Patent ID: 6716796
Filing Date: 2004-04-06
Classification: C30B,H01L

Abstract:
A polycrystalline thin film consisting mainly of oxide crystal grains which have a crystal structure of a type C rare earth oxide represented by one of the formulas Y2O3, Sc2O3, Nd2O3, Sm2O3, Eu2O3, Gd2O3, Tb2O3, Dy2O3, Ho2O3, Er2O3, Yb2O3, Lu2O3, and Pm2O3 formed on a film forming surface of a polycrystalline substrate, wherein grain boundary inclination angles between corresponding crystal axes of different crystal grains in the polycrystalline thin film along a plane parallel to the film forming surface of the polycrystalline substrate are controlled within 30 degrees.