Patent ID: 8004161
Filing Date: 2011-08-23
Classification: C01G,C01P,C04B,H01L,Y10T

Abstract:
1. A multilayered piezoelectric element comprising: piezoelectric ceramic layers and electrode formation layers which are alternately laminated, wherein the piezoelectric ceramic layers are made of crystal oriented ceramics that are polycrystalline material made mainly of an isotropic perovskite type compound in which a specific {100} crystal plane of each of crystal grains that form the polycrystalline material is oriented, and the electrode formation layers have electrode parts that form inner electrodes containing a conductive metal, and the isotropic perovskite type compound is expressed by a general formula (1), where 0≦x≦0.2, 0≦y≦1, 0≦z≦0.4, 0≦w≦0.2, x+z+w>0, 0<h≦0.05, 0.94≦j≦1, and 0≦k≦0.5).