CH468306A - Verfahren zur Herstellung von magnetischen Chromdioxid-Mischphasen - Google Patents
Verfahren zur Herstellung von magnetischen Chromdioxid-MischphasenInfo
- Publication number
- CH468306A CH468306A CH869764A CH869764A CH468306A CH 468306 A CH468306 A CH 468306A CH 869764 A CH869764 A CH 869764A CH 869764 A CH869764 A CH 869764A CH 468306 A CH468306 A CH 468306A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- chromium dioxide
- dioxide mixed
- mixed phases
- magnetic chromium
- Prior art date
Links
- 229940090961 chromium dioxide Drugs 0.000 title 1
- IAQWMWUKBQPOIY-UHFFFAOYSA-N chromium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Cr+4] IAQWMWUKBQPOIY-UHFFFAOYSA-N 0.000 title 1
- AYTAKQFHWFYBMA-UHFFFAOYSA-N chromium(IV) oxide Inorganic materials O=[Cr]=O AYTAKQFHWFYBMA-UHFFFAOYSA-N 0.000 title 1
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
- C01P2002/00—Crystal-structural characteristics
- C01P2002/50—Solid solutions
- C01P2002/52—Solid solutions containing elements as dopants
-
- 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
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Hard Magnetic Materials (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Paints Or Removers (AREA)
- Compounds Of Iron (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEF0040333 | 1963-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH468306A true CH468306A (de) | 1969-02-15 |
Family
ID=7098186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH869764A CH468306A (de) | 1963-07-24 | 1964-07-02 | Verfahren zur Herstellung von magnetischen Chromdioxid-Mischphasen |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3371043A (enExample) |
| BE (1) | BE650936A (enExample) |
| CH (1) | CH468306A (enExample) |
| DE (2) | DE1467238A1 (enExample) |
| GB (1) | GB1073483A (enExample) |
| NL (1) | NL6408515A (enExample) |
| SE (1) | SE310171B (enExample) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3546005A (en) * | 1966-06-20 | 1970-12-08 | Gen Electric | Oriented cro2 films and method of producing same |
| US3904538A (en) * | 1969-02-12 | 1975-09-09 | Fuji Photo Film Co Ltd | Method of producing ferromagnetic chromium dioxides |
| US3512930A (en) * | 1969-05-07 | 1970-05-19 | Du Pont | Stabilized ferromagnetic chromium dioxide |
| US3647540A (en) * | 1970-05-25 | 1972-03-07 | Ibm | Magnetic compositions of praseodymium modified chromium oxide, methods of manufacture, and magnetic recording media containing same |
| JPS4843437B1 (enExample) * | 1970-12-16 | 1973-12-18 | ||
| DE2162914C2 (de) * | 1970-12-18 | 1984-07-19 | Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa | Autoklav für die Herstellung von ferromagnetischem Chromdioxid und modifiziertem Chromoxid |
| JPS4868498A (enExample) * | 1971-12-20 | 1973-09-18 | ||
| IT956230B (it) * | 1972-04-22 | 1973-10-10 | Montedison Spa | Composizione di biossido di cromo ferromagnetico modificato e p oces so di preparazione |
| JPS4918796A (enExample) * | 1972-06-05 | 1974-02-19 | ||
| DE2353132C3 (de) * | 1972-10-23 | 1978-03-09 | Hitachi, Ltd., Tokio | Modifiziertes, ferromagnetisches Chromdioxyd und Verfahren zu seiner Herstellung |
| JPS4962999A (enExample) * | 1972-10-23 | 1974-06-18 | ||
| JPS50150695A (enExample) * | 1974-05-27 | 1975-12-03 | ||
| IT1045191B (it) * | 1975-10-31 | 1980-05-10 | Montedison Spa | Procedimento per la produzione di biossido di cromo ferromagnetico |
| US4439285A (en) * | 1980-11-10 | 1984-03-27 | Omi International Corporation | Trivalent chromium electrolyte and process employing neodymium reducing agent |
| US4477318A (en) * | 1980-11-10 | 1984-10-16 | Omi International Corporation | Trivalent chromium electrolyte and process employing metal ion reducing agents |
| CN113921261B (zh) * | 2021-08-12 | 2023-10-20 | 中国计量大学 | 一种高性能高电阻率复合磁体的制备方法 |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3068176A (en) * | 1958-03-31 | 1962-12-11 | Du Pont | Ferromagnetic chromium oxides containing fluorine and their preparation |
| US3034988A (en) * | 1958-08-22 | 1962-05-15 | Du Pont | Modified chromium oxide ferromagnetic compositions, their preparation and use |
| US2923683A (en) * | 1957-06-19 | 1960-02-02 | Du Pont | Antimony-modified chromium oxide ferromagnetic compositions, their preparation and use |
| US3078147A (en) * | 1959-06-05 | 1963-02-19 | Du Pont | Ferromagnetic chromium oxide and preparation |
| US3243260A (en) * | 1961-06-12 | 1966-03-29 | Matsushita Electric Industrial Co Ltd | Method for preparing cro2 of rutile type crystalline structure |
| US3278263A (en) * | 1964-11-27 | 1966-10-11 | Du Pont | Ferromagnetic chromium dioxide and preparation thereof |
-
1963
- 1963-07-24 DE DE19631467238 patent/DE1467238A1/de active Pending
- 1963-07-24 DE DE19631467328 patent/DE1467328B2/de active Pending
-
1964
- 1964-07-02 CH CH869764A patent/CH468306A/de unknown
- 1964-07-23 SE SE8962/64A patent/SE310171B/xx unknown
- 1964-07-24 NL NL6408515A patent/NL6408515A/xx unknown
- 1964-07-24 BE BE650936D patent/BE650936A/xx unknown
- 1964-08-04 GB GB30925/64A patent/GB1073483A/en not_active Expired
-
1966
- 1966-06-27 US US560892A patent/US3371043A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| SE310171B (enExample) | 1969-04-21 |
| US3371043A (en) | 1968-02-27 |
| DE1467328B2 (de) | 1971-06-16 |
| DE1467328A1 (de) | 1969-01-23 |
| GB1073483A (en) | 1967-06-28 |
| BE650936A (enExample) | 1965-01-25 |
| DE1467238A1 (enExample) | 1969-01-23 |
| NL6408515A (enExample) | 1965-01-25 |
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