Patent ID: 7407565

Claim:
A method of depositing metallic film layers on a substrate, comprising: introducing a first gas into a vacuum chamber wherein the first gas is introduced through an first inlet port disposed proximate a sputtering target disposed inside the vacuum chamber, wherein the sputtering target is made of a material selected from a group consisting of titanium, tantalum and tungsten; applying power to the sputtering target and a coil disposed between the sputtering target and the substrate positioned on a substrate support member in the presence of only the first gas; and introducing a second gas into the chamber to deposit the metal containing film layers, wherein the second gas is introduced from a bottom portion of the vacuum chamber proximate a surface of the substrate in the presence of the power applied to the sputter target and the coil, wherein the second gas from the bottom portion of the vacuum chamber is supplied through a gap defined between a shield ring and a shield support member to the substrate surface.