Thin-film magnetic head having heating element with...

Details Thin-film magnetic head having heating element with... Thin-film magnetic head having heating element with...

2011-06-14

2011-06-14

Renner, Craig A. (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Core

C360S125740

Reexamination Certificate

active

07961429

ABSTRACT:
Provided is a thin-film magnetic head having a heating element in which excessive increase in temperature is suppressed corresponding to smaller area of the shield layers of the MR effect element. The thin-film magnetic head comprises: an electromagnetic coil element; an MR effect element having two shield layers sandwiching an MR effect multilayer; and a heating element having a heating layer provided at least between the electromagnetic coil element and the MR effect element, and further in the head, at least a portion of a run-off portion of the heating layer running off the shield layer closer to the heating layer than the other shield layer has a resistance per unit length smaller than a resistance per unit length of the other portions than the portion running off the shield layer.

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patent: 2005/0117242 (2005-06-01), Taguchi
patent: 2006/0103981 (2006-05-01), Kiyono et al.
patent: 2008/0019041 (2008-01-01), Aoki
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patent: 2006-53973 (2006-02-01), None
patent: 2006-351115 (2006-12-01), None

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