Patent EP0355044A2 successfully refreshed from Google Patents.
EP0355044A2
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Magnetoresistive read transducer assembly
Assignee: International Business Machines Corp
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Filing: 1989-07-04
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Granted: —
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Expires: 2009-07-04
Abstract
Abstract The spaced electrically conductive lead structures (18, 19) of a magnetoresistive read transducer comprise a thin film (30) of tungsten and a thin film overlayer (31) formed of a material taken from the group consisting of Ti, Ta, Cr, Zr, Hf, and TiW. The lead structures may additionally comprise a thin film underlayer (29) formed of a material taken from the same group of metals as the overlayer.
Inventors
- 👤 James K. Howard
- 👤 Hung-Chang W. Huang
- 👤 Cherngye Hwang
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 14:04
CPC Classifications
G; G11; G11B; G11B5/00; G11B5/127; G11B5/33; G11B5/39; G11B5/3903
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
66 words
A magnetoresistive read transducer assembly including a pair of electrically conductive lead structures (18, 19) in electrical contact with a thin film of magnetoresistive material, characterised by the lead structures comprising a thin film (30) of tungsten and a thin film overlayer (31) formed of a material taken from the group consisting of titanium, chromium, tantalum, zirconium, hafnium and a titanium-tungsten alloy overlying the tungsten film.
Claim 2
Dependent Claim
66 words
A magnetoresistive read transducer assembly including a pair of electrically conductive lead structures (18, 19) in electrical contact with a thin film of magnetoresistive material, characterised by the lead structures comprising a thin film (30) of tungsten and a thin film overlayer (31) formed of a material taken from the group consisting of titanium, chromium, tantalum, zirconium, hafnium and a titanium-tungsten alloy overlying the tungsten film.
Claim 3
Dependent Claim
47 words
A magnetoresistive read transducer assembly as claimed in claim 1, in which each of the lead structures further comprises a thin film underlayer (29) formed of a material taken from the group consisting of titanium, chromium, tantalum, zirconium, hafnium and a titanium-tungsten alloy underlying the tungsten film.
Claim 4
Dependent Claim
24 words
A magnetoresistive read transducer assembly as claimed in claim 1 or claim 2, in which the thin film overlayer consists of tantalum or titanium.
Claim 5
Dependent Claim
27 words
A magnetoresistive read transducer assembly as claimed in any preceding claim, in which the tungsten film is 100-500nm thick and the thin film overlayer is 2.5-20nm thick.
References Cited (Backward Citations)
No citation records indexed.
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