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Design considerations for single-pole-type write heads

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4 Author(s)
Schare, J. ; Data Storage Syst. Center, Carnegie Mellon Univ., Pittsburgh, PA, USA ; Guan, Lijie ; Zhu, Jian-Gang ; Kryder, M.

We investigated the single-pole-type write head for perpendicular recording by using a commercial three-dimensional finite-element magnetostatic solver in conjunction with micromagnetic simulation. We studied head parameters such as throat height and structure, return pole air-bearing surface dimensions, yoke dimensions, and coil type (solenoid or planar), and we varied the anisotropy variance of the media. Finite-element method simulations show that a tradeoff between maximum field and gradients must be made because of the structure of the pole-tip region. Micromagnetic simulations show tribit patterns and the detrimental effect of anisotropy value variations in the media.

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Magnetics, IEEE Transactions on  (Volume:39 ,  Issue: 3 )