发明申请
- 专利标题: MAGNETIC WRITER HAVING MULTIPLE GAPS WITH MORE UNIFORM MAGNETIC FIELDS ACROSS THE GAPS
- 专利标题(中): 具有更多均匀磁场的多个GAPS的磁性写作
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申请号: US12611294申请日: 2009-11-03
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公开(公告)号: US20110102116A1公开(公告)日: 2011-05-05
- 发明人: Robert G. Biskeborn , Philipp Herget , Bucknell C. Webb
- 申请人: Robert G. Biskeborn , Philipp Herget , Bucknell C. Webb
- 申请人地址: US NY Armonk
- 专利权人: International Business Machines Corporation
- 当前专利权人: International Business Machines Corporation
- 当前专利权人地址: US NY Armonk
- 主分类号: H01F7/02
- IPC分类号: H01F7/02
摘要:
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.
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