Patent ID: 6361667
Filing Date: 2002-03-26
Classification: C23C,H01J

Abstract:
An ionization sputtering apparatus comprising:a sputter chamber having a pumping system, a target provided in said sputter chamber, a substrate holder facing said target and spaced therefrom, a sputter source for bombarding said target to cause a sputter discharge, gas introduction means for introducing gas into said chamber, ionization means for ionizing sputtered particles from said target, said ionization means generating a plasma at a pressure of 10 mTorr to 100 mTorr at an ionization space between said target and said substrate holder, a magnetic device preventing said plasma from diffusing from said ionization space, and a deposition shield preventing said sputtered particles from arriving at an unnecessary place in said sputter chamber, said deposition shield being disposed within said chamber, said deposition shield being a cylinder surrounding a space between said target and said holder and being partially made of magnetic material to compose a part or whole of said magnetic device.