GB1237905A - - Google Patents

Info

Publication number
GB1237905A
GB1237905A GB1237905DA GB1237905A GB 1237905 A GB1237905 A GB 1237905A GB 1237905D A GB1237905D A GB 1237905DA GB 1237905 A GB1237905 A GB 1237905A
Authority
GB
United Kingdom
Prior art keywords
layers
alternate
magnetizations
coil
magnetic material
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
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 filed Critical
Publication of GB1237905A publication Critical patent/GB1237905A/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
    • G11C11/16—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
    • 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

Abstract

1,237,905. Transformers; inductors; pulse storage devices. SPERRY RAND CORP. 14 June, 1968 [16 .Tune, 1967], No. 28476/68. Heading H1T. A transformer or inductor includes a core 10, Fig. 1, comprising a number of superposed layers 14a-14d, 16a-16d, of anisotropic magnetic material separated by insulating layers 18, alternate magnetic layers having also a region 20 of high coercivity material, all of which regions are permanently magnetized in the same direction Mp, Fig. 4. The layers of anisotropic magnetic material all have their preferred axis of magnetization parallel to Mp, so that when windings 40, 46 are not energized alternate layers are magnetized in opposite directions. The winding(s) 40 46 are arranged to induce fields perpendicular to Mp, so that when A.C. is applied to a winding the magnetizations M 1 , M 2 of alternate magnetic layers oscillate as described in Specification 1,237,904. The permanently magnetized regions 20 have a high percentage of cobalt. Substrate 12 may be glass or metal. Pulse storage element.-The element includes a core 10 as shown in Fig. 1. The layers of anisotropic magnetic material all have their preferred axis of magnetization 52, Fig. 5, perpendicular to Mp, so that when no signal is being applied to coil 50 the magnetizations M 1 , M 2 of alternate layers are divergent, as shown, owing to the influence of the field of permanently magnetized regions 20. Application of a signal to coil 50 causes the magnetizations M 1 , M 2 to rotate in opposite directions as described in Specification 1,237,904, through approximately 120 degrees, the switching being detected by sense coil 56.
GB1237905D 1967-06-16 1968-06-14 Expired GB1237905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US64663867A 1967-06-16 1967-06-16

Publications (1)

Publication Number Publication Date
GB1237905A true GB1237905A (en) 1971-07-07

Family

ID=24593849

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1237905D Expired GB1237905A (en) 1967-06-16 1968-06-14

Country Status (5)

Country Link
US (1) US3470550A (en)
JP (1) JPS5025296B1 (en)
DE (1) DE1764482A1 (en)
FR (1) FR1581575A (en)
GB (1) GB1237905A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3577134A (en) * 1969-09-16 1971-05-04 Sperry Rand Corp Method of operating a convertible memory system
JPS4926796B1 (en) * 1970-02-27 1974-07-11
US4845454A (en) * 1986-07-29 1989-07-04 Toko, Inc. Inductance element with core of magnetic thin films

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3095555A (en) * 1961-02-13 1963-06-25 Sperry Rand Corp Magnetic memory element
DE1252739B (en) * 1964-03-17 1967-10-26 Siemens Aktiengesellschaft, Berlin und München, München Storage element with stacked magnetic layers

Also Published As

Publication number Publication date
US3470550A (en) 1969-09-30
DE1764482A1 (en) 1972-03-30
JPS5025296B1 (en) 1975-08-22
FR1581575A (en) 1969-09-19

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees