Patent ID: 6312567
Filing Date: 2001-11-06
Classification: C23C,H01L

Abstract:
A method of forming a (200)-oriented platinum thin film on a substrate, comprising the steps of:(a) providing a substrate;(b) forming an insulating oxide layer on the surface of the substrate;(c) forming an ""oxygen containing platinum layer"" on the insulating oxide layer by depositing platinum on the insulating oxide layer at a temperature between 25.degree. C. and 700.degree. C. under an oxygen containing atmosphere, which consists of a mixture of an inert gas with either oxygen or ozone existing under a partial pressure ratio of 5% to 15%; and(d) annealing the oxygen containing platinum layer at a temperature between about 400.degree. C. and about 1,000.degree. C., without additional deposition of platinum on the ""oxygen containing platinum layer"", and thus converting the ""oxygen containing platinum layer"" into a platinum layer that in substantially free of oxygen and (200)-oriented, and whose (200) orientation degree, f.sub.200 as defined by the following equation in over 90%, ##EQU2##,wherein I.sub.111 represents signal intensity of (111) direction in X-ray diffraction, and I.sub.200 represents signal intensity of (200) direction in X-ray diffraction.