, said shape-retaining layer comprising one of a piezoelectric/electrostrictive layer and an anti-ferroelectric layer; a vibrating section comprising a ceramic supporting said operating section, at least one electrode of said electrodes contacting said vibrating section; and a fixed section comprising a ceramic vibratingly supporting said vibrating section; wherein said vibrating section, said electrode contacting said vibrating section, and said shape-retaining layer are integrally fired; and wherein at least said electrode contacting said vibrating section comprises an electrode material containing a minute amount of an additive having an average particle diameter of 0.01 to 1.0 μm when said additive is at least one material selected from the group consisting of zirconium oxide, cerium oxide, and hafnium oxide; wherein said additive has an average particle diameter of 0.1 to 10.0 μm when said additive is at least one material selected from the group consisting of titanium oxide, the material of the piezoelectric/electrostrictive layer, and the material of the anti-ferroelectric layer; and wherein said additive is contained in said electrode material in an amount of 0.1 wt % to 5 wt %.