FR1071068A - Process for improving the magnetic properties of fe2o3 gamma - Google Patents

Process for improving the magnetic properties of fe2o3 gamma

Info

Publication number
FR1071068A
FR1071068A FR1071068DA FR1071068A FR 1071068 A FR1071068 A FR 1071068A FR 1071068D A FR1071068D A FR 1071068DA FR 1071068 A FR1071068 A FR 1071068A
Authority
FR
France
Prior art keywords
fe2o3
gamma
improving
magnetic properties
properties
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.)
ANORGANA U S ADMINISTRATION
Original Assignee
ANORGANA U S ADMINISTRATION
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 ANORGANA U S ADMINISTRATION filed Critical ANORGANA U S ADMINISTRATION
Application granted granted Critical
Publication of FR1071068A publication Critical patent/FR1071068A/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
    • G11B5/70642—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 iron oxides
    • G11B5/70652—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 iron oxides gamma - Fe2 O3
    • G11B5/70668—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 iron oxides gamma - Fe2 O3 containing a dopant
    • G11B5/70673—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 iron oxides gamma - Fe2 O3 containing a dopant containing Co
FR1071068D 1951-08-29 1952-08-04 Process for improving the magnetic properties of fe2o3 gamma Expired FR1071068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1071068X 1951-08-29

Publications (1)

Publication Number Publication Date
FR1071068A true FR1071068A (en) 1954-08-24

Family

ID=7719776

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1071068D Expired FR1071068A (en) 1951-08-29 1952-08-04 Process for improving the magnetic properties of fe2o3 gamma

Country Status (1)

Country Link
FR (1) FR1071068A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3015788A (en) * 1956-04-13 1962-01-02 Raytheon Co Microwave device
DE1131337B (en) * 1955-03-28 1962-06-14 Philips Nv Process for the production of magnetic cores based on cobalt-iron (ó�) ferrite, which have an almost rectangular hysteresis loop
US3043776A (en) * 1957-04-18 1962-07-10 Philips Corp Ferromagnetic oxidic material
US3078234A (en) * 1958-04-24 1963-02-19 Jr Charles M Davis Magnetostrictive ferrite

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1131337B (en) * 1955-03-28 1962-06-14 Philips Nv Process for the production of magnetic cores based on cobalt-iron (ó�) ferrite, which have an almost rectangular hysteresis loop
US3015788A (en) * 1956-04-13 1962-01-02 Raytheon Co Microwave device
US3043776A (en) * 1957-04-18 1962-07-10 Philips Corp Ferromagnetic oxidic material
US3078234A (en) * 1958-04-24 1963-02-19 Jr Charles M Davis Magnetostrictive ferrite

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