Patent ID: 8962347
Filing Date: 2015-02-24
Classification: H01L

Abstract:
1. A method of manufacturing a semiconductor device, the method comprising: forming a lower electrode film above a semiconductor substrate; forming a dielectric film made of a ferroelectric material on the lower electrode film by a sputtering method; subjecting the dielectric film to a crystallization treatment; and forming a conductive oxide film on the dielectric film, the conductive oxide film being made of a ferroelectric material to which conductivity is provided by adding a conductive material, wherein the ferroelectric material forming the conductive oxide film is PZT, the conductive material is at least one of iridium and ruthenium, and a percentage content of the conductive material in the ferroelectric material forming the conductive oxide film is not less than 1 mol % and not more than 4 mol %, and the forming the lower electrode film includes: