JPH0134935B2 - - Google Patents

Info

Publication number
JPH0134935B2
JPH0134935B2 JP54063158A JP6315879A JPH0134935B2 JP H0134935 B2 JPH0134935 B2 JP H0134935B2 JP 54063158 A JP54063158 A JP 54063158A JP 6315879 A JP6315879 A JP 6315879A JP H0134935 B2 JPH0134935 B2 JP H0134935B2
Authority
JP
Japan
Prior art keywords
particles
iron
ferrous
magnetic
ferric
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
JP54063158A
Other languages
English (en)
Japanese (ja)
Other versions
JPS54152699A (en
Inventor
Kurisutofuaamaakotsuto Gii
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.)
MAGUNOTSUKUSU Inc DEIIII
Original Assignee
MAGUNOTSUKUSU Inc DEIIII
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 MAGUNOTSUKUSU Inc DEIIII filed Critical MAGUNOTSUKUSU Inc DEIIII
Publication of JPS54152699A publication Critical patent/JPS54152699A/ja
Publication of JPH0134935B2 publication Critical patent/JPH0134935B2/ja
Granted 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
    • G11B5/70694—Non-stoechiometric ferro-ferrioxydes, e.g. berthollide

Landscapes

  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Magnetic Record Carriers (AREA)
  • Paints Or Removers (AREA)
JP6315879A 1978-05-22 1979-05-22 Magnetic needleelike nonnstoichiometric ferrous and ferric oxide particle and its manufacture Granted JPS54152699A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/908,348 US4209412A (en) 1978-05-22 1978-05-22 Process for producing nonstoichiometric ferroso-ferric oxides

Publications (2)

Publication Number Publication Date
JPS54152699A JPS54152699A (en) 1979-12-01
JPH0134935B2 true JPH0134935B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1989-07-21

Family

ID=25425637

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6315879A Granted JPS54152699A (en) 1978-05-22 1979-05-22 Magnetic needleelike nonnstoichiometric ferrous and ferric oxide particle and its manufacture

Country Status (6)

Country Link
US (1) US4209412A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS54152699A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2920733A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2426955B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB2021089B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NL (1) NL190112C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2935444A1 (de) * 1979-09-01 1981-03-19 Basf Ag, 6700 Ludwigshafen Verfahren zur herstellung von nadelfoermigen ferrimagnetischem eisenoxid
JPS5677926A (en) * 1979-11-28 1981-06-26 Tdk Corp Magnetic recording medium using cobalt adhesion type iron oxide
DE3637805A1 (de) * 1985-11-06 1987-07-16 Tdk Corp Magnetischer aufzeichnungstraeger
JP2582764B2 (ja) * 1986-02-05 1997-02-19 バスフ アクチェン ゲゼルシャフト 本質的に鉄から成る針状強磁性金属粉末の製造方法
US5069216A (en) * 1986-07-03 1991-12-03 Advanced Magnetics Inc. Silanized biodegradable super paramagnetic metal oxides as contrast agents for imaging the gastrointestinal tract
US5219554A (en) * 1986-07-03 1993-06-15 Advanced Magnetics, Inc. Hydrated biodegradable superparamagnetic metal oxides
MY107614A (en) * 1990-09-26 1996-05-15 Ishihara Sangyo Kaisha Acicular ferromagnetic iron oxide particles and process for producing the same
DE69418472D1 (de) * 1993-11-01 1999-06-17 Minnesota Mining & Mfg Verfahren zur herstellung von goethit
US5814164A (en) * 1994-11-09 1998-09-29 American Scientific Materials Technologies L.P. Thin-walled, monolithic iron oxide structures made from steels, and methods for manufacturing such structures
US6461562B1 (en) 1999-02-17 2002-10-08 American Scientific Materials Technologies, Lp Methods of making sintered metal oxide articles
US6962685B2 (en) * 2002-04-17 2005-11-08 International Business Machines Corporation Synthesis of magnetite nanoparticles and the process of forming Fe-based nanomaterials
DE10331439B3 (de) * 2003-07-10 2005-02-03 Micromod Partikeltechnologie Gmbh Magnetische Nanopartikel mit verbesserten Magneteigenschaften
CN105073904B (zh) * 2013-03-29 2017-04-26 户田工业株式会社 耐热性黄色含水氧化铁颜料的制造方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573980A (en) * 1968-02-19 1971-04-06 Minnesota Mining & Mfg Method of making magnetic particles and recording tape
JPS5242363B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1973-03-20 1977-10-24
US3931025A (en) * 1973-09-21 1976-01-06 Bayer Aktiengesellschaft Magnetic iron oxides with improved orientability and a process for their production
JPS5820125B2 (ja) * 1974-09-20 1983-04-21 富士写真フイルム株式会社 磁気記録体
DE2507420A1 (de) 1975-02-21 1976-08-26 Bayer Ag Remanenzstabilisierte hochkoerzitive cobalthaltige magnetische eisenoxide
JPS608606B2 (ja) * 1975-07-02 1985-03-04 富士写真フイルム株式会社 強磁性粉末の製法
DE2625106C2 (de) * 1976-06-04 1982-03-11 Bayer Ag, 5090 Leverkusen Eisenoxidschwarz-Pigmente mit verbesserter Oxidationsbeständigkeit und Verfahren zu ihrer Herstellung
DE2639250C2 (de) * 1976-09-01 1985-12-12 Basf Ag, 6700 Ludwigshafen Verfahren zur Herstellung von nadelförmigem, kobaltdotiertem magnetischem Eisenoxid
US4053325A (en) * 1976-09-14 1977-10-11 Pfizer Inc. Heat stable iron oxides

