Patent ID: 8524617
Filing Date: 2013-09-03
Classification: C23C,H01L

Abstract:
1. A method for forming, on a substrate, a dielectric film comprising a metal oxide containing O and elements A and B, wherein the element A comprises Hf or a mixture of Hf and Zr and the element B comprises Al or Si, the method comprising the steps of: forming a metal oxide having an amorphous structure which has a molar ratio between element A and element B, B/(A+B) of 0.02≦(B/(A+B))≦0.095 and a molar ratio between element A and O, O/A of 1.0<(O/A)<2.0; and annealing the metal oxide having the amorphous structure at 700° C. or more to form a metal oxide containing a crystal phase including a cubic crystal.