Patent ID: 9705070
Date: 2017-07-11
CPC Classifications: B41J,C04B,C23C,G01J,H01L,H03H,Y10T

Claim:
1. A ferroelectric thin film element comprising: a base member; and a ferroelectric thin film formed on the base member, the thin film being formed of a dielectric material of a perovskite structure, wherein the dielectric material is a composite oxide in which an additive of a metallic material other than Pb, Zr and Ti is mixed with PZT, and a concentration of the additive is substantially zero in the vicinity of the base member and is varied in the thickness direction of the thin film, and wherein the thin film includes a first layer in which the concentration of the additive is substantially zero and a second layer in which the concentration of the additive is a predetermined concentration and the first and second layers are alternately repeated in the thickness direction of the thin film.