Invention Grant
US08385018B2 Magnetic writer having multiple gaps with more uniform magnetic fields across the gaps
有权
具有多个间隙的磁记录器,跨越间隙具有更均匀的磁场
- Patent Title: Magnetic writer having multiple gaps with more uniform magnetic fields across the gaps
- Patent Title (中): 具有多个间隙的磁记录器,跨越间隙具有更均匀的磁场
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Application No.: US12611294Application Date: 2009-11-03
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Publication No.: US08385018B2Publication Date: 2013-02-26
- Inventor: Robert G. Biskeborn , Philipp Herget , Bucknell C. Webb
- Applicant: Robert G. Biskeborn , Philipp Herget , Bucknell C. Webb
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Zilka-Kotab, PC
- Main IPC: G11B5/265
- IPC: G11B5/265

Abstract:
A magnetic device according to one embodiment includes a source of flux; a magnetic pole coupled to the source of flux, the magnetic pole having two or more gaps; and a low reluctance path positioned towards at least one of the gaps and not positioned towards at least one other of the gaps for affecting a magnetic field formed at the at least one of the gaps when the source of flux is generating flux. Other disclosed embodiments include devices having coil turns with a non-uniform placement in the magnetic yoke for altering a magnetic field formed at the at least one of the gaps during writing. In further embodiments, a geometry of the magnetic pole near or at one of the gaps is different than a geometry of the magnetic pole near or at another of the gaps to help equalize fields formed at the gaps when the source of flux is generating flux.
Public/Granted literature
- US20110102116A1 MAGNETIC WRITER HAVING MULTIPLE GAPS WITH MORE UNIFORM MAGNETIC FIELDS ACROSS THE GAPS Public/Granted day:2011-05-05
Information query
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