GB1433698A - Composite structure for magnetic bubble domains - Google Patents

Composite structure for magnetic bubble domains

Info

Publication number
GB1433698A
GB1433698A GB4349874A GB4349874A GB1433698A GB 1433698 A GB1433698 A GB 1433698A GB 4349874 A GB4349874 A GB 4349874A GB 4349874 A GB4349874 A GB 4349874A GB 1433698 A GB1433698 A GB 1433698A
Authority
GB
United Kingdom
Prior art keywords
layer
magnetic
bubble domain
propagation
overlay
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
GB4349874A
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.)
Boeing North American Inc
Original Assignee
Rockwell International 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 Rockwell International Corp filed Critical Rockwell International Corp
Publication of GB1433698A publication Critical patent/GB1433698A/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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
    • G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
    • G11C19/0808—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation
    • G11C19/0816—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation using a rotating or alternating coplanar magnetic field

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Thin Magnetic Films (AREA)

Abstract

1433698 Magnetic storage devices ROCKWELL INTERNATIONAL CORP 8 Oct 1974 [14 Dec 1973] 43498/74 Heading H3B To reduce the polarization of a magnetic propagation overlay 14 due to the high saturation magnetization of submicron bubbles in a layer 11 of a bubble domain material such as a magnetic rare earth garnet or amorphous metallic GdCo, a magnetic shunt layer 21 of a high permeability material such as permalloy is interposed between the bubble domain layer 11 and the propagation overlay. The magnetic shunt layer may be distinct, or may be an integral thin region of the bubble domain layer the composition of which is changed during manufacture. The propagation overlay consists of permalloy T and I bars, Fig. 2 (not shown), spaced from the magnetic shunt layer by an insulating material 13 such as SiO 2 . A further insulating layer 22 may optionally be provided between the bubble domain layer and the magnetic shunt.
GB4349874A 1973-12-14 1974-10-08 Composite structure for magnetic bubble domains Expired GB1433698A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42505873A 1973-12-14 1973-12-14

Publications (1)

Publication Number Publication Date
GB1433698A true GB1433698A (en) 1976-04-28

Family

ID=23684969

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4349874A Expired GB1433698A (en) 1973-12-14 1974-10-08 Composite structure for magnetic bubble domains

Country Status (4)

Country Link
JP (1) JPS552676B2 (en)
CA (1) CA1020275A (en)
DE (1) DE2434481C3 (en)
GB (1) GB1433698A (en)

Also Published As

Publication number Publication date
CA1020275A (en) 1977-11-01
JPS5093050A (en) 1975-07-24
DE2434481A1 (en) 1975-06-26
JPS552676B2 (en) 1980-01-21
DE2434481C3 (en) 1978-08-17
DE2434481B2 (en) 1977-12-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee