JPS5552205A - Garnet film for magnetic bubble memory element - Google Patents

Garnet film for magnetic bubble memory element

Info

Publication number
JPS5552205A
JPS5552205A JP12510178A JP12510178A JPS5552205A JP S5552205 A JPS5552205 A JP S5552205A JP 12510178 A JP12510178 A JP 12510178A JP 12510178 A JP12510178 A JP 12510178A JP S5552205 A JPS5552205 A JP S5552205A
Authority
JP
Japan
Prior art keywords
garnet film
memory element
formula
magnetic bubble
bubble 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.)
Granted
Application number
JP12510178A
Other languages
Japanese (ja)
Other versions
JPS6057210B2 (en
Inventor
Hitoshi Ikeda
Fumihiko Ishida
Ken Sugita
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP53125101A priority Critical patent/JPS6057210B2/en
Priority to DE19792941442 priority patent/DE2941442A1/en
Priority to GB7935577A priority patent/GB2034297B/en
Priority to NL7907616A priority patent/NL178920C/en
Publication of JPS5552205A publication Critical patent/JPS5552205A/en
Publication of JPS6057210B2 publication Critical patent/JPS6057210B2/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
    • 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
    • H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
    • H01F10/20—Ferrites
    • H01F10/24—Garnets
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/14—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates
    • H01F41/24—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids
    • H01F41/28—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for applying magnetic films to substrates from liquids by liquid phase epitaxy

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Thin Magnetic Films (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Magnetic Treatment Devices (AREA)
  • Prostheses (AREA)

Abstract

PURPOSE: To obtain a bublle memory film for a high-density memory having a bubble diameter of less than 1.5μm, limiting displacement of aluminum of an aluminum-displacing type garnet film and also displacement of more than 2 kinds of selected rare earths.
CONSTITUTION: This has a composition which can be expressed, in general, by a formula of R1 3-xR2 xFe5-yAlyO12. However, R1 in the formula is to be more than 1 kind of elements including Y, Gd, Yb, Tm, Lu and La, and RII is to be 1 kind or more of these elements and selected to meet the condition of 0.5<x<2.0, 0.2,y< 0.9. Further, in case if Gd is used for RI, the amount of Gd is to become less than 0.5 per molecular formula. If Eu is used for RII, the amount of Eu is to become less than 1.4 per molecular formula.
COPYRIGHT: (C)1980,JPO&Japio
JP53125101A 1978-10-13 1978-10-13 Garnet film for magnetic bubble memory elements Expired JPS6057210B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP53125101A JPS6057210B2 (en) 1978-10-13 1978-10-13 Garnet film for magnetic bubble memory elements
DE19792941442 DE2941442A1 (en) 1978-10-13 1979-10-12 GRENADE FILM FOR A MAGNETIC BUBBLE STORAGE ELEMENT
GB7935577A GB2034297B (en) 1978-10-13 1979-10-12 Garnet film for a magnetic bubble device
NL7907616A NL178920C (en) 1978-10-13 1979-10-15 MAGNETIC BUBBLE MEMORY ELEMENT.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53125101A JPS6057210B2 (en) 1978-10-13 1978-10-13 Garnet film for magnetic bubble memory elements

Publications (2)

Publication Number Publication Date
JPS5552205A true JPS5552205A (en) 1980-04-16
JPS6057210B2 JPS6057210B2 (en) 1985-12-13

Family

ID=14901870

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53125101A Expired JPS6057210B2 (en) 1978-10-13 1978-10-13 Garnet film for magnetic bubble memory elements

Country Status (4)

Country Link
JP (1) JPS6057210B2 (en)
DE (1) DE2941442A1 (en)
GB (1) GB2034297B (en)
NL (1) NL178920C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5642311A (en) * 1979-09-17 1981-04-20 Hitachi Ltd Garnet film for magnetic bubble
US4433034A (en) * 1982-04-12 1984-02-21 Allied Corporation Magnetic bubble layer of thulium-containing garnet
WO1995016269A1 (en) * 1993-12-06 1995-06-15 Kirbitov, Viktor Mikhailovich Ferromagnetic material and method of manufacturing the same
JPH11340038A (en) * 1998-05-22 1999-12-10 Murata Mfg Co Ltd Magnetic garnet single crystal film, manufacture thereof, and magnetostatic wave device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825197A (en) * 1971-08-04 1973-04-02
JPS4855399A (en) * 1971-11-15 1973-08-03

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7607959A (en) * 1976-07-19 1978-01-23 Philips Nv MAGNETIC BUBBLE DOMAIN MATERIAL.

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4825197A (en) * 1971-08-04 1973-04-02
JPS4855399A (en) * 1971-11-15 1973-08-03

Also Published As

Publication number Publication date
DE2941442A1 (en) 1980-04-17
GB2034297B (en) 1982-10-13
NL178920C (en) 1986-06-02
GB2034297A (en) 1980-06-04
NL7907616A (en) 1980-04-15
JPS6057210B2 (en) 1985-12-13
DE2941442C2 (en) 1989-10-19
NL178920B (en) 1986-01-02

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