Patent ID: 7422807
Filing Date: 2008-09-09
Classification: C30B,G02F,H01L,Y10T

Abstract:
1. A potassium niobate deposited body comprising: a substrate composed of an R-plane sapphire substrate; a buffer layer formed above the substrate; a potassium niobate layer or a potassium niobate solid solution layer formed above the buffer layer; and an electrode layer above the potassium niobate layer or the potassium niobate solid solution layer, wherein the potassium niobate layer or the potassium niobate solid solution layer epitaxially grows in a (100) orientation in a pseudo cubic system expression, and a (100) plane of the potassium niobate layer or the potassium niobate solid solution layer tilts with a [11-20] direction vector as a rotation axis with respect to an R-plane (1-102) of the R-plane sapphire substrate.