GB1185847A - Improvements in or relating to Magnetic Store Structures - Google Patents

Improvements in or relating to Magnetic Store Structures

Info

Publication number
GB1185847A
GB1185847A GB46100/67A GB4610067A GB1185847A GB 1185847 A GB1185847 A GB 1185847A GB 46100/67 A GB46100/67 A GB 46100/67A GB 4610067 A GB4610067 A GB 4610067A GB 1185847 A GB1185847 A GB 1185847A
Authority
GB
United Kingdom
Prior art keywords
conductor
bit
layer
magnetic
thin film
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
GB46100/67A
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.)
Societe dElectronique et dAutomatisme SA
Original Assignee
Societe dElectronique et dAutomatisme SA
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 Societe dElectronique et dAutomatisme SA filed Critical Societe dElectronique et dAutomatisme SA
Publication of GB1185847A publication Critical patent/GB1185847A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
    • G11C11/15—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements using multiple magnetic layers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
    • G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
    • G11C11/16—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using elements in which the storage effect is based on magnetic spin effect
    • G11C11/165—Auxiliary circuits
    • G11C11/1675—Writing or programming circuits or methods

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Mram Or Spin Memory Techniques (AREA)
  • Semiconductor Memories (AREA)

Abstract

1,185,847. Magnetic storage apparatus. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. 9 Oct., 1967 [7 Oct., 1966], No.- 46100/67. Heading H3B. In an anisotropic magnetic thin film store a soft magnetic block provided with parallel grooves is positioned over strips of thin film. A copper carrier 1 has deposited on it a layer of silicon monoxide 2 over which is deposited an anisotropic thin film layer 3 and a copper layer 4. By etching the layers 3, 4 strips are produced as shown which extend in the direction of the easy axis. A soft magnetic ferrite block 5 provided with parallel grooves 7 in which are insulated bit/sense lines 6 is positioned over the carrier 1. Each memory bit position is indicated at 8 and the magnetic circuit of each bit position is closed through soft magnetic material 5 surrounding the corresponding conductor 6, a portion of the conductor layer 4 and a portion of the magnetic layer 3. Information is written into a bit position by energizing the appropriate word conductor 4 and applying a longer coincident bit pulse to the corresponding bit/sense conductor 6. Read-out is performed by applying a read pulse to the appropriate word conductor 4 and sensing the induced signal in bit/sense conductor 6. Due to demagnetization of the portions 9 of a strip all memory points in a strip are distinct and since word strips are spaced from one another there is no propagation of information therebetween and creeping is avoided. Due to the grooves 7 creeping along a word line is also avoided. The anisotropic thin film 3 may be formed by two layers superimposed with the interposition of a film of non-magnetic material so that non- destructive read-out is obtained.
GB46100/67A 1966-10-07 1967-10-09 Improvements in or relating to Magnetic Store Structures Expired GB1185847A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR79140A FR1520404A (en) 1966-10-07 1966-10-07 Advanced Thin Film Magnetic Memory

Publications (1)

Publication Number Publication Date
GB1185847A true GB1185847A (en) 1970-03-25

Family

ID=8618653

Family Applications (1)

Application Number Title Priority Date Filing Date
GB46100/67A Expired GB1185847A (en) 1966-10-07 1967-10-09 Improvements in or relating to Magnetic Store Structures

Country Status (5)

Country Link
BE (1) BE702993A (en)
DE (1) DE1549051A1 (en)
FR (1) FR1520404A (en)
GB (1) GB1185847A (en)
NL (1) NL6713038A (en)

Also Published As

Publication number Publication date
FR1520404A (en) 1968-04-12
BE702993A (en) 1968-01-15
DE1549051A1 (en) 1970-04-09
NL6713038A (en) 1968-04-08

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee