FI57673C - Magnetisk domaenanordning - Google Patents

Magnetisk domaenanordning Download PDF

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Publication number
FI57673C
FI57673C FI2693/73A FI269373A FI57673C FI 57673 C FI57673 C FI 57673C FI 2693/73 A FI2693/73 A FI 2693/73A FI 269373 A FI269373 A FI 269373A FI 57673 C FI57673 C FI 57673C
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FI
Finland
Prior art keywords
amorphous
magnetic
domains
substrate
medium
Prior art date
Application number
FI2693/73A
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English (en)
Finnish (fi)
Other versions
FI57673B (fi
Inventor
Praveen Chaudhari
Jerome John Cuomo
Richard Joseph Gambino
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Ibm
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Publication date
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Publication of FI57673B publication Critical patent/FI57673B/fi
Publication of FI57673C publication Critical patent/FI57673C/fi

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Classifications

    • 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
    • G11C19/085—Generating magnetic fields therefor, e.g. uniform magnetic field for magnetic domain stabilisation
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/0009—Materials therefor
    • G02F1/0036—Magneto-optical materials
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
    • G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
    • G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
    • G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
    • G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
    • G11B11/10589—Details
    • G11B11/10591—Details for improving write-in properties, e.g. Curie-point temperature
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
    • G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
    • G11C13/06—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using magneto-optical elements
    • 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
    • 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
    • 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
    • G11C19/0866—Detecting magnetic domains
    • 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
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H01F10/13—Amorphous metallic alloys, e.g. glassy metals
    • 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
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H01F10/13—Amorphous metallic alloys, e.g. glassy metals
    • H01F10/132—Amorphous metallic alloys, e.g. glassy metals containing cobalt
    • 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
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/12—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being metals or alloys
    • H01F10/13—Amorphous metallic alloys, e.g. glassy metals
    • H01F10/133—Amorphous metallic alloys, e.g. glassy metals containing rare earth metals
    • H01F10/135—Amorphous metallic alloys, e.g. glassy metals containing rare earth metals containing transition metals

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  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Thin Magnetic Films (AREA)
  • Soft Magnetic Materials (AREA)
  • Physical Vapour Deposition (AREA)
  • Developing Agents For Electrophotography (AREA)
  • Measuring Magnetic Variables (AREA)

Claims (32)

1. Magnetisk domänanordning, kännetecknad av ett magnetiskt medium, väri nämnda domäner existera, vilket medium är ett amorft magnetiskt material ned icke-magnetokristallin uniaxiell anisotropi, samt av medel för pä-verkan av nämnda domäner i nämnda amorfa magnetiska medium.
2. Anordning enligt patentkravet 1,kännetecknad därav, att nämnda amorfa magnetiska material exiserar i en mikrokristallin struktur med lokaliserad atomordning över en sträcka av ca. 100 Ä och mindre.
3. Anordning enligt patentkravet 1,kännetecknad därav, att nämnda amorfa material har lokaliserad atomordning över en sträcka av ca. 25. och mindre. 1+. Anordning enligt patentkravet 1, kännetecknad därav, att nämnda uniaxiella anisotropi är i huvudsak vinkelrätt mot nämnda amorfa magnetiska materials plan.
5· Anordning enligt patentkravet 1,kännetecknad därav, att nämnda amorfa magnetiska material utgöres av ett enda element med ett magnetiskt moment.
6. Anordning enligt patentkravet 5>kännete cknad därav, att nämnda element kommer frän n&gon av Uf-, 5f~ eller 3d-elementseriema i det periodiska systemet.
7. Anordning enligt patentkravet 1,kännetecknad därav, att nämnda amorfa magnetiska medium innehäller en mängd element, varav minst ett har ett oparat magnetisk spin.
3. Anordning enligt patentkravet 7,kännetecknad därav, att nämnda amorfa medium utgöres av en amorf legering av sällsynta jordarts- och övergängsmetaller.
9. Anordning enligt patentkravet 8,kännetecknad därav, att nämnda legering är en Gd-Co-legering.
10. Anordning enligt patentkravet 8,kännetecknad därav, att nämnda legering är en Gd-Fe-legering.
11. Anordning enligt patentkravet 7, kännetecknad därav, att nämnda amorfa magnetiska medium inenhäller en tillsats, corn kopplas anti-ferromagnetiskt tili en magnetisk atom i nämnda amorfa medium.
12. Anordning enligt patentkravet 7,kännetecknad därav, att nämnda amorfa magnetiska medium innehäller en tillsats, som kopplas ferromagnetiskt tili en magnetisk atom i nämnda amorfa medium. 57673
13. Anordning enligt patentkravet 7, kännetecknad därav, att nämnda araorfa magnetiska medium innehäller en tillsats, sem undrar atom-ordningen hos nämnda amorfa magnetiska medium rclativt bredden pä domän-gransema däri. lk. Anordning enligt patentkravet 7» k ä n n e t e c k n a d därav, att nämnda araorfa medium utgöres av en ternär legering, som är magnetiskt ordnad.
15. Anordning enligt patentkravet l,kännetecknad därav, att nämnda amorfa magnetiska material innehäller ett tillsatselement av 0, N, C eller P.
16. Anordning enligt patentkravet 1, kännetecknad därav, att nämnda amorfa magnetiska material är dopat med element, vilka uppträda i en mangd upp tili och med 50 atomprocent.
17. Anordning enligt patentkravet 1,kännetecknad därav, att nämnda uniaxiella anisotropi är parordningsanisotropi.
13. Anordning enligt patentkravet 1,kännetecknad därav, att nämnda amorfa medium är ett ark, som är anordnat pä ett substrat.
19· Anordning enligt patentkravet 13,kännetecknad därav, att nämnda substrat är en halvledare.
20. Anordning enligt patentkravet 19, kännetecknad därav, att nämnda halvledare är kisel.
21. Anordning enligt patentkravet lö,kännetecknad därav, att nämnda substrat är en isolator.
22. Anordning enligt patentkravet 1,kännetecknad av avkänningi medel för detektering av nämnda doraäners magnetiseringstillständ.
23. Anordning enligt patentkravet 22, k ä n n e t e c k n a d därav, att nämnda domäner äro magnetiska bubbeldomäner. 2h. Anordning enligt patentkravet 22,kännetecknad därav, att det amorfa mediet är ett ark som är anordnat pä ett substrat.
25. Anordning enligt patentkravet 2U,kännetecknad därav, att nämnda substrat är ett flexibelt medium. 2u. Anordning enligt patentkravet 2>4, kännetecknad därav, att nämnda substrat är ett styvt medium.
27. Anordning enligt patentkravet 2^4, kännetecknad därav, att nämnda substrat är en isolator.
28. Anordning enligt patentkravet 2U,kännetecknad därav, att nämnda substrat är kisel.
29. Anordning enligt patentkravet 2U,kännetecknad därav, att nämnda substrat är en metall.
30. Anordning enligt patentkravet 22,kännetecknad av medel för förflyttning av nämnda amorfa magnetiska medium.
FI2693/73A 1972-08-29 1973-08-29 Magnetisk domaenanordning FI57673C (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US28451372A 1972-08-29 1972-08-29
US28451372 1972-08-29

