ＳＰＴヘッド／２層膜媒体系における隣接トラックからの影響

概要

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The perpendicular stray field from the tracks neighboring the center track in a perpendicular SPT head/double-layer medium system was investigated using a 3D read/write simulation system in witch the Poisson equation for the head/medium system is solved by the edge-based finite element method. The main results were as follows: (1) the stray field in the double-layer medium is about two times greater than that in the single layer, (2) the stray field under the main pole or the auxiliary pole in an SPT head as a function of the relative permeability μr of a soft underlayer (SUL) initially increases, reaches a maximum at around μr = 10, and decreases monotonically with increasing μr, (3) the stray field for SUL μr greater than 10 is increased by cutting tha SUL into short tracks, and (4) the stray field is almost independent of the thickness of the SUL when μr is greater than 100.
社団法人日本磁気学会の論文