NL7900921A - Thermomagnetische informatiedrager en optische geheu- geninrichting voorzien van een dergelijke informatie- drager. - Google Patents

Thermomagnetische informatiedrager en optische geheu- geninrichting voorzien van een dergelijke informatie- drager. Download PDF

Info

Publication number
NL7900921A
NL7900921A NL7900921A NL7900921A NL7900921A NL 7900921 A NL7900921 A NL 7900921A NL 7900921 A NL7900921 A NL 7900921A NL 7900921 A NL7900921 A NL 7900921A NL 7900921 A NL7900921 A NL 7900921A
Authority
NL
Netherlands
Prior art keywords
information carrier
rare earth
iron alloy
composition
information
Prior art date
Application number
NL7900921A
Other languages
English (en)
Dutch (nl)
Original Assignee
Philips Nv
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 Philips Nv filed Critical Philips Nv
Priority to NL7900921A priority Critical patent/NL7900921A/nl
Priority to US06/111,139 priority patent/US4310899A/en
Priority to DE19803002642 priority patent/DE3002642A1/de
Priority to GB8003478A priority patent/GB2043698B/en
Priority to JP1159580A priority patent/JPS55105832A/ja
Priority to FR8002623A priority patent/FR2448764A1/fr
Publication of NL7900921A publication Critical patent/NL7900921A/nl

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
    • H01F10/08—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
    • H01F10/136—Amorphous metallic alloys, e.g. glassy metals containing rare earth metals containing transition metals containing iron
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
    • G03G5/16—Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Thin Magnetic Films (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Hard Magnetic Materials (AREA)
NL7900921A 1979-02-06 1979-02-06 Thermomagnetische informatiedrager en optische geheu- geninrichting voorzien van een dergelijke informatie- drager. NL7900921A (nl)

Priority Applications (6)

Application Number Priority Date Filing Date Title
NL7900921A NL7900921A (nl) 1979-02-06 1979-02-06 Thermomagnetische informatiedrager en optische geheu- geninrichting voorzien van een dergelijke informatie- drager.
US06/111,139 US4310899A (en) 1979-02-06 1980-01-10 Thermomagnetic record carrier
DE19803002642 DE3002642A1 (de) 1979-02-06 1980-01-25 Thermomagnetischer datentraeger und optischer speicher mit einem derartigen datentraeger
GB8003478A GB2043698B (en) 1979-02-06 1980-02-01 Thermomagnetic record carrier
JP1159580A JPS55105832A (en) 1979-02-06 1980-02-04 Thermomagnetic recording carrier
FR8002623A FR2448764A1 (fr) 1979-02-06 1980-02-06 Porteur d'information thermomagnetique et memoire optique munie d'un tel porteur d'information

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL7900921A NL7900921A (nl) 1979-02-06 1979-02-06 Thermomagnetische informatiedrager en optische geheu- geninrichting voorzien van een dergelijke informatie- drager.
NL7900921 1979-06-02

Publications (1)

Publication Number Publication Date
NL7900921A true NL7900921A (nl) 1980-08-08

Family

ID=19832579

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7900921A NL7900921A (nl) 1979-02-06 1979-02-06 Thermomagnetische informatiedrager en optische geheu- geninrichting voorzien van een dergelijke informatie- drager.

Country Status (6)