Publications (2)

Publication Number Publication Date
FI57673B FI57673B (fi) 1980-05-30
FI57673C true FI57673C (fi) 1980-09-10

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ID=23090479

Family Applications (1)

Application Number Title Priority Date Filing Date
FI2693/73A FI57673C (fi) 1972-08-29 1973-08-29 Magnetisk domaenanordning

Country Status (13)

Country Link
JP (2) JPS5734588B2 (sv)
CA (1) CA1017450A (sv)
CH (1) CH554049A (sv)
DE (1) DE2342886C3 (sv)
DK (1) DK144153C (sv)
ES (1) ES417823A1 (sv)
FI (1) FI57673C (sv)
FR (3) FR2198166B1 (sv)
GB (1) GB1436011A (sv)
IT (1) IT989040B (sv)
NO (1) NO146381C (sv)
SE (1) SE395982B (sv)
ZA (1) ZA733619B (sv)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5061111A (sv) * 1973-09-28 1975-05-26
JPS5163492A (en) * 1974-11-29 1976-06-01 Kokusai Denshin Denwa Co Ltd Jiseiusumakuno seizohoho
US4013803A (en) * 1975-10-30 1977-03-22 Sperry Rand Corporation Fabrication of amorphous bubble film devices
JPS5850337B2 (ja) * 1976-10-26 1983-11-10 富士ゼロックス株式会社 プリンタ
DE3348423C2 (de) * 1982-05-10 1994-11-17 Canon Kk Verwendung einer amorphen magnetischen quaternären GdTbFeCo-Legierung für die Herstellung einer magnetooptischen Aufzeichnungsschicht
JPS58196639A (ja) * 1982-05-10 1983-11-16 Canon Inc 光熱磁気記録媒体
JPS5961011A (ja) * 1982-09-30 1984-04-07 Ricoh Co Ltd 光磁気記録媒体
JPS61141925A (ja) * 1985-12-14 1986-06-28 Kobe Steel Ltd 原料粉末予熱装置の排熱利用方法
JPH0323228Y2 (sv) * 1986-06-19 1991-05-21
JPS6319541U (sv) * 1986-07-22 1988-02-09
CN114214507B (zh) * 2021-12-17 2023-08-08 安徽省湖滨机械厂 一种高性能铁基非晶纳米晶带材的热处理装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3427154A (en) * 1964-09-11 1969-02-11 Ibm Amorphous alloys and process therefor

Also Published As

Publication number Publication date
JPS5734588B2 (sv) 1982-07-23
CH554049A (de) 1974-09-13
NO146381B (no) 1982-06-07
FR2198232A1 (sv) 1974-03-29
CA1017450A (en) 1977-09-13
GB1436011A (en) 1976-05-19
DE2342886C3 (de) 1981-09-24
FR2198166B1 (sv) 1976-05-07
JPS4947043A (sv) 1974-05-07
JPS57172318A (en) 1982-10-23
FR2198216A1 (sv) 1974-03-29
JPS5810727B2 (ja) 1983-02-26
ES417823A1 (es) 1976-06-16
ZA733619B (en) 1975-01-29
FR2198166A1 (sv) 1974-03-29
DK144153B (da) 1981-12-21
SE395982B (sv) 1977-08-29
FR2198216B1 (sv) 1978-01-20
FR2198232B1 (sv) 1976-06-18
AU5879673A (en) 1975-02-06
DE2342886A1 (de) 1974-03-28
IT989040B (it) 1975-05-20
DK144153C (da) 1982-06-21
NO146381C (no) 1982-09-15
FI57673B (fi) 1980-05-30
DE2342886B2 (de) 1980-09-25

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