SPTヘッド磁界強度の軟磁性下地膜厚依存性

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タイトル別名
  • Dependence of SPT Head Field Strength on Soft-Under Layer Thickness
  • SPT ヘッド ジカイ キョウド ノ ナンジセイ シタジ マクアツ イゾンセイ

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We investigated the relationships between the head field strength and the time response of a single-pole-type head and the thickness of its soft under layer, using a micromagnetic simulator that takes into account the full interactions between SPT head and a double-layered medium. The results obtained showed that the head field strength is dramatically enhanced by a very thin soft under layer of 20 nm and that it saturates with a relatively thin layer of 60 nm. Moreover, the delay time and the response of the head field to the exciting field increase with a thicker soft under layer.

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