Browse Prior Art Database

Two Level Asymmetrical Thick Film Chevron Detector

IP.com Disclosure Number: IPCOM000086820D
Original Publication Date: 1976-Nov-01
Included in the Prior Art Database: 2005-Mar-03
Document File: 2 page(s) / 36K

Publishing Venue

IBM

Related People

Daniels, PR: AUTHOR

Abstract

Magnetic interconnects are utilized on only the leading edges between magnetic-domain thick-film chevron detector pairs. This results in chevron decoupling which raises the high-bias collapse margin and lessens the tendency for strip break-up or shrinking during crossing. In addition nonmagnetic interconnects are positioned near the chevron centers to reduce sensor multiplexing problems.

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Two Level Asymmetrical Thick Film Chevron Detector

Magnetic interconnects are utilized on only the leading edges between magnetic-domain thick-film chevron detector pairs. This results in chevron decoupling which raises the high-bias collapse margin and lessens the tendency for strip break-up or shrinking during crossing. In addition nonmagnetic interconnects are positioned near the chevron centers to reduce sensor multiplexing problems.

Heretofore, chevron detectors have been interconnected by permalloy at both the entrance and exit thereof. Since the primary magnetoresistive effect of a chevron detector is due to the permalloy interconnects, it is not necessary to have these interconnects at both the entrance and exit. A strip domain essentially affects only the interconnect directly above it. Therefore, a thick-film chevron detector is connected only on one side with permalloy, and both gold and permalloy interconnects are utilized together.

The thick film chevron detector shown has chevrons 1 with permalloy interconnects 2 on only the leading edges. The electrical path, instead of being completed by permalloy interconnects on the chevron trailing edges, is completed by nonmagnetic gold interconnects 3 downstream (with respect to strip propagation) of the chevron apexes. The combination of permalloy interconnects on only one side and gold interconnects near the center will insure that there will only be one detector signal per domain strip instead of two. This...