FR1154191A - Ferromagnetic chromium oxide and process for preparing it - Google Patents

Ferromagnetic chromium oxide and process for preparing it

Info

Publication number
FR1154191A
FR1154191A FR1154191DA FR1154191A FR 1154191 A FR1154191 A FR 1154191A FR 1154191D A FR1154191D A FR 1154191DA FR 1154191 A FR1154191 A FR 1154191A
Authority
FR
France
Prior art keywords
preparing
chromium oxide
ferromagnetic chromium
ferromagnetic
oxide
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
Other languages
French (fr)
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Application granted granted Critical
Publication of FR1154191A publication Critical patent/FR1154191A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
FR1154191D 1955-06-14 1956-06-13 Ferromagnetic chromium oxide and process for preparing it Expired FR1154191A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1154191XA 1955-06-14 1955-06-14

Publications (1)

Publication Number Publication Date
FR1154191A true FR1154191A (en) 1958-04-03

Family

ID=22361269

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1154191D Expired FR1154191A (en) 1955-06-14 1956-06-13 Ferromagnetic chromium oxide and process for preparing it

Country Status (1)

Country Link
FR (1) FR1154191A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3034988A (en) * 1958-08-22 1962-05-15 Du Pont Modified chromium oxide ferromagnetic compositions, their preparation and use
US3068176A (en) * 1958-03-31 1962-12-11 Du Pont Ferromagnetic chromium oxides containing fluorine and their preparation
US3074778A (en) * 1959-09-24 1963-01-22 Du Pont Process for producing ferromagnetic chromium oxide
US3078147A (en) * 1959-06-05 1963-02-19 Du Pont Ferromagnetic chromium oxide and preparation
US3081264A (en) * 1958-04-09 1963-03-12 Matake Kurokawa Method of preparing a magnetic recorder powder
US3278263A (en) * 1964-11-27 1966-10-11 Du Pont Ferromagnetic chromium dioxide and preparation thereof

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3068176A (en) * 1958-03-31 1962-12-11 Du Pont Ferromagnetic chromium oxides containing fluorine and their preparation
US3081264A (en) * 1958-04-09 1963-03-12 Matake Kurokawa Method of preparing a magnetic recorder powder
US3034988A (en) * 1958-08-22 1962-05-15 Du Pont Modified chromium oxide ferromagnetic compositions, their preparation and use
US3078147A (en) * 1959-06-05 1963-02-19 Du Pont Ferromagnetic chromium oxide and preparation
US3074778A (en) * 1959-09-24 1963-01-22 Du Pont Process for producing ferromagnetic chromium oxide
US3278263A (en) * 1964-11-27 1966-10-11 Du Pont Ferromagnetic chromium dioxide and preparation thereof

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