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

Magnetic writer having multiple gaps with more uniform magnetic fields across the gaps
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.
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