A thick metal layer is formed on a semiconductor integrated circuit in
multiple different deposition chambers. A first portion of the metal
layer is formed in a first deposition chamber, the first thickness being
approximately half the target thickness. The substrate is then removed
from the first chamber and transported to a second chamber. The
deposition of the same metal layer continues in a second chamber, having
the same grain structure and orientation. The second portion of the metal
layer is grown to achieve the final thickness. By using two different
deposition chambers to form the single metal layer, layers in excess of
25,000 angstroms in thickness can be obtained.