IT1097025B - Biossido di cromo ferromagnetico stabilizzato e procedimento per ottenerlo - Google Patents

Biossido di cromo ferromagnetico stabilizzato e procedimento per ottenerlo

Info

Publication number
IT1097025B
IT1097025B IT25960/78A IT2596078A IT1097025B IT 1097025 B IT1097025 B IT 1097025B IT 25960/78 A IT25960/78 A IT 25960/78A IT 2596078 A IT2596078 A IT 2596078A IT 1097025 B IT1097025 B IT 1097025B
Authority
IT
Italy
Prior art keywords
procedure
chrome dioxide
stabilized ferromagnetic
stabilized
dioxide
Prior art date
Application number
IT25960/78A
Other languages
English (en)
Other versions
IT7825960A0 (it
Inventor
Giampiero Basile
Giancarlo Boero
Original Assignee
Montedison Spa
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 Montedison Spa filed Critical Montedison Spa
Priority to IT25960/78A priority Critical patent/IT1097025B/it
Publication of IT7825960A0 publication Critical patent/IT7825960A0/it
Priority to EP79301408A priority patent/EP0007764B1/en
Priority to DE7979301408T priority patent/DE2960348D1/de
Priority to US06/057,817 priority patent/US4244932A/en
Priority to JP9250179A priority patent/JPS5537485A/ja
Application granted granted Critical
Publication of IT1097025B publication Critical patent/IT1097025B/it

Links

Classifications

    • 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
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/90—Magnetic feature
    • 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
IT25960/78A 1978-07-21 1978-07-21 Biossido di cromo ferromagnetico stabilizzato e procedimento per ottenerlo IT1097025B (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT25960/78A IT1097025B (it) 1978-07-21 1978-07-21 Biossido di cromo ferromagnetico stabilizzato e procedimento per ottenerlo
EP79301408A EP0007764B1 (en) 1978-07-21 1979-07-16 Stabilized ferromagnetic chromium dioxide and a process for preparing it
DE7979301408T DE2960348D1 (en) 1978-07-21 1979-07-16 Stabilized ferromagnetic chromium dioxide and a process for preparing it
US06/057,817 US4244932A (en) 1978-07-21 1979-07-16 Stabilized ferromagnetic chromium dioxide and process for obtaining same
JP9250179A JPS5537485A (en) 1978-07-21 1979-07-20 Stabilized ferromagnetic chromium oxide and preparing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT25960/78A IT1097025B (it) 1978-07-21 1978-07-21 Biossido di cromo ferromagnetico stabilizzato e procedimento per ottenerlo

Publications (2)

Publication Number Publication Date
IT7825960A0 IT7825960A0 (it) 1978-07-21
IT1097025B true IT1097025B (it) 1985-08-26

Family

ID=11218275

Family Applications (1)

Application Number Title Priority Date Filing Date
IT25960/78A IT1097025B (it) 1978-07-21 1978-07-21 Biossido di cromo ferromagnetico stabilizzato e procedimento per ottenerlo

Country Status (5)

Country Link
US (1) US4244932A (it)
EP (1) EP0007764B1 (it)
JP (1) JPS5537485A (it)
DE (1) DE2960348D1 (it)
IT (1) IT1097025B (it)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5295712A (en) * 1976-02-07 1977-08-11 Shinagawa Refractories Co Stamping material for conduits
DE3116257A1 (de) * 1980-05-30 1982-01-07 GAO Gesellschaft für Automation und Organisation mbH, 8000 München "wertpapier mit echtheitsmerkmalen"
EP0078042B1 (en) * 1981-10-26 1985-04-10 E.I. Du Pont De Nemours And Company Surface modified ferromagnetic chromium dioxide
DE3610411A1 (de) * 1986-03-27 1987-10-01 Basf Ag Verfahren zur stabilisierung von nadelfoermigem ferromagnetischem chromdioxid
US7147916B2 (en) * 2001-09-03 2006-12-12 Sony Corporation Magnetic material, method for producing the same, and magnetic recording medium
CN112374877B (zh) * 2020-10-09 2022-05-13 河南师范大学 具有磁阻转换行为的CoFe2O4-CrO2复合材料的制备方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB859937A (en) * 1959-03-25 1961-01-25 Du Pont Improvements in ferromagnetic materials and processes for their preparation
FR1407333A (fr) * 1963-07-24 1965-07-30 Bayer Ag Bioxyde de chrome ferromagnétique modifié
US3904538A (en) * 1969-02-12 1975-09-09 Fuji Photo Film Co Ltd Method of producing ferromagnetic chromium dioxides
US3687726A (en) * 1970-10-19 1972-08-29 Du Pont Alumina coated chromium dioxide
DE2124812A1 (de) * 1971-05-19 1972-11-30 Bayer Ag Verfahren zur Herstellung von ferromagnetischem Chromdioxid
JPS5121200A (en) * 1974-08-15 1976-02-20 Nippon Chemical Ind Anteikasareta kyojiseinisankakuromusoseibutsu
FR2386486A1 (fr) * 1977-04-07 1978-11-03 Montedison Spa Bioxyde de chrome ferromagnetique stabilise et son procede de preparation

Also Published As

Publication number Publication date
DE2960348D1 (en) 1981-08-20
US4244932A (en) 1981-01-13
JPS5537485A (en) 1980-03-15
EP0007764B1 (en) 1981-05-13
EP0007764A1 (en) 1980-02-06
IT7825960A0 (it) 1978-07-21

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