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.
en-copyright= kn-copyright= en-aut-name=OkamotoYoshifumi en-aut-sei=Okamoto en-aut-mei=Yoshifumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=AkiyamaKoji en-aut-sei=Akiyama en-aut-mei=Koji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TakahashiNorio en-aut-sei=Takahashi en-aut-mei=Norio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University en-keyword=ON/OFF method kn-keyword=ON/OFF method en-keyword=sensitivity analysis kn-keyword=sensitivity analysis en-keyword=single-pole-type-head kn-keyword=single-pole-type-head en-keyword=three-dimensional (3-D) topology optimization kn-keyword=three-dimensional (3-D) topology optimization END start-ver=1.4 cd-journal=joma no-vol=42 cd-vols= no-issue=4 article-no= start-page=1087 end-page=1090 dt-received= dt-revised= dt-accepted= dt-pub-year=2006 dt-pub=20064 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=3-D topology optimization of single-pole-type head by using design sensitivity analysis en-subtitle= kn-subtitle= en-abstract= kn-abstract=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.
en-copyright= kn-copyright= en-aut-name=OkamotoYoshifumi en-aut-sei=Okamoto en-aut-mei=Yoshifumi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=AkiyamaKoji en-aut-sei=Akiyama en-aut-mei=Koji kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TakahashiNorio en-aut-sei=Takahashi en-aut-mei=Norio kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=Okayama University affil-num=2 en-affil= kn-affil=Okayama University affil-num=3 en-affil= kn-affil=Okayama University en-keyword=ON/OFF method kn-keyword=ON/OFF method en-keyword=sensitivity analysis kn-keyword=sensitivity analysis en-keyword=single-pole-type-head kn-keyword=single-pole-type-head en-keyword=three-dimensional (3-D) topology optimization kn-keyword=three-dimensional (3-D) topology optimization END