AU527241B2 - Production of ferrimagnetic iron oxide - Google Patents

Production of ferrimagnetic iron oxide

Info

Publication number
AU527241B2
AU527241B2 AU43339/79A AU4333979A AU527241B2 AU 527241 B2 AU527241 B2 AU 527241B2 AU 43339/79 A AU43339/79 A AU 43339/79A AU 4333979 A AU4333979 A AU 4333979A AU 527241 B2 AU527241 B2 AU 527241B2
Authority
AU
Australia
Prior art keywords
production
iron oxide
ferrimagnetic iron
ferrimagnetic
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.)
Ceased
Application number
AU43339/79A
Other versions
AU4333979A (en
Inventor
Gunter Buxbaum
Volker Hahnkamm
Helmut Printzen
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of AU4333979A publication Critical patent/AU4333979A/en
Application granted granted Critical
Publication of AU527241B2 publication Critical patent/AU527241B2/en
Anticipated expiration legal-status Critical
Ceased 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
    • G11B5/70678—Ferrites
    • G11B5/70684—Ferro-ferrioxydes
    • G11B5/70689—Magnetite
AU43339/79A 1978-01-13 1979-01-12 Production of ferrimagnetic iron oxide Ceased AU527241B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2801395A DE2801395C2 (en) 1978-01-13 1978-01-13 Thermally stabilized ferrimagnetic iron oxide
DE28013958 1978-01-13

Publications (2)

Publication Number Publication Date
AU4333979A AU4333979A (en) 1979-07-19
AU527241B2 true AU527241B2 (en) 1983-02-24

Family

ID=6029463

Family Applications (1)

Application Number Title Priority Date Filing Date
AU43339/79A Ceased AU527241B2 (en) 1978-01-13 1979-01-12 Production of ferrimagnetic iron oxide

Country Status (6)

Country Link
EP (1) EP0003100B1 (en)
JP (2) JPS54101797A (en)
AU (1) AU527241B2 (en)
CA (1) CA1143143A (en)
DE (2) DE2801395C2 (en)
PL (1) PL123345B1 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2801452C2 (en) * 1978-01-13 1985-03-28 Agfa-Gevaert Ag, 5090 Leverkusen Magnetic recording material
DE2903593C3 (en) * 1979-01-31 1982-05-06 Bayer Ag, 5090 Leverkusen Cobalt-doped ferrimagnetic iron oxides and processes for their production
DE2909480A1 (en) * 1979-03-10 1980-09-11 Bayer Ag FERROMAGNETIC METAL PIGMENT MADE OF IRON AND METHOD FOR THE PRODUCTION THEREOF
DE2935444A1 (en) * 1979-09-01 1981-03-19 Basf Ag, 6700 Ludwigshafen METHOD FOR PRODUCING NEEDLE SHAPED FERRIMAGNETIC IRON OXIDE
JPS56114833A (en) * 1980-02-08 1981-09-09 Mitsui Toatsu Chem Inc Production of fine particle of iron compound for magnetic recording
DE3029203A1 (en) * 1980-08-01 1982-04-01 Basf Ag, 6700 Ludwigshafen NEEDLE-SHAPED MAGNETIC IRON OXIDE AND METHOD FOR THE PRODUCTION THEREOF
JPS57200230A (en) * 1981-06-05 1982-12-08 Mitsubishi Metal Corp Ultra-fine powder of black ferrosoferric oxide and its preparation
JPS5819733A (en) * 1981-07-28 1983-02-04 Toshiba Corp Magnetic recording medium and its manufacture
EP0123318B1 (en) * 1983-04-25 1988-03-09 Daikin Kogyo Co., Ltd. Acicular particulate material containing iron carbide
US5202043A (en) * 1985-01-09 1993-04-13 Bayer Aktiengesellschaft Process for the preparation of isometric magnetic iron oxide
JP2582764B2 (en) * 1986-02-05 1997-02-19 バスフ アクチェン ゲゼルシャフト Method for producing acicular ferromagnetic metal powder consisting essentially of iron
CN114733455B (en) * 2022-04-15 2023-02-14 北京田园奥瑞生物科技有限公司 Method for rapidly parting mammal sperms by utilizing biologically modified beta-cyclodextrin nano magnetic particles

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1392196A (en) * 1971-03-17 1975-04-30 Pfizer Synthetic gamma ferric oxide
BE794292A (en) * 1972-01-21 1973-07-19 Bayer Ag PROCESS FOR PREPARING FINE-DIVIDED ACICULAR MAGNETIC IRON OXIDES
US3931025A (en) * 1973-09-21 1976-01-06 Bayer Aktiengesellschaft Magnetic iron oxides with improved orientability and a process for their production
GB1482157A (en) * 1974-05-06 1977-08-10 Pfizer Cobalt acicular gamma ferric oxide
DE2507420A1 (en) * 1975-02-21 1976-08-26 Bayer Ag Cobalt modified ferric oxide - with additions of phosphates or oxides of transition metals, shows reduced remanence less and good stability of coercivity
JPS6350289A (en) * 1986-08-20 1988-03-03 Victor Co Of Japan Ltd Color solid-state image pickup device

Also Published As

Publication number Publication date
DE2801395A1 (en) 1979-07-19
CA1143143A (en) 1983-03-22
JPS6350289B2 (en) 1988-10-07
EP0003100A3 (en) 1979-08-22
DE2801395C2 (en) 1982-04-22
JPS54101797A (en) 1979-08-10
EP0003100A2 (en) 1979-07-25
AU4333979A (en) 1979-07-19
EP0003100B1 (en) 1981-08-26
JPH02229723A (en) 1990-09-12
PL212742A1 (en) 1979-11-05
DE2960663D1 (en) 1981-11-19
PL123345B1 (en) 1982-10-30

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