FR2138160A1 - Ferromagnetic chromium dioxide prepn by two stages - heating chromium trioxide with tellurium cpd - Google Patents

Ferromagnetic chromium dioxide prepn by two stages - heating chromium trioxide with tellurium cpd

Info

Publication number
FR2138160A1
FR2138160A1 FR7218148A FR7218148A FR2138160A1 FR 2138160 A1 FR2138160 A1 FR 2138160A1 FR 7218148 A FR7218148 A FR 7218148A FR 7218148 A FR7218148 A FR 7218148A FR 2138160 A1 FR2138160 A1 FR 2138160A1
Authority
FR
France
Prior art keywords
pref
atm
degrees
cpd
heating
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.)
Withdrawn
Application number
FR7218148A
Other languages
English (en)
French (fr)
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.)
Bayer AG
Original Assignee
Bayer AG
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 Bayer AG filed Critical Bayer AG
Publication of FR2138160A1 publication Critical patent/FR2138160A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C1/00—Treatment of specific inorganic materials other than fibrous fillers; Preparation of carbon black
    • C09C1/34—Compounds of chromium
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pigments, Carbon Blacks, Or Wood Stains (AREA)
  • Hard Magnetic Materials (AREA)
FR7218148A 1971-05-19 1972-05-19 Ferromagnetic chromium dioxide prepn by two stages - heating chromium trioxide with tellurium cpd Withdrawn FR2138160A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712124812 DE2124812A1 (de) 1971-05-19 1971-05-19 Verfahren zur Herstellung von ferromagnetischem Chromdioxid

Publications (1)

Publication Number Publication Date
FR2138160A1 true FR2138160A1 (en) 1972-12-29

Family

ID=5808310

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7218148A Withdrawn FR2138160A1 (en) 1971-05-19 1972-05-19 Ferromagnetic chromium dioxide prepn by two stages - heating chromium trioxide with tellurium cpd

Country Status (5)

Country Link
BE (1) BE783763A (it)
DE (1) DE2124812A1 (it)
FR (1) FR2138160A1 (it)
IT (1) IT957902B (it)
NL (1) NL7206854A (it)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001524A1 (fr) * 1977-10-04 1979-04-18 ANVAR Agence Nationale de Valorisation de la Recherche Nouveau matériau ferromagnétique à base de dioxyde de chrome et de dioxyde de rhodium et son obtention
FR2405220A1 (fr) * 1977-10-04 1979-05-04 Anvar Nouveau materiau ferromagnetique a base de dioxyde de chrome et de dioxyde de rhodium et son obtention
EP0007764A1 (en) * 1978-07-21 1980-02-06 Montedison S.p.A. Stabilized ferromagnetic chromium dioxide and a process for preparing it
FR2433483A2 (fr) * 1978-08-18 1980-03-14 Anvar Materiau ferromagnetique a base de dioxyde de chrome et de dioxyde de rhodium et son obtention
FR2502384A1 (fr) * 1981-03-17 1982-09-24 Centre Nat Rech Scient Nouveau materiau ferromagnetique a base de chrome et d'iridium, son obtention et son application comme materiau d'enregistrement
EP0146127A2 (en) * 1983-12-16 1985-06-26 E.I. Du Pont De Nemours And Company Controlled initiation chromium dioxide synthesis

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109467433B (zh) * 2018-12-14 2021-03-30 电子科技大学 一种Co-Ti-Ta基介质陶瓷材料及其制备方法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001524A1 (fr) * 1977-10-04 1979-04-18 ANVAR Agence Nationale de Valorisation de la Recherche Nouveau matériau ferromagnétique à base de dioxyde de chrome et de dioxyde de rhodium et son obtention
FR2405220A1 (fr) * 1977-10-04 1979-05-04 Anvar Nouveau materiau ferromagnetique a base de dioxyde de chrome et de dioxyde de rhodium et son obtention
US4311770A (en) * 1977-10-04 1982-01-19 Agence Nationale De Valorisation De La Recherche (Anvar) Novel ferromagnetic chromium dioxide and rhodium dioxide material and its preparation
EP0007764A1 (en) * 1978-07-21 1980-02-06 Montedison S.p.A. Stabilized ferromagnetic chromium dioxide and a process for preparing it
FR2433483A2 (fr) * 1978-08-18 1980-03-14 Anvar Materiau ferromagnetique a base de dioxyde de chrome et de dioxyde de rhodium et son obtention
FR2502384A1 (fr) * 1981-03-17 1982-09-24 Centre Nat Rech Scient Nouveau materiau ferromagnetique a base de chrome et d'iridium, son obtention et son application comme materiau d'enregistrement
EP0146127A2 (en) * 1983-12-16 1985-06-26 E.I. Du Pont De Nemours And Company Controlled initiation chromium dioxide synthesis
EP0146127A3 (en) * 1983-12-16 1987-06-16 E.I. Du Pont De Nemours And Company Controlled initiation chromium dioxide synthesis

Also Published As

Publication number Publication date
IT957902B (it) 1973-10-20
BE783763A (fr) 1972-11-20
DE2124812A1 (de) 1972-11-30
NL7206854A (it) 1972-11-21

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Legal Events

Date Code Title Description
RE Withdrawal of published application