发明名称 |
Magnetic writer having multiple gaps with more uniform magnetic fields across the gaps |
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. |
申请公布号 |
US8670210(B2) |
申请公布日期 |
2014.03.11 |
申请号 |
US201313734838 |
申请日期 |
2013.01.04 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BISKEBORN ROBERT G.;HERGET PHILIPP;WEBB BUCKNELL C. |
分类号 |
G11B5/265 |
主分类号 |
G11B5/265 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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