IT967820B - Procedimento per la fabbricazione di composizioni magnetiche di ossido di cromo modificato con carbonio particolarmente per mezzi magnetici di registrazione - Google Patents

Procedimento per la fabbricazione di composizioni magnetiche di ossido di cromo modificato con carbonio particolarmente per mezzi magnetici di registrazione

Info

Publication number
IT967820B
IT967820B IT29623/72A IT2962372A IT967820B IT 967820 B IT967820 B IT 967820B IT 29623/72 A IT29623/72 A IT 29623/72A IT 2962372 A IT2962372 A IT 2962372A IT 967820 B IT967820 B IT 967820B
Authority
IT
Italy
Prior art keywords
magnetic
procedure
manufacture
recording means
oxide modified
Prior art date
Application number
IT29623/72A
Other languages
English (en)
Original Assignee
Ibm
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 Ibm filed Critical Ibm
Application granted granted Critical
Publication of IT967820B publication Critical patent/IT967820B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
    • 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
    • G11B5/70636—CrO2
    • 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
    • H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
    • H01F1/0311—Compounds
    • H01F1/0313—Oxidic compounds
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/61—Micrometer sized, i.e. from 1-100 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
    • C01P2004/00—Particle morphology
    • C01P2004/60—Particles characterised by their size
    • C01P2004/64—Nanometer sized, i.e. from 1-100 nanometer
    • 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
    • C01P2006/80—Compositional purity

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Nanotechnology (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Composite Materials (AREA)
  • Hard Magnetic Materials (AREA)
  • Paints Or Removers (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Soft Magnetic Materials (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
IT29623/72A 1971-12-27 1972-09-25 Procedimento per la fabbricazione di composizioni magnetiche di ossido di cromo modificato con carbonio particolarmente per mezzi magnetici di registrazione IT967820B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00212627A US3843403A (en) 1971-12-27 1971-12-27 Methods of manufacturing ferromagnetic carbon modified chromium oxide and compositions and recording media containing same

Publications (1)

Publication Number Publication Date
IT967820B true IT967820B (it) 1974-03-11

Family

ID=22791818

Family Applications (1)

Application Number Title Priority Date Filing Date
IT29623/72A IT967820B (it) 1971-12-27 1972-09-25 Procedimento per la fabbricazione di composizioni magnetiche di ossido di cromo modificato con carbonio particolarmente per mezzi magnetici di registrazione

Country Status (10)

Country Link
US (1) US3843403A (it)
JP (1) JPS5548443B2 (it)
CA (1) CA990062A (it)
CH (1) CH580035A5 (it)
ES (1) ES410005A1 (it)
FR (1) FR2166221B1 (it)
GB (1) GB1409090A (it)
IT (1) IT967820B (it)
NL (1) NL7215715A (it)
SE (1) SE387194B (it)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252758A (en) * 1979-03-14 1981-02-24 Akira Yamaguchi Method of Producing a sintered chromium oxide body
JPS58171610U (ja) * 1982-05-12 1983-11-16 株式会社資生堂 コンパクト容器
US4595631A (en) * 1982-08-10 1986-06-17 Victor Company Of Japan, Limited Magnetic recording media comprising carbon black-adsorbed metal oxide particles in a magnetic recording layer
JPH0433059Y2 (it) * 1986-05-08 1992-08-07
JPS6315912U (it) * 1986-07-15 1988-02-02
JPH03123415U (it) * 1990-03-28 1991-12-16
JP7510126B2 (ja) * 2019-12-18 2024-07-03 トーラスエナジー株式会社 フェライトコア及びその製造方法

Also Published As

Publication number Publication date
FR2166221A1 (it) 1973-08-10
DE2259255A1 (de) 1973-07-12
NL7215715A (it) 1973-06-29
CH580035A5 (it) 1976-09-30
SE387194B (sv) 1976-08-30
GB1409090A (en) 1975-10-08
JPS4881091A (it) 1973-10-30
ES410005A1 (es) 1975-12-01
FR2166221B1 (it) 1984-02-17
CA990062A (en) 1976-06-01
DE2259255B2 (de) 1975-11-13
US3843403A (en) 1974-10-22
JPS5548443B2 (it) 1980-12-05

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