摘要:
Provided are a piezoelectric film, a piezoelectric film element, a liquid discharge head using the piezoelectric film element, and a liquid discharge apparatus. A piezoelectric film element that can be suitably used for a discharge pressure-generating element of a liquid discharge head is obtained by using an epitaxial oxide film composed of a perovskite composite oxide constituted according to a general formula ABO 3 as a piezoelectric film. The epitaxial oxide film has at least an A domain and a B domain having a crystal orientation deviation with respect to each other. The crystal orientation deviation between the A domain and the B domain is less than 2.
摘要:
BiFeO 3 precursor solution is coated on the surface of an underlying member (3). Heat treatment is performed after the coating to form a dielectric film (5). The dielectric film is heated in a non-oxidizing atmosphere to crystallize the dielectric film. With this method, a ferroelectric material can be obtained which contains constituent elements of Bi, Fe and O and has crystal lattice of a tetragonal or orthorhombic system. The material can be used to make a lead-free FRAM.