GB1371492A - Magnetic materials - Google Patents

Magnetic materials

Info

Publication number
GB1371492A
GB1371492A GB2249374A GB2249374A GB1371492A GB 1371492 A GB1371492 A GB 1371492A GB 2249374 A GB2249374 A GB 2249374A GB 2249374 A GB2249374 A GB 2249374A GB 1371492 A GB1371492 A GB 1371492A
Authority
GB
United Kingdom
Prior art keywords
per cent
cro3
tes2
chromium
h6teo
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
GB2249374A
Other languages
English (en)
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Publication of GB1371492A publication Critical patent/GB1371492A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
    • G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
    • G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
    • G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
    • G11B5/70636—CrO2

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
GB2249374A 1970-09-22 1971-09-22 Magnetic materials Expired GB1371492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP45083150A JPS521116B1 (enExample) 1970-09-22 1970-09-22

Publications (1)

Publication Number Publication Date
GB1371492A true GB1371492A (en) 1974-10-23

Family

ID=13794181

Family Applications (2)

Application Number Title Priority Date Filing Date
GB2249374A Expired GB1371492A (en) 1970-09-22 1971-09-22 Magnetic materials
GB4420971A Expired GB1370931A (en) 1970-09-22 1971-09-22 Magnetic materials

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB4420971A Expired GB1370931A (en) 1970-09-22 1971-09-22 Magnetic materials

Country Status (7)

Country Link
JP (1) JPS521116B1 (enExample)
CA (1) CA976743A (enExample)
DE (1) DE2147531A1 (enExample)
FR (1) FR2108364A5 (enExample)
GB (2) GB1371492A (enExample)
IT (1) IT939439B (enExample)
NL (1) NL153155B (enExample)

Also Published As

Publication number Publication date
FR2108364A5 (enExample) 1972-05-19
NL7113034A (enExample) 1972-03-24
CA976743A (en) 1975-10-28
GB1370931A (en) 1974-10-16
IT939439B (it) 1973-02-10
NL153155B (nl) 1977-05-16
DE2147531A1 (de) 1972-05-04
JPS521116B1 (enExample) 1977-01-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years