It is known that the magnetic shields, between which CPP GMR stacks are
sandwiched, can be a source of AMR (anisotropic magneto-resistance)
noise. This has been significantly reduced by coating both the magnetic
shields with highly conductive layers. If the guidelines disclosed in the
invention are followed, the read head can exhibit AMR noise reduced by
about 14 to 20. Additionally, the total thickness of the read gap can be
maintained to be as low as 300 to 400 Angstroms.