FR1407333A - Modified ferromagnetic chromium dioxide - Google Patents
Modified ferromagnetic chromium dioxideInfo
- Publication number
- FR1407333A FR1407333A FR982724A FR982724A FR1407333A FR 1407333 A FR1407333 A FR 1407333A FR 982724 A FR982724 A FR 982724A FR 982724 A FR982724 A FR 982724A FR 1407333 A FR1407333 A FR 1407333A
- Authority
- FR
- France
- Prior art keywords
- chromium dioxide
- ferromagnetic chromium
- modified ferromagnetic
- modified
- dioxide
- 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
Links
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
- H01F1/0302—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
-
- 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
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR982724A FR1407333A (en) | 1963-07-24 | 1964-07-23 | Modified ferromagnetic chromium dioxide |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEF0040333 | 1963-07-24 | ||
FR982724A FR1407333A (en) | 1963-07-24 | 1964-07-23 | Modified ferromagnetic chromium dioxide |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1407333A true FR1407333A (en) | 1965-07-30 |
Family
ID=25975856
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR982724A Expired FR1407333A (en) | 1963-07-24 | 1964-07-23 | Modified ferromagnetic chromium dioxide |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1407333A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3486851A (en) * | 1967-03-01 | 1969-12-30 | Du Pont | Formation of ferromagnetic cro2 by decomposition of higher valent chromium oxides |
FR2050481A1 (en) * | 1969-07-03 | 1971-04-02 | Montedison Spa | Ferromagnetic chromium dioxide prepn |
DE1905584C3 (en) * | 1968-02-13 | 1971-06-24 | Du Pont | Process for improving the ferromagnetic properties of chromium dioxide |
EP0007764A1 (en) * | 1978-07-21 | 1980-02-06 | Montedison S.p.A. | Stabilized ferromagnetic chromium dioxide and a process for preparing it |
-
1964
- 1964-07-23 FR FR982724A patent/FR1407333A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3486851A (en) * | 1967-03-01 | 1969-12-30 | Du Pont | Formation of ferromagnetic cro2 by decomposition of higher valent chromium oxides |
DE1905584C3 (en) * | 1968-02-13 | 1971-06-24 | Du Pont | Process for improving the ferromagnetic properties of chromium dioxide |
FR2050481A1 (en) * | 1969-07-03 | 1971-04-02 | Montedison Spa | Ferromagnetic chromium dioxide prepn |
EP0007764A1 (en) * | 1978-07-21 | 1980-02-06 | Montedison S.p.A. | Stabilized ferromagnetic chromium dioxide and a process for preparing it |
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