Also Published As

Publication number Publication date
GB2021089B (en) 1982-06-30
FR2426955B1 (fr) 1988-07-01
DE2920733A1 (de) 1979-11-29
US4209412A (en) 1980-06-24
NL7903960A (nl) 1979-11-26
GB2021089A (en) 1979-11-28
NL190112C (nl) 1993-11-01
NL190112B (nl) 1993-06-01
JPS54152699A (en) 1979-12-01
DE2920733C2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1990-09-06
FR2426955A1 (fr) 1979-12-21

Similar Documents

Publication Publication Date Title
JPS6113362B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
US4259368A (en) Manufacture of acicular magnetic iron oxide
US4287233A (en) Manufacture of acicular cobalt-containing magnetic iron oxide
JPH0134935B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
US4296149A (en) Manufacture of acicular cobalt-containing magnetic iron oxide
US4406694A (en) Process for producing acicular ferromagnetic alloy particles and acicular ferromagnetic alloy particles obtained by the said process
JPS62183025A (ja) 磁気的信号記録用テ−プ
US4188302A (en) Manufacture of acicular cobalt-modified magnetic iron oxide
US4551260A (en) Wet process of preparing fine particles of ferrite of magnetoplumbite structure
US4059716A (en) Manufacture of gamma-iron(III) oxide
EP0148634B1 (en) Ferromagnetic alloy particles for magnetic recording media and process for their manufacture
KR890001971B1 (ko) 코발트함유 자성산화철 분말의 제조방법
US4876022A (en) Method for preparing ferromagnetic iron oxide particles
US4713261A (en) Method for preparing ferromagnetic iron oxide particles
KR890003881B1 (ko) 코발트 및 제 1 철 함유 강자성 산화철의 제조방법
JPS6114642B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
KR0169491B1 (ko) 침상의 강자성 산화철분말, 침상의 자성 산화철분말 및, 이들의 제조방법
JPH08217453A (ja) リチウムフェライト粉末の製造方法並びにその粉末からなる耐熱性黄色系顔料及び磁性材料
GB2109780A (en) Production of cobalt-containing magnetic iron oxide
JPS6122604A (ja) 磁性金属粉末およびその製造方法
EP0583621B1 (en) Process for producing acicular gamma iron (III) oxyhydroxide particles
KR100241694B1 (ko) 강자성 산화철 분말 및 그 제조방법
KR830000289B1 (ko) 자성산화철 입자의 제조방법
JPS6149252B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JPS62108736A (ja) 強磁性粉末の製造方法