Law Offices of Imam
Method of making a perpendicular recording magnetic head pole tip with an etchable adhesion CMP stop layer
The method of making a magnetic head assembly includes forming a second pole piece layer that is recessed from a head surface, forming a reactive ion etchable (RIEable) pole tip forming layer on the second pole piece layer, forming an adhesion/stop layer of tantalum (Ta) on the pole tip forming layer, forming a photoresist mask on the adhesion/stop layer with an opening for patterning the adhesion/stop layer and the pole tip forming layer with another opening, reactive ion etching (RIE) through the opening to form the other opening, forming the second pole piece pole tip in the other opening with a top which is above a top of the adhesion/stop layer and chemical mechanical polishing (CMP) the top of the second pole piece pole tip until the CMP contacts the adhesion/stop layer. The invention also includes the magnetic head made by such a process.
Hitachi Global Storage Technologies Netherlands, B.V.
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G11B G11B Y10T Y10T Y10T Y10T
inventional inventional additional additional additional additional
Son Van Quang Jeffrey S. Jui-lung
Nguyen Le Lille Li