JP6787840B2 - 磁気記録用六方晶ストロンチウムフェライト粉末および磁気記録媒体 - Google Patents

磁気記録用六方晶ストロンチウムフェライト粉末および磁気記録媒体 Download PDF

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Publication number
JP6787840B2
JP6787840B2 JP2017116499A JP2017116499A JP6787840B2 JP 6787840 B2 JP6787840 B2 JP 6787840B2 JP 2017116499 A JP2017116499 A JP 2017116499A JP 2017116499 A JP2017116499 A JP 2017116499A JP 6787840 B2 JP6787840 B2 JP 6787840B2
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Japan
Prior art keywords
strontium ferrite
hexagonal strontium
ferrite powder
magnetic
magnetic recording
Prior art date
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JP2017116499A
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English (en)
Japanese (ja)
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JP2019003715A5 (enExample
JP2019003715A (ja
Inventor
直井　憲次
憲次 直井
白田　雅史
雅史 白田
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Fujifilm Corp
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Fujifilm 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 Fujifilm Corp filed Critical Fujifilm Corp
Priority to JP2017116499A priority Critical patent/JP6787840B2/ja
Priority to CN201810611324.7A priority patent/CN109087769B/zh
Priority to US16/008,147 priority patent/US11244701B2/en
Publication of JP2019003715A publication Critical patent/JP2019003715A/ja
Publication of JP2019003715A5 publication Critical patent/JP2019003715A5/ja
Application granted granted Critical
Publication of JP6787840B2 publication Critical patent/JP6787840B2/ja
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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
    • C01G49/0018—Mixed oxides or hydroxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C01G49/0036—Mixed oxides or hydroxides containing one alkaline earth metal, magnesium or lead
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G49/00—Compounds of iron
    • C01G49/0018—Mixed oxides or hydroxides
    • C01G49/0054—Mixed oxides or hydroxides containing one rare earth metal, yttrium or scandium
    • 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
    • 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
    • G11B5/714—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 dimension of the magnetic particles
    • 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
    • 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
    • C01P2006/90—Other properties not specified above
    • 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
    • G11B5/708—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 addition of non-magnetic particles to the layer
    • G11B5/7085—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 addition of non-magnetic particles to the layer non-magnetic abrasive particles

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Record Carriers (AREA)
  • Hard Magnetic Materials (AREA)
  • Compounds Of Iron (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
JP2017116499A 2017-06-14 2017-06-14 磁気記録用六方晶ストロンチウムフェライト粉末および磁気記録媒体 Active JP6787840B2 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2017116499A JP6787840B2 (ja) 2017-06-14 2017-06-14 磁気記録用六方晶ストロンチウムフェライト粉末および磁気記録媒体
CN201810611324.7A CN109087769B (zh) 2017-06-14 2018-06-14 磁记录用六方晶锶铁氧体粉末及磁记录介质
US16/008,147 US11244701B2 (en) 2017-06-14 2018-06-14 Hexagonal strontium ferrite powder for magnetic recording and magnetic recording medium

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017116499A JP6787840B2 (ja) 2017-06-14 2017-06-14 磁気記録用六方晶ストロンチウムフェライト粉末および磁気記録媒体

Publications (3)

Publication Number Publication Date
JP2019003715A JP2019003715A (ja) 2019-01-10
JP2019003715A5 JP2019003715A5 (enExample) 2019-03-22
JP6787840B2 true JP6787840B2 (ja) 2020-11-18

Family

ID=64658173

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017116499A Active JP6787840B2 (ja) 2017-06-14 2017-06-14 磁気記録用六方晶ストロンチウムフェライト粉末および磁気記録媒体

Country Status (3)

Country Link
US (1) US11244701B2 (enExample)
JP (1) JP6787840B2 (enExample)
CN (1) CN109087769B (enExample)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7126267B2 (ja) * 2017-03-31 2022-08-26 パウダーテック株式会社 フェライト粉末、樹脂組成物および成形体
JP6754744B2 (ja) * 2017-09-28 2020-09-16 富士フイルム株式会社 マイクロ波アシスト記録用磁気記録媒体、磁気記録装置および磁気記録媒体の製造方法
JP7077241B2 (ja) 2019-01-11 2022-05-30 富士フイルム株式会社 六方晶ストロンチウムフェライト粉末、磁気記録媒体および磁気記録再生装置
JP7105202B2 (ja) 2019-01-16 2022-07-22 富士フイルム株式会社 マイクロ波アシスト記録用磁気記録媒体、磁気記録装置、および磁気記録媒体の製造方法
JP6985315B2 (ja) * 2019-02-28 2021-12-22 富士フイルム株式会社 磁気テープ、磁気テープカートリッジおよび磁気記録再生装置
JP2021028858A (ja) * 2019-08-09 2021-02-25 富士フイルム株式会社 磁気記録媒体および磁気記録再生装置
CN116282188B (zh) * 2023-03-23 2024-09-06 中国科学院赣江创新研究院 一种钕掺杂锶铁氧体吸波材料及其制备方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003059032A (ja) * 2001-08-20 2003-02-28 Fuji Photo Film Co Ltd 六方晶系フェライト粉末及びそれを含む磁気記録媒体
JP2010100489A (ja) * 2008-10-24 2010-05-06 Tdk Corp フェライト粒子、フェライト粉末及び磁気記録媒体
JP5855832B2 (ja) 2010-01-29 2016-02-09 Ｄｏｗａエレクトロニクス株式会社 磁気記録用六方晶フェライト磁性粉末及び該粉末を用いた磁気記録媒体
JP5711086B2 (ja) 2010-09-30 2015-04-30 富士フイルム株式会社 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
JP5645865B2 (ja) * 2012-03-30 2014-12-24 富士フイルム株式会社 六方晶ストロンチウムフェライト磁性粉末およびその製造方法、ならびに磁気記録媒体およびその製造方法
WO2014208731A1 (ja) * 2013-06-28 2014-12-31 富士フイルム株式会社 磁気記録用六方晶フェライト磁性粉、六方晶フェライト磁性粒子の製造方法、および磁気記録媒体
JP6280922B2 (ja) * 2013-09-30 2018-02-14 富士フイルム株式会社 六方晶フェライト粒子の製造方法および磁気記録媒体の製造方法

Also Published As

Publication number Publication date
CN109087769B (zh) 2021-06-18
CN109087769A (zh) 2018-12-25
US11244701B2 (en) 2022-02-08
US20180366152A1 (en) 2018-12-20
JP2019003715A (ja) 2019-01-10

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