Country Link
US (1) US4310899A (zh)
JP (1) JPS55105832A (zh)
DE (1) DE3002642A1 (zh)
FR (1) FR2448764A1 (zh)
GB (1) GB2043698B (zh)
NL (1) NL7900921A (zh)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4467383A (en) * 1980-02-23 1984-08-21 Sharp Kabushiki Kaisha Magnetooptic memory medium
NL8203725A (nl) * 1982-09-27 1984-04-16 Philips Nv Thermo-magneto-optische geheugeninrichting en registratiemedium daarvoor.
EP0134792A1 (en) * 1983-01-24 1985-03-27 Western Electric Company, Incorporated Magneto-electric pulse generating device
JPS59178641A (ja) * 1983-03-29 1984-10-09 Kokusai Denshin Denwa Co Ltd <Kdd> 光磁気記録媒体
US4721658A (en) * 1984-04-12 1988-01-26 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
US4833043A (en) * 1983-05-17 1989-05-23 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
EP0305666B1 (en) * 1983-05-17 1993-06-30 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
US4569881A (en) * 1983-05-17 1986-02-11 Minnesota Mining And Manufacturing Company Multi-layer amorphous magneto optical recording medium
US4615944A (en) * 1983-05-17 1986-10-07 Minnesota Mining And Manufacturing Company Amorphous magneto optical recording medium
CA1224270A (en) * 1983-09-16 1987-07-14 Junji Hirokane Magneto-optic memory element
JPS6079702A (ja) * 1983-10-06 1985-05-07 Kokusai Denshin Denwa Co Ltd <Kdd> 光磁気記録媒体
JPS60253041A (ja) * 1984-05-29 1985-12-13 Agency Of Ind Science & Technol 光熱磁気記録媒体
US5100741A (en) * 1984-09-12 1992-03-31 Seiko Epson Corporation Magneto-optic recording systems
JPH0673197B2 (ja) * 1985-02-25 1994-09-14 株式会社東芝 光磁気記録媒体とその製造方法
JPS61214254A (ja) * 1985-03-20 1986-09-24 Hitachi Ltd 光磁気記録材料
NL8600647A (nl) * 1986-03-13 1987-10-01 Philips Nv Magneto-optisch registratie-element en een magneto-optische registratie-inrichting.
JP2673807B2 (ja) * 1987-10-30 1997-11-05 パイオニア株式会社 光磁気記録媒体の製造方法
US5294523A (en) * 1988-08-01 1994-03-15 Matsushita Electric Industrial Co., Ltd. Optical information recording medium
JPH02135730U (zh) * 1989-04-18 1990-11-13
JPH06139621A (ja) * 1992-10-29 1994-05-20 Matsushita Electric Ind Co Ltd 光記録媒体
JP3129593B2 (ja) * 1994-01-12 2001-01-31 川崎定徳株式会社 希土類・鉄・ボロン系燒結磁石又はボンド磁石の製造法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB713370A (en) * 1952-04-18 1954-08-11 Nat Res Dev Improvements in or relating to ferrite magnetic materials
GB1386763A (en) * 1970-11-13 1975-03-12 Mullard Ltd Data storage methods
US3979736A (en) * 1971-10-07 1976-09-07 Plessey Handel Und Investments A.G. Circular magnetic domain devices
NL7508707A (en) * 1975-07-22 1977-01-25 Ir G Ped I Gadolinium iron alloy for thermomagnetic recording - with high sensitivity for use with gallium arsenide laser

Also Published As

Publication number Publication date
JPS6260738B2 (zh) 1987-12-17
GB2043698B (en) 1983-06-15
FR2448764B1 (zh) 1983-02-04
JPS55105832A (en) 1980-08-13
GB2043698A (en) 1980-10-08
DE3002642A1 (de) 1980-08-14
US4310899A (en) 1982-01-12
DE3002642C2 (zh) 1988-12-01
FR2448764A1 (fr) 1980-09-05

Similar Documents

Publication Publication Date Title
NL7900921A (nl) Thermomagnetische informatiedrager en optische geheu- geninrichting voorzien van een dergelijke informatie- drager.
US8329319B2 (en) Phase change magnetic material
Alebrand et al. Interplay of heating and helicity in all-optical magnetization switching
KR930001616B1 (ko) 비결정 자기 광학 기록 매체 및 그 제조방법
US4464437A (en) Magneto-optical memory element
NL192585C (nl) Registratiemedium dat het magneto-optisch Kerr-effect benut.
US5666346A (en) Super-resolution magnetooptical recording medium using magnetic phase transition material, and method for reproducing information from the medium
CA1218149A (en) Thermo-magnetic recording of binary digital information
JP2633464B2 (ja) 磁気光学的記憶装置および磁性材料
US5169504A (en) Method for preparing a magneto optic memory
US4710431A (en) Magnetooptical recording element and a magnetooptical recording device
Gan Structure and properties of amorphous thin film for optical data storage
Masuda et al. Preparation, magnetic and magneto-optic properties of small-crystallite MnBi films
Nakagawa et al. Crystal Growth Process of Rb-Doped Iron Garnet Films for MO Recording Prepared by Pyrolysis
Urner-Wille et al. Compensation point switching in homogeneous amorphous GdFe-films
US20030175554A1 (en) Magneto-optic recording medium recordable at ultrahigh recording density
Do Properties of evaporated cobalt/platinum multilayer thin films for optical recording
JP3010684B2 (ja) 光記録媒体
Meiklejohn et al. Stability Of Perpendicular Domains In Thermomagnetic Recording Materials
Greidanus et al. A study of the thermal switching behavior in GdTbFe magneto‐optic films using two laser beams
Chen et al. An investigation of optical memory techniques
Boudjemline Studies on Co/Pt Multilayers As Second-Generation Magneto-Optic Storage Media
JPH07192329A (ja) 磁気記録媒体
Shen Magnetic and magneto-optical properties of nano-structured multilayer thin films
JPH04142007A (ja) 光磁気記録媒体

Legal Events

Date Code Title Description
A1B A search report has been drawn up
BV The patent application has lapsed