DE69608374D1 - Magnetpulver, Sintermagnet, Verbundmagnet und magnetisches Aufzeichnungsmedium - Google Patents

Magnetpulver, Sintermagnet, Verbundmagnet und magnetisches Aufzeichnungsmedium

Info

Publication number
DE69608374D1
DE69608374D1 DE69608374T DE69608374T DE69608374D1 DE 69608374 D1 DE69608374 D1 DE 69608374D1 DE 69608374 T DE69608374 T DE 69608374T DE 69608374 T DE69608374 T DE 69608374T DE 69608374 D1 DE69608374 D1 DE 69608374D1
Authority
DE
Germany
Prior art keywords
magnet
recording medium
magnetic
magnetic recording
magnetic powder
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 - Lifetime
Application number
DE69608374T
Other languages
English (en)
Other versions
DE69608374T2 (de
DE69608374T3 (de
Inventor
Hitoshi Taguchi
Kenichiro Suwa
Taku Takeishi
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.)
TDK Corp
Original Assignee
TDK 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=26476274&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69608374(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by TDK Corp filed Critical TDK Corp
Publication of DE69608374D1 publication Critical patent/DE69608374D1/de
Publication of DE69608374T2 publication Critical patent/DE69608374T2/de
Application granted granted Critical
Publication of DE69608374T3 publication Critical patent/DE69608374T3/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2658—Other ferrites containing manganese or zinc, e.g. Mn-Zn ferrites
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
    • C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
    • C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
    • C04B35/2633—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing barium, strontium or calcium
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F10/00—Thin magnetic films, e.g. of one-domain structure
    • H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
    • H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
    • H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
    • H01F10/20—Ferrites
    • H01F10/205—Hexagonal ferrites

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Organic Chemistry (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Magnetic Ceramics (AREA)
  • Magnetic Record Carriers (AREA)
  • Thin Magnetic Films (AREA)
DE69608374T 1995-08-11 1996-08-09 Magnetpulver, Sintermagnet, Verbundmagnet und magnetisches Aufzeichnungsmedium Expired - Lifetime DE69608374T3 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP22718395 1995-08-11
JP22718395 1995-08-11
JP14500696 1996-05-15
JP8145006A JP2897871B2 (ja) 1995-08-11 1996-05-15 磁石粉末、焼結磁石、ボンディッド磁石および磁気記録媒体

Publications (3)

Publication Number Publication Date
DE69608374D1 true DE69608374D1 (de) 2000-06-21
DE69608374T2 DE69608374T2 (de) 2000-11-09
DE69608374T3 DE69608374T3 (de) 2004-04-15

Family

ID=26476274

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69608374T Expired - Lifetime DE69608374T3 (de) 1995-08-11 1996-08-09 Magnetpulver, Sintermagnet, Verbundmagnet und magnetisches Aufzeichnungsmedium

Country Status (5)

Country Link
US (1) US5846449A (de)
EP (1) EP0758786B2 (de)
JP (1) JP2897871B2 (de)
CN (1) CN1128455C (de)
DE (1) DE69608374T3 (de)

