DE69711503D1 - Beschichtete nadelförmige magnetische Eisenoxidteilchen - Google Patents

Beschichtete nadelförmige magnetische Eisenoxidteilchen

Info

Publication number
DE69711503D1
DE69711503D1 DE69711503T DE69711503T DE69711503D1 DE 69711503 D1 DE69711503 D1 DE 69711503D1 DE 69711503 T DE69711503 T DE 69711503T DE 69711503 T DE69711503 T DE 69711503T DE 69711503 D1 DE69711503 D1 DE 69711503D1
Authority
DE
Germany
Prior art keywords
iron oxide
oxide particles
magnetic iron
acicular magnetic
coated 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.)
Expired - Fee Related
Application number
DE69711503T
Other languages
English (en)
Other versions
DE69711503T2 (de
Inventor
Minoru Yamasaki
Katsunori Fujimoto
Toshitada Shigemura
Katsumi Yamashita
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.)
Toda Kogyo Corp
Original Assignee
Toda Kogyo Corp
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 Toda Kogyo Corp filed Critical Toda Kogyo Corp
Application granted granted Critical
Publication of DE69711503D1 publication Critical patent/DE69711503D1/de
Publication of DE69711503T2 publication Critical patent/DE69711503T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • H01F1/112—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 with a skin
    • 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
    • G11B5/712—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 surface treatment or coating of magnetic particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]
    • Y10T428/2991—Coated

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Dermatology (AREA)
  • General Health & Medical Sciences (AREA)
  • Compounds Of Iron (AREA)
  • Hard Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
DE69711503T 1996-06-24 1997-06-23 Beschichtete nadelförmige magnetische Eisenoxidteilchen Expired - Fee Related DE69711503T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18407896A JP3427871B2 (ja) 1996-06-24 1996-06-24 コバルト被着型針状磁性酸化鉄粒子粉末

Publications (2)

Publication Number Publication Date
DE69711503D1 true DE69711503D1 (de) 2002-05-08
DE69711503T2 DE69711503T2 (de) 2002-10-02

Family

ID=16147012

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69711503T Expired - Fee Related DE69711503T2 (de) 1996-06-24 1997-06-23 Beschichtete nadelförmige magnetische Eisenoxidteilchen

Country Status (5)

Country Link
US (1) US5968405A (de)
EP (1) EP0817178B1 (de)
JP (1) JP3427871B2 (de)
KR (1) KR100445590B1 (de)
DE (1) DE69711503T2 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITRM20010079A1 (it) * 2001-02-16 2002-08-16 Sigma Tau Ind Farmaceuti Amminoderivati della biotina e loro coniugati con chelanti macrociclici.
CN101970497B (zh) * 2007-04-04 2017-05-10 希格马托制药工业公司 抗‑EpCAM抗体及其用途
JP5316522B2 (ja) * 2010-11-30 2013-10-16 戸田工業株式会社 磁性粒子粉末
CN111229154A (zh) * 2020-02-18 2020-06-05 辽宁大学 一种MgFe2O4/Fe2O3复合物及其制备方法和应用
JP7367582B2 (ja) * 2020-03-23 2023-10-24 Tdk株式会社 フェライト焼結磁石

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55149137A (en) * 1979-05-11 1980-11-20 Tdk Corp High performance high coercive force powder and its manufacture
JPS5819733A (ja) * 1981-07-28 1983-02-04 Toshiba Corp 磁気記録媒体及びその製造方法
JPS5998503A (ja) * 1982-11-26 1984-06-06 Ishihara Sangyo Kaisha Ltd コバルト含有磁性酸化鉄
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

Also Published As

Publication number Publication date
DE69711503T2 (de) 2002-10-02
EP0817178B1 (de) 2002-04-03
JP3427871B2 (ja) 2003-07-22
EP0817178A1 (de) 1998-01-07
US5968405A (en) 1999-10-19
KR100445590B1 (ko) 2004-11-10
KR980005080A (ko) 1998-03-30
JPH107420A (ja) 1998-01-13

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee