FERROELECTRIC FILM, FILM FORMING METHOD, AND METHOD FOR PRODUCING FERROELECTRIC FILM

摘要

The objective of the present invention is to produce a ferroelectric film which is formed of a lead-free material. A ferroelectric film according to one embodiment of the present invention contains K, Na, Nb and O, and is specifically a (K1-xNax)NbO3 film (12) which has a perovskite structure and wherein X satisfies the following formula: 0.3 = X = 0.7.