Potassium niobate deposited body, method for manufacturing the same, piezoelectric thin film resonator, frequency filter, frequency oscillator, electronic circuit, and electronic apparatus

摘要

A potassium niobate deposited body includes a substrate, an electrode layer formed above the substrate, and a potassium niobate layer formed above the electrode layer. The potassium niobate layer can include a domain that epitaxially grows in a (110) or (001) orientation, when a lattice constant of orthorhombic potassium niobate is 2^1/2 c