JPS55141712A - Acicular magnetic iron oxide and method for producing same - Google Patents

Acicular magnetic iron oxide and method for producing same

Info

Publication number
JPS55141712A
JPS55141712A JP4878680A JP4878680A JPS55141712A JP S55141712 A JPS55141712 A JP S55141712A JP 4878680 A JP4878680 A JP 4878680A JP 4878680 A JP4878680 A JP 4878680A JP S55141712 A JPS55141712 A JP S55141712A
Authority
JP
Japan
Prior art keywords
iron oxide
magnetic iron
producing same
acicular magnetic
acicular
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.)
Pending
Application number
JP4878680A
Other languages
English (en)
Inventor
Ruudorufu Peetaa
Shiyuteku Buerunaa
Zarunetsuki Buiruherumu
Ieeku Kurisutofu
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.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of JPS55141712A publication Critical patent/JPS55141712A/ja
Pending 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
    • 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
    • G11B5/70657—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 with a skin

Landscapes

  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
  • Compounds Of Iron (AREA)
  • Paints Or Removers (AREA)
JP4878680A 1979-04-23 1980-04-15 Acicular magnetic iron oxide and method for producing same Pending JPS55141712A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792916403 DE2916403A1 (de) 1979-04-23 1979-04-23 Nadelfoermiges magnetisches eisenoxid und verfahren zu seiner herstellung

Publications (1)

Publication Number Publication Date
JPS55141712A true JPS55141712A (en) 1980-11-05

Family

ID=6069041

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4878680A Pending JPS55141712A (en) 1979-04-23 1980-04-15 Acicular magnetic iron oxide and method for producing same

Country Status (4)

Country Link
US (1) US4259368A (ja)
EP (1) EP0018009B1 (ja)
JP (1) JPS55141712A (ja)
DE (2) DE2916403A1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819733A (ja) * 1981-07-28 1983-02-04 Toshiba Corp 磁気記録媒体及びその製造方法
JPS59138312A (ja) * 1983-01-28 1984-08-08 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄粉末の製造方法
JPS59147414A (ja) * 1983-02-10 1984-08-23 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄粉末の製造方法
JPS59159502A (ja) * 1983-03-02 1984-09-10 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄粉末の製造方法
JPH04252001A (ja) * 1991-01-10 1992-09-08 Titan Kogyo Kk 磁気記録用強磁性酸化鉄粉末の製造方法

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56109827A (en) * 1980-02-05 1981-08-31 Mitsui Toatsu Chem Inc Manufacture of iron compound particle for magnetic recording medium
JPS57105469A (en) * 1980-12-19 1982-06-30 Matsushita Electric Ind Co Ltd Magnetic ink for recording
US4388367A (en) * 1981-09-28 1983-06-14 Xerox Corporation Perpendicular magnetic recording medium and fabrication
EP0076462B2 (en) * 1981-10-01 1991-01-16 Agency Of Industrial Science And Technology Method of production of magnetic particles
DE3204547A1 (de) * 1982-02-10 1983-08-18 Basf Ag, 6700 Ludwigshafen Nadelfoermiges ferrimagnetisches eisenoxid und verfahren zu seiner herstellung
AU558199B2 (en) * 1982-09-16 1987-01-22 Ishihara Sangyo Kaisha Ltd. Production of magnetic powder
US5219554A (en) 1986-07-03 1993-06-15 Advanced Magnetics, Inc. Hydrated biodegradable superparamagnetic metal oxides
DE3633130A1 (de) * 1986-09-30 1988-03-31 Basf Ag Feinteilige, sphaerische, zweischichtige feststoffteilchen
DE3780903T2 (de) * 1986-10-17 1992-12-24 Toda Kogyo Corp Nadelfoermige magnetische eisenoxydteilchen, verfahren zu ihrer herstellung und solche teilchen verwendende magnetische aufzeichnungstraeger.
US4781981A (en) * 1986-12-19 1988-11-01 Toda Kogyo Corp. Plate-like magnetoplumbite ferrite particles for magnetic recording and process for producing the same
JP2784794B2 (ja) * 1989-04-20 1998-08-06 戸田工業 株式会社 磁性酸化鉄粒子粉末
KR920701998A (ko) * 1989-08-09 1992-08-12 미시마 마사요시 강자성 금속 입자 및 이의 제조방법
MY107614A (en) * 1990-09-26 1996-05-15 Ishihara Sangyo Kaisha Acicular ferromagnetic iron oxide particles and process for producing the same
JP3389935B2 (ja) * 1994-03-04 2003-03-24 戸田工業株式会社 針状コバルト被着型マグネタイト粒子粉末及びその製造法
PT108993A (pt) * 2015-11-30 2017-05-30 Bosch Termotecnologia Sa Cabo de alimentação de energia elétrica com indutor de modo comum integrado

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4122216A (en) * 1971-10-19 1978-10-24 Hitachi Maxell, Ltd. Ferro-magnetic acicular particles for recording medium and process for preparing the same
CA1021148A (en) 1972-09-07 1977-11-22 Irwin Gordon Cobalt and zinc ferrites and magnetic recording tape thereof
CA1030751A (en) * 1972-09-07 1978-05-09 Matsushita Electric Industrial Co., Ltd. MAGNETIC POWDER OF COBALT-SUBSTITUTED .gamma.-FERRIC OXIDE
DE2325925A1 (de) 1973-05-22 1974-12-12 Bayer Ag Verfahren zur herstellung von nadelfoermigen kobalthaltigen ferrimagnetischen eisenoxiden
JPS5236751B2 (ja) * 1973-08-07 1977-09-17
JPS5078599A (ja) * 1973-11-15 1975-06-26
JPS5138098A (ja) * 1974-09-25 1976-03-30 Fuji Photo Film Co Ltd
DE2625106C2 (de) * 1976-06-04 1982-03-11 Bayer Ag, 5090 Leverkusen Eisenoxidschwarz-Pigmente mit verbesserter Oxidationsbeständigkeit und Verfahren zu ihrer Herstellung
DE2705967C2 (de) * 1977-02-12 1990-01-04 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadelförmigem kobalthaltigem magnetischem Eisenoxid
JPS54107709A (en) * 1978-02-10 1979-08-23 Victor Co Of Japan Ltd Magnetic recording material

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5819733A (ja) * 1981-07-28 1983-02-04 Toshiba Corp 磁気記録媒体及びその製造方法
JPS59138312A (ja) * 1983-01-28 1984-08-08 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄粉末の製造方法
JPS59147414A (ja) * 1983-02-10 1984-08-23 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄粉末の製造方法
JPS59159502A (ja) * 1983-03-02 1984-09-10 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄粉末の製造方法
JPH04252001A (ja) * 1991-01-10 1992-09-08 Titan Kogyo Kk 磁気記録用強磁性酸化鉄粉末の製造方法

Also Published As

Publication number Publication date
DE3063654D1 (en) 1983-07-14
EP0018009B1 (de) 1983-06-08
EP0018009A1 (de) 1980-10-29
US4259368A (en) 1981-03-31
DE2916403A1 (de) 1980-11-06

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