Patent ID: 6246156
Filing Date: 2001-06-12
Classification: B32B,C04B,G01N,H01L

Abstract:
A piezoelectric/electrostrictive element comprising;a ceramic substrate having a material whose main component is zirconium oxide; andat least one film-type piezoelectric/electrostrictive operating portion comprising a first electrode film, a piezoelectric/electrostrictive film, and a second electrode film on the ceramic substrate;wherein the ceramic substrate comprises a base layer and a surface layer, and the crystal phase of the zirconium oxide of the base layer is a tetragonal phase or a mixed phase of tetragonal and cubic phase, tetragonal and monoclinic phase, or tetragonal, cubic, and monoclinic phase, and the crystal phase of the zirconium oxide of the surface layer is mainly cubic phase, and the piezoelectric/electrostrictive operating portion is formed on the surface layer.