GB1156986A - A Process for Producing Thin Film, Magnetic Memory Elements and Elements Produced thereby - Google Patents

A Process for Producing Thin Film, Magnetic Memory Elements and Elements Produced thereby

Info

Publication number
GB1156986A
GB1156986A GB4613366A GB4613366A GB1156986A GB 1156986 A GB1156986 A GB 1156986A GB 4613366 A GB4613366 A GB 4613366A GB 4613366 A GB4613366 A GB 4613366A GB 1156986 A GB1156986 A GB 1156986A
Authority
GB
United Kingdom
Prior art keywords
alloy
annealed
drawn
thin film
magnetic memory
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.)
Expired
Application number
GB4613366A
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Publication of GB1156986A publication Critical patent/GB1156986A/en
Expired 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
    • H01F10/26—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers
    • H01F10/28—Thin magnetic films, e.g. of one-domain structure characterised by the substrate or intermediate layers characterised by the composition of the substrate

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Heads (AREA)
  • Electroplating Methods And Accessories (AREA)
  • Thin Magnetic Films (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

1,156,986. Producing composite articles. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORP. 14 Oct., 1966 [16 Oct., 1965], No. 46133/66. Heading B3A. [Also in Divisions C7 and H1] A thin film magnetic memory element is produced by covering a non-magnetic conductive ductile metallic base having a Vickers hardness of 60-200 with a ductile magnetic alloy, and elongating the element by wire drawing or sheet rolling until its cross-sectional area is less than 20% of the original and the thickness of the alloy is less than 20 Á. The base may be an alloy of Ag-Cu, Be-Cu, Ni-Cu, Ag-Ni-Cu, Cd-Cu, Cu-Sn-Zn, or Cu-Sn-ZnP, e.g. phosphor bronze. The magnetic alloy may be Co-Ni, Cu-Fe-Ni, Cu-Fe-Co, Ni-Fe-Mn, or Ni-Fe, e.g. permalloy containing 35-55% Ni or 75-85% Ni. The element may be annealed at 400-1050‹ C. before and during elongation. The covering may be applied by vacuum deposition, electroplating, or by fitting a pipe over a rod. In Example 3, a coated 10 mm. diameter rod was drawn to 6 mm. diameter,, annealed at 650‹ C., drawn to 3 mm., annealed again, and finally drawn to 0À1 mm.
GB4613366A 1965-10-16 1966-10-14 A Process for Producing Thin Film, Magnetic Memory Elements and Elements Produced thereby Expired GB1156986A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6330665 1965-10-16

Publications (1)

Publication Number Publication Date
GB1156986A true GB1156986A (en) 1969-07-02

Family

ID=13225460

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4613366A Expired GB1156986A (en) 1965-10-16 1966-10-14 A Process for Producing Thin Film, Magnetic Memory Elements and Elements Produced thereby

Country Status (2)

Country Link
DE (1) DE1564460B2 (en)
GB (1) GB1156986A (en)

Also Published As

Publication number Publication date
DE1564460B2 (en) 1971-09-09
DE1564460A1 (en) 1970-12-10

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Legal Events

Date Code Title Description
PS Patent sealed