JPS60151228A - コバルト含有、等方性の磁性酸化鉄の製法 - Google Patents

コバルト含有、等方性の磁性酸化鉄の製法

Info

Publication number
JPS60151228A
JPS60151228A JP59264670A JP26467084A JPS60151228A JP S60151228 A JPS60151228 A JP S60151228A JP 59264670 A JP59264670 A JP 59264670A JP 26467084 A JP26467084 A JP 26467084A JP S60151228 A JPS60151228 A JP S60151228A
Authority
JP
Japan
Prior art keywords
ions
suspension
cobalt
magnetic
sample
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.)
Granted
Application number
JP59264670A
Other languages
English (en)
Japanese (ja)
Other versions
JPH0567572B2 (enExample
Inventor
ヴエルナー、シュテク
ヴイルヘルム、ザルネキ
ヘルムート、ヤクシュ
ラスツロ、マロズイ
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 JPS60151228A publication Critical patent/JPS60151228A/ja
Publication of JPH0567572B2 publication Critical patent/JPH0567572B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
    • H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
    • H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
    • H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
    • H01F1/10—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure
    • H01F1/11—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials non-metallic substances, e.g. ferrites, e.g. [(Ba,Sr)O(Fe2O3)6] ferrites with hexagonal structure in the form of particles
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/02—Oxides; Hydroxides
    • C01G49/06—Ferric oxide [Fe2O3]
    • 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
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2002/00—Crystal-structural characteristics
    • C01P2002/50—Solid solutions
    • C01P2002/52—Solid solutions containing elements as dopants
    • C01P2002/54—Solid solutions containing elements as dopants one element only
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2006/00—Physical properties of inorganic compounds
    • C01P2006/42—Magnetic properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
JP59264670A 1983-12-16 1984-12-17 コバルト含有、等方性の磁性酸化鉄の製法 Granted JPS60151228A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3345532.5 1983-12-16
DE19833345532 DE3345532A1 (de) 1983-12-16 1983-12-16 Verfahren zur herstellung kobalthaltiger, isotroper magnetischer eisenoxide

Publications (2)

Publication Number Publication Date
JPS60151228A true JPS60151228A (ja) 1985-08-09
JPH0567572B2 JPH0567572B2 (enExample) 1993-09-27

Family

ID=6217116

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59264670A Granted JPS60151228A (ja) 1983-12-16 1984-12-17 コバルト含有、等方性の磁性酸化鉄の製法

Country Status (3)

Country Link
EP (1) EP0146100B1 (enExample)
JP (1) JPS60151228A (enExample)
DE (2) DE3345532A1 (enExample)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02263407A (ja) * 1989-04-04 1990-10-26 Showa Denko Kk 磁気記録用磁性酸化鉄粉の連続製造法と装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE790376A (fr) * 1971-10-27 1973-02-15 Ampex Particules d'oxyde de fer magnétique dopé au cobalt
DE2325925A1 (de) * 1973-05-22 1974-12-12 Bayer Ag Verfahren zur herstellung von nadelfoermigen kobalthaltigen ferrimagnetischen eisenoxiden
DE2508155A1 (de) * 1974-02-25 1975-08-28 Montedison Spa Verfahren zur herstellung von magnetit mit gleichachsiger morphologie

Also Published As

Publication number Publication date
EP0146100A3 (en) 1987-06-03
DE3345532A1 (de) 1985-06-27
DE3472727D1 (en) 1988-08-18
EP0146100B1 (de) 1988-07-13
JPH0567572B2 (enExample) 1993-09-27
EP0146100A2 (de) 1985-06-26

Similar Documents

Publication Publication Date Title
US5466306A (en) Spindle-shaped magnetic iron based alloy particles
US4178171A (en) Manufacture of acicular ferromagnetic iron particles
US3897354A (en) Cobalt-containing acicular ferrimagnetic iron oxide of improved remanence stability
JPS5853688B2 (ja) Ｆｅ−Ｍｇを主成分とする針状晶合金磁性粒子粉末の製造法
JP5711086B2 (ja) 磁気記録用磁性粉およびその製造方法、ならびに磁気記録媒体
US4650597A (en) Preparation of finely divided isotropic cobalt-containing ferrite powder
US4437881A (en) Acicular ferromagnetic alloy particles and process for producing said particles
US4755315A (en) Preparation of cobalt-containing isotropic magnetic iron oxides
KR100445590B1 (ko) 코발트 피복된 침상의 자성 산화철 입자
US5047161A (en) Preparation of isometric cobalt- and titanium-containing magnetic iron oxides
JPS6197805A (ja) フエリ磁性粒子及びその製法
JPH0567572B2 (enExample)
US5989516A (en) Spindle-shaped geothite particles
JPH0517171B2 (enExample)
JP3512053B2 (ja) 磁気記録媒体の非磁性下地層用レピドクロサイト粒子粉末、磁気記録媒体の基体及び磁気記録媒体
JP2910813B2 (ja) 非磁性黒褐色含水酸化鉄粒子粉末及びその製造法並びに該粉末を用いた磁気記録媒体用下地層
JPS62158801A (ja) 紡錘形状を呈した鉄を主成分とする金属磁性粒子粉末及びその製造法
JPH0120201B2 (enExample)
JPH07126704A (ja) 紡錘状を呈した鉄を主成分とする金属磁性粒子粉末及びその製造法
JPH06263449A (ja) 非磁性黒褐色含水酸化鉄粒子粉末及びその製造法並びに該粉末を用いた磁気記録媒体用下地層
JPH0532421A (ja) 針状磁性酸化鉄粒子粉末の製造法
JPS59169937A (ja) 磁性粉末の製造方法
JPS638224A (ja) 磁気記録用強磁性粉末の製造方法
JPH0774081B2 (ja) 紡錘型を呈した磁性酸化鉄粒子粉末の製造法
JPH06124827A (ja) コバルト被着型磁性酸化鉄粒子粉末の製造法