US5523172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetoresistance effect element
Assignee: Toshiba Corp
•
Filing: 1994-04-28
•
Granted: 1996-06-04
•
Expires: 2014-04-28
Abstract
Abstract A magnetoresistance effect element comprises the multilayer formed by alternately stacking magnetic and nonmagnetic layers. The magnetic layers containing at least two magnetic elements selected from a group of magnetic elements consisting 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
2026-11-02 07:08
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: 4
Claim 1
Independent Claim
89 words
A magnetoresistance effect element, comprising a multilayer formed by alternately 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 represented by Fe 1-x Co x , wherein 0.5≦X<1 and having a thickness of from 2 to 50Å, said non-magnetic layer consisting essentially of an element selected from the group consisting of Cu and an alloy containing at least Cu, said non-magnetic layer having a thickness of from 2 to 100Å.
Claim 2
Dependent Claim
89 words
A magnetoresistance effect element, comprising a multilayer formed by alternately 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 represented by Fe 1-x Co x , wherein 0.5≦X<1 and having a thickness of from 2 to 50Å, said non-magnetic layer consisting essentially of an element selected from the group consisting of Cu and an alloy containing at least Cu, said non-magnetic layer having a thickness of from 2 to 100Å.
Claim 3
Dependent Claim
15 words
The magnetoresistance effect element as claimed in claim 1, wherein said non-magnetic layer contains Cu.
Claim 4
Dependent Claim
16 words
The magnetoresistance effect element as claimed in claim 1, wherein said non-magnetic layer contains an alloy.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-06-04 | 1999-12-04 | 2000-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-06-04 | 2003-12-04 | 2004-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-06-04 | 2007-12-04 | 2008-06-04 | $7700.00 | Window Closed / Lapsed |