Damascene Head Technology

Several years ago Western Digital made a
strategic investment in Damascene head technology. In the Damascene head, the
main pole and the structures of the right head are built by depositing and
etching magnetic and non-magnetic materials. The Damascene process provides
the ability to create smaller, more complex head structures. In contrast, the
dry pole process is limited in both precision and head complexity. Because
the main pole of the right head is shaped by ion milling. The Damascene
process enables the formation of a full wraparound shield, that helps to focus
the magnetic field onto the target area being written, while reducing
interference on adjacent tracks.

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