US5700588A
Expired / Lapsed
US
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Magnetoresistance effect element
Assignee: Toshiba Corp
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Filing: 1996-03-08
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Granted: 1997-12-23
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Expires: 2016-03-08
Abstract
Abstract A magnetoresistance effect element comprises the multilayer formed by alternately stacking magnetic and nonmagnetic layers. The magnetic layers containing three magnetic elements of Fe, Co and Ni. Any two magnetic layers adjacent to each other with one of the nonmagnetic layer interposed therebetween are antiferromagnetically coupled under a condition where a magnetic field is not substantially applied thereto.
Inventors
- 👤 Yoshiaki Saito
- 👤 Shiho Okuno
- 👤 Koichiro Inomata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:52
CPC Classifications
H; H10; H10N; H10N50/00; H10N50/80; H10N50/85; B; B82; B82Y; B82Y25/00; G; G01; G01R; G01R33/00; G01R33/02; G01R33/06; G01R33/09; G01R33/093; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928; Y10T; Y10T428/00; Y10T428/12; Y10T428/12465; Y10T428/12493; Y10T428/12632; Y10T428/12771; Y10T428/12861; Y10T428/12875; Y10T428/12896; Y10T428/12903; Y10T428/1291
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A magnetoresistance effect element comprising a multilayer formed by alternatively stacking at least two magnetic layers and at least one non-magnetic layer in a manner to produce a magnetoresistance effect, said magnetic layers consisting essentially of an alloy of the formula: (Fe.sub.1-x Co.sub.x).sub.y Ni.sub.1-y wherein 0<x<1 and 0<Y<1 and having a thickness of from 2 to 50 Å, said non-magnetic layer consisting essentially of Cu and alloys of Cu, said non-magnetic layer having a thickness of from 2 to 100 Å.
Claim 2
Dependent Claim
81 words
A magnetoresistance effect element comprising a multilayer formed by alternatively stacking at least two magnetic layers and at least one non-magnetic layer in a manner to produce a magnetoresistance effect, said magnetic layers consisting essentially of an alloy of the formula: (Fe.sub.1-x Co.sub.x).sub.y Ni.sub.1-y wherein 0<x<1 and 0<Y<1 and having a thickness of from 2 to 50 Å, said non-magnetic layer consisting essentially of Cu and alloys of Cu, said non-magnetic layer having a thickness of from 2 to 100 Å.
References Cited (Backward Citations)
JPH0223681A
Cited
US5243316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-12-22 | 2001-06-23 | 2001-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-12-22 | 2005-06-23 | 2005-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-12-22 | 2009-06-23 | 2009-12-23 | $7700.00 | Window Closed / Lapsed |