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US 7,256,970 B2Granted
Elimination of electric-pop noise in MR/GMR device
AssigneeSAE Magnetics (H.K.) Ltd.
InventorsYong Shen, Kwok Kam Leung, Hiroshi Kiyono, Tetsuo Miyazaki
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Abstract
A magnetic reading head comprising: a bottom shield; a top shield; an AMR device with MR and SAL separated by a thin insulating layer; a first insulting gap layer between said bottom shield and said AMR; a second insulating gap layer between said AMR and said top shield; a conductive layer contact at one end region of said MR and SAL. Furthermore, magnetic reading heads with GMR device free of electric-pop noise also are disclosed.
Claims6
A magnetic reading head for use with a magnetic recording device comprising:
- a first shield;
- a second shield;
- a GMR device spaced apart from said first and second shields, wherein the GMR device has a first end and a second end;
- a first insulating gap layer between said GMR device and one of said first and second shields;
- a second insulating gap layer between said GMR device and the other one of said first and second shields;
- a longitudinal bias layer contacting the first end of the GMR device;
- a lead layer contacting the second end of the GMR device;
- and
- a conductive layer contacting electrically one of the longitudinal bias layer and the lead layer to only one of said first and second shields.
6 more elements
Dependencies are inferred from the claim text.