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3-D topology optimization of single-pole-type head by using design sensitivity analysis

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3 Author(s)
Y. Okamoto ; Dept. of Electr. & Electron. Eng., Okayama Univ., Japan ; K. Akiyama ; N. Takahashi

It is necessary to develop a write head having a large recording field and small stray field in adjacent tracks and adjacent bits in perpendicular magnetic recording systems. In this paper, a practical three-dimensional topology optimization technique combined with the edge-based finite-element method is proposed. A technique for obtaining a smooth topology is also shown. The optimization of single-pole-type head having a magnetic shield is performed by using the topology optimization technique so that the leakage flux in the adjacent bit can be reduced. A useful shape of the magnetic shield obtained by the proposed technique is illustrated

Published in:

IEEE Transactions on Magnetics  (Volume:42 ,  Issue: 4 )