Lorimer Labs
Structure and method for reduced corrosion of auxiliary poles during the fabrication of perpendicular write heads
A method and structure for reducing corrosion during the manufacture of perpendicular write heads is disclosed. Auxiliary pole structures (otherwise known as trailing shields and wrap around shields) are susceptible to corrosion due to their iron containing composition and small dimensions. The impact of corrosion can be reduced by utilizing a gap material comprising an upper surface of noble metals, which extends from underneath the auxiliary pole and is exposed to the same corrosive environment during processing. The area of the exposed gap material is limited to optimize corrosion protection.
Hitachi Global Storage Technologies Netherlands B.V.
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Christian Rene Quang Scott Arthur Jui-Lung
Bonhote Le MacDonald Li