Patent ID: 6682634
Filing Date: 2004-01-27
Classification: C23C,H01J

Abstract:
A method for sputtering material from a sputter target onto a deposition substrate in an evacuated volume, the method comprising the steps of:(a) providing an ion source means, with means for introducing a gas, ionizable to produce a plasma, into said ion source means, wherein ions leaving said ion source means in the form of an ion efflux have an energy of about 50 eV or less; (b) providing a sputter target biased negative relative to ground, which is disposed in the ion efflux of said ion source means; (c) positioning said deposition substrate in operative relation to said sputter target whereby said material sputtered from said sputter target is deposited onto said substrate; and (d) controlling the pressure of said gas within said volume such that said pressure is substantially less than the pressure of said gas within said ion source means.