Patent ID: 8100513
Filing Date: 2012-01-24
Classification: B41J,C04B,C23C,H01L

Abstract:
1. A ferroelectric film having a columnar structure constituted by a plurality of columnar grains, and containing as a main component a perovskite oxide which has a composition expressed by a compositional formula A 1+δ [(Zr x Ti 1−x ) 1−y M y ]O z , where A represents one or more A-site elements including lead (Pb) as a main component, M represents one or more of vanadium (V), niobium (Nb), tantalum (Ta), and antimony (Sb) as one or more B-site elements, zirconium (Zr) and titanium (Ti) are also B-site elements, 0<x≦0.7, 0.1≦y≦0.4, δ is approximately zero, z is approximately 3, and δ and z may deviate from 0 and 3, respectively, within ranges of δ and z in which the composition expressed by the compositional formula A 1+δ [(Zr x Ti 1−x ) 1−y M y ]O z can form a perovskite structure.