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DUAL GMR SENSOR WITH LARGER SHEET RESISTANCE

IP.com Disclosure Number: IPCOM000014760D
Original Publication Date: 2000-Apr-01
Included in the Prior Art Database: 2003-Jun-20

Publishing Venue

IBM

Abstract

A dual GMR sensor offers large magnetoresistance ratio. However, sheet resistance of the head drops for DUAL sensors due to increase of total thickness. The prior art DUAL sensors use the following configuration: Ta/PtMn/Co90Fe10/Ru/Co90Fe10/Cu/Co90Fe10/NiFe/Co90Fe10/Cu/Co90Fe10/Ru/Co90Fe10/Pt Mn/Ta Embodiment 1: Ta/PtMn/Co50Fe50/Ru/Co50Fe50/Cu/Co90Fe10/NiFe/Co90Fe10/Cu/Co50Fe50/Ru/Co50Fe50/Pt Mn/Ta