Patent ID: 6210542
Filing Date: 2001-04-03
Classification: C23C

Abstract:
A process for producing a thin film comprising:heating a surface of a film source material consisting essentially of a fluoride so that at least a part of the film source material can be ejected in molecular form by ion sputtering, the heating effected by supplying a magneton cathode on which the film source material is placed as a target with input power in an amount of 400 to 800 w per 4 inches of diameter of the magneton cathode;causing ions to sputter the film source material in an atmosphere while introducing thereinto a gas containing at least any one of oxygen, nitrogen and hydrogen to thereby attain at least partial ejection of the film source material in molecular form; and depositing the film source material in molecular form on a substrate to thereby form a thin film of fluoride free of bonding with the gas on the substrate.