Thin film magnetic head for high density recording and having a leading side magnetic pole piece of variable width at the media facing surface

Thin film magnetic head for high density recording and having a leading side magnetic pole piece of variable width at the media facing surface

Embodiments of the invention provide a thin film magnetic head suitable for high density recording having a small erase band ΔE and a small fringe magnetic field, and a large recording magnetic field. In one embodiment, a width LW of a lower magnetic pole piece protuberance of a leading side magneti...

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Hauptverfasser: Ohtomo, Shigekazu, Fukui, Hiroshi, Yokoyama, Toshimi
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Sprache:eng
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creator Ohtomo, Shigekazu
Fukui, Hiroshi
Yokoyama, Toshimi
description Embodiments of the invention provide a thin film magnetic head suitable for high density recording having a small erase band ΔE and a small fringe magnetic field, and a large recording magnetic field. In one embodiment, a width LW of a lower magnetic pole piece protuberance of a leading side magnetic pole piece, at a face in contact with a write gap layer, is made smaller than a width TW of an upper magnetic pole piece front layer of a trailing side magnetic pole piece, at a face in contact with the write gap layer, and the width of the lower magnetic pole piece protuberance adjacent to the write gap layer is made larger, in a direction from the write gap layer.
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title Thin film magnetic head for high density recording and having a leading side magnetic pole piece of variable width at the media facing surface
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