Invention Grant
- Patent Title: Magnetic recording head coating and method
- Patent Title (中): 磁记录头涂层及方法
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Application No.: US12193107Application Date: 2008-08-18
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Publication No.: US08444865B2Publication Date: 2013-05-21
- Inventor: Robert G. Biskeborn , Calvin S. Lo , Gary M. Decad , Cherngye Hwang
- Applicant: Robert G. Biskeborn , Calvin S. Lo , Gary M. Decad , Cherngye Hwang
- Applicant Address: US NY Armonk
- Assignee: International Busines Machines Corporation
- Current Assignee: International Busines Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Suiter Swantz pc llo
- Main IPC: G11B5/3163
- IPC: G11B5/3163

Abstract:
A method for encapsulating a magnetic recording head including coating at least a portion of a magnetic recording head containing a recording gap with a first layer of at least one coating material, including silicon nitride, the first layer of at least one coating material having a first removal rate, coating at least a portion of the magnetic recording head containing a recording gap and coated with the first layer of at least one coating material with a second layer of at least one coating material, including aluminum oxide, the second layer of at least one coating material having a second removal rate higher than the first removal rate, and removing at least a portion of the second layer of at least one coating material via a removal process, including chemical-mechanical polishing, lapping, or vacuum processing to at least partially planarize the surface of the recording gap.
Public/Granted literature
- US20100038340A1 MAGNETIC RECORDING HEAD COATING AND METHOD Public/Granted day:2010-02-18
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