Thin-film magnetic head, head gimbal assembly and hard disk...

Details Thin-film magnetic head, head gimbal assembly and hard disk... Thin-film magnetic head, head gimbal assembly and hard disk...

2005-03-07

2009-06-23

Miller, Brian E (Department: 2627)

Dynamic magnetic information storage or retrieval

Head

Magnetoresistive reproducing head

C360S125320

Reexamination Certificate

active

07551407

ABSTRACT:
A read head comprises: a bottom shield layer; a top shield layer; an MR element disposed between the bottom shield layer and the top shield layer; a bottom shield gap film disposed between the bottom shield layer and the MR element; and a top shield gap film disposed between the top shield layer and the MR element. The MR element has a first end closer to the air bearing surface and a second end opposite to the first end. An adjacent layer made of a metal material is adjacent to the second end with an insulating film disposed in between. The material making up the adjacent layer has a linear thermal expansion coefficient whose absolute value is 6×10−6/° C. or smaller at a temperature of 30° C., and preferably 1×10−6/° C. or smaller.

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