Patent ID: 9627606
Date: 2017-04-18
CPC Classifications: B41J,H01L

Claim:
1. An electromechanical transducer element comprising: a first electrode directly on or indirectly above one of a substrate and a base film; an electromechanical transducer film disposed on the first electrode and having a perovskite crystal; and a second electrode disposed on the electromechanical transducer film, wherein the electromechanical transducer film is a {100} preferentially oriented polycrystalline film in which {100} plane is preferentially oriented, wherein a sum of an orientation degree ρ{111} of {111} plane and an orientation degree ρ{100} of {100} plane is in a range of not less than 0.0002 and not greater than 0.25, wherein at least two diffraction peaks of a plurality of diffraction peaks separated in diffraction peaks derived from {200} plane or {400} plane obtained by the θ-2θ measurement of the electromechanical transducer film according to the X-ray diffraction method attribute to a tetragonal a-domain structure and a tetragonal c-domain structure, respectively, and wherein a value of Sc/(Sa+Sc) is not greater than 20%,