[go: up one dir, main page]

FR2166305A1 - Magnetic memory element - with non-destructive read-out - Google Patents

Magnetic memory element - with non-destructive read-out

Info

Publication number
FR2166305A1
FR2166305A1 FR7200475A FR7200475A FR2166305A1 FR 2166305 A1 FR2166305 A1 FR 2166305A1 FR 7200475 A FR7200475 A FR 7200475A FR 7200475 A FR7200475 A FR 7200475A FR 2166305 A1 FR2166305 A1 FR 2166305A1
Authority
FR
France
Prior art keywords
alloy
memory element
magnetic memory
esp
shading
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7200475A
Other languages
French (fr)
Other versions
FR2166305B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bull HN Information Systems Inc
Original Assignee
Honeywell Bull Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honeywell Bull Inc filed Critical Honeywell Bull Inc
Priority to FR7200475A priority Critical patent/FR2166305A1/en
Publication of FR2166305A1 publication Critical patent/FR2166305A1/en
Application granted granted Critical
Publication of FR2166305B1 publication Critical patent/FR2166305B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/06—Thin magnetic films, e.g. of one-domain structure characterised by the coupling or physical contact with connecting or interacting conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • H01F41/24—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids
    • H01F41/26—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids using electric currents, e.g. electroplating

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Electroplating Methods And Accessories (AREA)

Abstract

Plated wire type memor element is based on a Be-Cu wire 300 mu in dia with a double layer of electroplating, the under layer between 1000-5000 angstroms, esp. 3000 angstroms thick being of 81:19-83:17 Ni-Fe alloy. The upper layer, 600-800 esp. 700 angstroms thick, is of variable composition alloy as follows. The lower 85% of the thickness is of Ni:Co:Fe alloy the proportions shading progressively, outwards from the interface, from 81:0:19-83:0:17 to 57:43:0-58:42:0. The upper 15% of the thickness is also of graded composition, in this case of Ni:Co alloy shading from 57:43-58:42 to 50:50 at the surface. All proportions given are in wt.%. Not only is read out non destructive but protection is given against stray fields.
FR7200475A 1972-01-07 1972-01-07 Magnetic memory element - with non-destructive read-out Granted FR2166305A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7200475A FR2166305A1 (en) 1972-01-07 1972-01-07 Magnetic memory element - with non-destructive read-out

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7200475A FR2166305A1 (en) 1972-01-07 1972-01-07 Magnetic memory element - with non-destructive read-out

Publications (2)

Publication Number Publication Date
FR2166305A1 true FR2166305A1 (en) 1973-08-17
FR2166305B1 FR2166305B1 (en) 1976-10-29

Family

ID=9091591

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7200475A Granted FR2166305A1 (en) 1972-01-07 1972-01-07 Magnetic memory element - with non-destructive read-out

Country Status (1)

Country Link
FR (1) FR2166305A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619454A (en) * 1945-08-30 1952-11-25 Brush Dev Co Method of manufacturing a magnetic recording medium by electrodeposition
FR1438564A (en) * 1965-04-02 1966-05-13 Bull General Electric Improvements in electrolytic processes for manufacturing ferromagnetic thin films

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2619454A (en) * 1945-08-30 1952-11-25 Brush Dev Co Method of manufacturing a magnetic recording medium by electrodeposition
FR1438564A (en) * 1965-04-02 1966-05-13 Bull General Electric Improvements in electrolytic processes for manufacturing ferromagnetic thin films

Also Published As

Publication number Publication date
FR2166305B1 (en) 1976-10-29

Similar Documents

Publication Publication Date Title
FR2166305A1 (en) Magnetic memory element - with non-destructive read-out
ES409509A1 (en) Filtering element
Ropp War in the modern world
GB1246595A (en) Improvements in magnetic memory members
GB1249642A (en) Magnetic memory carrier
Caswell et al. Professional Reading
SU633503A3 (en) Magnetic tape
Graf et al. STRESS CORROSION SENSITIVITY OF SILVER-RICH SILVER-CADMIUM AND SILVER-ZINC ALLOYS AND BRASS IN FECL 3 AND FE 2 (SO 4) 3 SOLUTIONS
JPS60126879A (en) Magnetoresistance material
Shepard The earth beneath the sea
Laqueur The Soviet Union and the Middle East
Pennington Pennington to George Sokolsky, June 6, 1947
Jack Virginia's Mother Church and the Political Conditions under Which it Grew: The Story of the Anglican Church and the Development of Religion in Virginia, 1727–1814. Volume II. By George MacLaren Brydon, Historiographer of the Diocese of Virginia, 1727–s1814. Volume II. By George MacLaren Brydon, Historiographer of the Diocese of Virginia.(Philadelphia: Church Historical Society. 1952. Pp. x, 688.)
USD178662S (en) Set of playing cards
Gamble Correspondence-1954, June 12-Aileen Gamble, Secretary to FWG
Huntsman BA, MB, FRSC VII.: Eastern Canadian Plankton.—The Distribution of the Tomopteridæ obtained during the Canadian Fisheries Expedition, 1914-1915.
GB1203457A (en) Magnetic memory devices
Kathan The Call for the 1975 International Convention
SU363116A1 (en) MAGNETIC CARD
Busch Thailand: an introduction to modern Siam
Barber Jr et al. Iron Coffins
TOMASHOV et al. Investigation of pitting repassivation on 18 Cr-14 Ni steels additionally alloyed with V, Si, Mo or Re(Potential change under pitting corrosion and repassivation on Cr-Ni steels alloyed with V, Si, Mo and Re)
Dutton Recent Distinguished Speakers
Greenberg The Meaning of History
Tate World Peace Through World Economy

Legal Events

Date Code Title Description
CL Concession to grant licenses
CL Concession to grant licenses