Families Citing this family (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5945028A (en) * 1992-04-24 1999-08-31 Tdk Corporation Hexagonal system ferrite particles and their production process
US5951937A (en) * 1996-12-03 1999-09-14 Tdk Corporation Preparation of oxide magnetic material
DE69824362T2 (de) * 1997-02-25 2005-06-16 Tdk Corp. Magnetisches Oxidmaterial, Ferritteilchen, gesinterter Magnet, Verbundmagnet, magnetischer Aufzeichnungsträger und Motor
JP4647731B2 (ja) * 1997-09-19 2011-03-09 Ｔｄｋ株式会社 磁石粉末、焼結磁石、それらの製造方法、ボンディッド磁石および磁気記録媒体
WO1999016086A1 (fr) * 1997-09-19 1999-04-01 Tdk Corporation Corps d'oxyde magnetique, particules de ferrite, aimant agglomere, aimant fritte, procede de fabrication de ces materiaux, et support d'enregistrement magnetique
CN103310934B (zh) 1997-09-19 2016-05-04 Tdk株式会社 磁体粉末、烧结磁体，其制造工艺、粘结磁体、马达和磁记录介质
CN1162873C (zh) 1997-12-25 2004-08-18 日立金属株式会社 铁氧体磁体
US5958284A (en) * 1997-12-29 1999-09-28 Hitachi Metals, Ltd. Ferrite magnet and method for producing same
EP1453070B1 (de) * 1998-01-23 2010-03-31 Hitachi Metals, Ltd. Verbundmagnet, Herstellungsverfahren dafür und Magnetrolle
JP4285797B2 (ja) * 1998-02-10 2009-06-24 Ｔｄｋ株式会社 磁石粉末、焼結磁石、ボンディッド磁石及びモータ
CN1658340A (zh) 1998-06-25 2005-08-24 Tdk株式会社 六角型铁氧体磁体
US6419847B1 (en) 1998-11-26 2002-07-16 Sumitomo Special Metals Co., Ltd. Ferrite magnet powder and magnet using said magnet powder, and method for preparing them
JP2001210508A (ja) * 1999-07-05 2001-08-03 Hitachi Metals Ltd アークセグメント磁石、リング磁石及び希土類焼結磁石の製造方法
MXPA01002383A (es) * 1999-07-07 2003-03-10 Tdk Corp Ferrita magnetica y metodo para hacerla.
JP3449322B2 (ja) * 1999-10-27 2003-09-22 株式会社村田製作所 複合磁性材料およびインダクタ素子
JP2001135512A (ja) 1999-11-08 2001-05-18 Sumitomo Special Metals Co Ltd フェライト磁石粉末および該磁石粉末を用いた磁石およびそれらの製造方法
JP4961068B2 (ja) * 1999-12-28 2012-06-27 戸田工業株式会社 ボンド磁石用ストロンチウムフェライト粒子粉末及び該ストロンチウムフェライト粒子粉末を用いたボンド磁石
JP4697366B2 (ja) * 2000-12-07 2011-06-08 戸田工業株式会社 ボンド磁石用ストロンチウムフェライト粒子粉末及び該ストロンチウムフェライト粒子粉末を用いたボンド磁石
JP4045410B2 (ja) * 2002-02-13 2008-02-13 戸田工業株式会社 軟磁性六方晶フェライト複合粒子粉末、該軟磁性六方晶フェライト複合粒子粉末を用いたグリーンシート並びに軟磁性六方晶フェライト焼結体
JP4576751B2 (ja) * 2001-05-24 2010-11-10 日立金属株式会社 酸化物磁性材料
FR2831317B1 (fr) * 2001-10-19 2004-10-15 Ugimag Sa Aimants de type ferrite economiques et a proprietes ameliorees
KR100359547B1 (en) * 2001-12-27 2002-10-31 Ssangyong Materials Corp Magnetoplumbite type ferrite magnet and fabricating method thereof
CN1218330C (zh) * 2002-05-31 2005-09-07 三洋电机株式会社 氧化物磁性材料的制造方法和氧化物磁性材料
FR2854981B1 (fr) * 2003-05-16 2014-05-23 Thales Sa Materiau ferrite pour aimant permanent et procede de fabrication
JP5578777B2 (ja) * 2007-09-28 2014-08-27 Ｄｏｗａエレクトロニクス株式会社 ボンド磁石用フェライト粉末およびその製造方法、並びに、これを用いたボンド磁石
US7964072B2 (en) * 2008-10-03 2011-06-21 Delphi Technologies, Inc. Sensor material and gas sensor element and gas sensor derived therefrom
CN101894648B (zh) * 2010-07-02 2012-10-31 北矿磁材科技股份有限公司 粘结铁氧体磁粉及其制备方法及粘结磁体
JP5804370B2 (ja) * 2010-09-14 2015-11-04 日立金属株式会社 酸化物磁性材料の製造方法
CN103209773B (zh) * 2010-11-15 2016-06-08 代表阿拉巴马大学的阿拉巴马大学理事会 用于无线通信设备中的m型六角铁氧体天线
JP5905205B2 (ja) * 2011-03-31 2016-04-20 Ｄｏｗａエレクトロニクス株式会社 金属磁性粉末およびその製造方法
CN102801270B (zh) * 2011-05-26 2017-12-12 德昌电机(深圳)有限公司 永磁电机及具有该电机的厨房电器
JP6152854B2 (ja) 2012-09-28 2017-06-28 日立金属株式会社 フェライト焼結磁石及びその製造方法
JP6488675B2 (ja) * 2013-12-06 2019-03-27 Tdk株式会社 Ｓｒフェライト焼結磁石、モータ及び発電機
JP6596828B2 (ja) * 2014-03-07 2019-10-30 Ｔｄｋ株式会社 フェライト焼結磁石及びそれを備えるモータ
JP6488892B2 (ja) * 2015-06-05 2019-03-27 Tdk株式会社 Ｓｒフェライト焼結磁石、モータ及び発電機
KR102277414B1 (ko) 2015-10-16 2021-07-14 유니온머티리얼 주식회사 페라이트 자성재료 및 페라이트 소결자석
KR102588231B1 (ko) * 2016-06-20 2023-10-13 유니온머티리얼 주식회사 페라이트 자성재료 및 페라이트 소결자석
JP6791267B2 (ja) * 2016-12-22 2020-11-25 Tdk株式会社 フェライト焼結磁石、フェライト粒子、ボンド磁石、モータ及び発電機
CN107967975A (zh) * 2017-12-13 2018-04-27 江西伟普科技有限公司 一种高比重耐腐蚀的环保型注塑粘结磁性材料的制备方法
JP7338395B2 (ja) * 2019-10-18 2023-09-05 Tdk株式会社 フェライト焼結磁石及びこれを備える回転電気機械
WO2022038531A1 (en) * 2020-08-19 2022-02-24 Mahindra Cie Automotive Ltd. A permanent magnetic material and a method for its preparation
CN112299836A (zh) * 2020-11-25 2021-02-02 南通冠优达磁业有限公司 一种高频低损耗软磁铁氧体材料及制备方法
JP2022151625A (ja) 2021-03-24 2022-10-07 Tdk株式会社 フェライト焼結磁石、フェライト粒子、ボンド磁石、及び、回転電気機械

