Abstract: A perpendicular writer of the present invention comprises a main pole connected to two return poles and further includes one or more shorting shields thereby reducing erasure field on double layer perpendicular media. The perpendicular writer may include side shorting shields connecting the first and second return poles thereby modifying the crosstrack field gradient. Additionally, the perpendicular writer may include a top shorting shield modifying the downtrack gradient and may additionally include a bottom shorting shield for further reduction of erasure fields. The distance between the main pole and the shorting shields may be modified to customize the write field gradient.

Abstract: The present invention includes magnetic write elements with portions formed a nanophase high magnetic moment material to enable further increases in areal density in magnetic recording. The nanophase deposited high magnetic moment material comprises coated nanoclusters and nanolaminated cluster films that are deposited to form nanophase high magnetic moment material portions of a write pole and SUL layer in perpendicular recording media. The nanophase write poles exhibit high magnetic moments and are generally compatible with conventional writer head fabrication techniques.

Abstract: A spin polarization enhancement artificial (SPEA) magnet comprises combinations of positive spin asymmetry interfaces and inverse spin asymmetry interfaces arranged antiferromagnetically such that current passed through the SPEA magnet has enhanced spin polarization. The SPEA magnet additionally may combine bulk material properties of electron scattering to either supplement or replace the interfacial spin differentiation. A basic functional unit of the SPEA magnet includes two ferromagnetic layers separated by two spacer layers. Each spacer forms an interface such that adjacent ferromagnetic layers produce different spin symmetry. Antiferromagnetic arrangement of adjacent ferromagnetic layers coordinates the different spin symmetries such that a single spin state is selected and also provides additional stabilization to the SPEA magnet.

Abstract: A write element includes a return pole that is separated from a writer pole by a writer gap layer. The writer pole has a width and a magnetically active region adjoining a first magnetically dead side wall. The magnetically active region defines a track width of the write element, which is less than a width of the writer pole.

Abstract: A soft adjacent layer (SAL) vertically biased magnetoresistive (MR) sensor is disclosed. The SAL biased sensor includes at least three permanent magnet (PM) tabs (hereafter referred to as tabs). An MR sensor layer is disposed in relation to the tabs such that each of the tabs is spaced apart along a width of the MR sensor layer such that each of the tabs is in electrical and magnetic contact with the MR sensor layer to thereby stabilize the MR sensor layer. Preferably, a SAL is disposed in relation to the tabs such that each of the tabs is also spaced apart along a width of the SAL such that each of the tabs is in electrical and magnetic contact with the SAL. A spacer layer is formed between the MR sensor layer and the SAL.