Patent ID: 7197799

Claim:
A method for manufacturing a piezoelectric device, comprising the steps of: forming, on a substrate, an interlayer that partially has a layer formed by an ion beam assisted laser ablation method, and is bi-axially oriented as a whole; forming a lower electrode on the interlayer by epitaxial growth; forming a piezoelectric film on the lower electrode by epitaxial growth; and forming an upper electrode on the piezoelectric film; wherein a center axis of an ablation plume is angled at approximately 55 degrees with respect to a direction normal to the substrate when the layer is formed by an ion beam assisted laser ablation method; and wherein an irradiation direction of an ion beam is angled at approximately 55 degrees with respect to a direction normal to the substrate, and angled at approximately 71 degrees or approximately 110 degrees with respect to the center axis of the ablation plume, when the layer is formed by an ion beam assisted laser ablation method.