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4440713A (en) * 1982-09-30 1984-04-03 International Business Machines Corp. Process for making fine magnetic ferrite powder and dense ferrite blocks
JPS62252325A (ja) * 1986-04-25 1987-11-04 Fuji Elelctrochem Co Ltd 六方晶系フエライト微粉末の製造方法
DE3726667A1 (de) * 1987-08-11 1989-02-23 Bayer Ag Feinteilige magnetische borhaltige hexaferritpigmente, verfahren zu ihrer herstellung sowie deren verwendung
US4855205A (en) * 1988-08-05 1989-08-08 Eastman Kodak Company Interdispersed two-phase ferrite composite and carrier therefrom
DE3842015A1 (de) * 1988-12-14 1990-07-05 Bayer Ag Verfahren zur herstellung feinteiliger magnetischer hexaferrite durch spruehtrocknen von bariumsalzen mit eisenoxiden sowie die verwendung so erhaltener hexaferrite
JP3256377B2 (ja) * 1993-08-12 2002-02-12 日立金属株式会社 フェライト磁石の製造方法

Also Published As

Publication number Publication date
DE69608374T2 (de) 2000-11-09
EP0758786B2 (de) 2003-08-27
DE69608374T3 (de) 2004-04-15
JPH09115715A (ja) 1997-05-02
US5846449A (en) 1998-12-08
CN1150315A (zh) 1997-05-21
CN1128455C (zh) 2003-11-19
JP2897871B2 (ja) 1999-05-31
EP0758786B1 (de) 2000-05-17
EP0758786A1 (de) 1997-02-19

Similar Documents

Publication Publication Date Title
DE69608374D1 (de) Magnetpulver, Sintermagnet, Verbundmagnet und magnetisches Aufzeichnungsmedium
DE69824362D1 (de) Magnetisches Oxidmaterial, Ferritteilchen, gesinterter Magnet, Verbundmagnet, magnetischer Aufzeichnungsträger und Motor
EP0940824A4 (de) Magnetpuder, sintermagnet, ihrer herstellungsverfahren, verbundmagnet, motor, und magnetisches aufzeichnungsmedium
DE69834761D1 (de) Magnetisches Aufzeichnungsmedium
DE69834872D1 (de) Aufzeichnungsmedium und Menüsteuerung
FI971666A (fi) Magneettipartikkelien siirtoväline
EP0927992A4 (de) Magnetischer aufzeichnungsträger und magnetisches aufnahme-wiedergabegerät mit diesem
DE69227425D1 (de) Magnetisches Aufzeichnungsmedium und Herstellungsverfahren
DE69707981D1 (de) Plattenförmiges magnetisches Aufzeichnungsmedium
DE69020032D1 (de) Magnetisches Aufzeichnungsmedium und Herstellungsverfahren desselben.
DE69608489D1 (de) Magnetisches Aufzeichnungsmedium
GB2338336B (en) Magnetic recording medium
DE69836238D1 (de) Magnetisches Aufzeichnungsmedium
DE69506672D1 (de) Magnetisches Aufzeichnungsmedium
DE69817697D1 (de) Magnetisches Aufzeichnungsmedium
DE69510017D1 (de) Magnetisches Aufzeichnungsmedium
DE69503282D1 (de) Magnetisches Aufzeichnungsmedium
EP1195748A4 (de) Magnetaufzeichnungsfilm und basisfilm dafür
ITRM980187A0 (it) Supporto di registrazione magnetico
DE69512473D1 (de) Magnetisches Aufzeichnungsmedium
DE69806302D1 (de) Magnetisches Aufzeichnungsmedium
GB2295159B (en) Magnetic recording medium
DE69813100D1 (de) Magnetisches Aufzeichnungsmedium
DE69509004D1 (de) Magnetischer Aufzeichnungsmedium
DE69709477D1 (de) Magnetische Aufzeichnungsmedium

Legal Events

Date Code Title Description
8363 Opposition against the patent
8366 Restricted maintained after opposition proceedings