CH545252A - Verfahren zur Herstellung von ferromagnetischem Chromdioxid - Google Patents
Verfahren zur Herstellung von ferromagnetischem ChromdioxidInfo
- Publication number
- CH545252A CH545252A CH610070A CH610070A CH545252A CH 545252 A CH545252 A CH 545252A CH 610070 A CH610070 A CH 610070A CH 610070 A CH610070 A CH 610070A CH 545252 A CH545252 A CH 545252A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- chromium dioxide
- ferromagnetic chromium
- ferromagnetic
- dioxide
- 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
- 230000005294 ferromagnetic effect Effects 0.000 title 1
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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/20—Particle morphology extending in two dimensions, e.g. plate-like
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Hard Magnetic Materials (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Magnetic Record Carriers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691922409 DE1922409A1 (de) | 1969-05-02 | 1969-05-02 | Verfahren zur Herstellung von ferromagnetischem Chromdioxid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH545252A true CH545252A (de) | 1973-12-15 |
Family
ID=5733048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH610070A CH545252A (de) | 1969-05-02 | 1970-04-23 | Verfahren zur Herstellung von ferromagnetischem Chromdioxid |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US3696039A (de) |
| JP (1) | JPS4828274B1 (de) |
| BE (1) | BE749818A (de) |
| CA (1) | CA932944A (de) |
| CH (1) | CH545252A (de) |
| DE (1) | DE1922409A1 (de) |
| FR (1) | FR2041805B1 (de) |
| GB (1) | GB1316664A (de) |
| NL (1) | NL7006481A (de) |
| SE (1) | SE345649B (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE389220B (sv) * | 1972-06-30 | 1976-10-25 | Montedison Spa | Sett for framstellning av ferromagnetisk krondioxid med fin och homogen granulometri vilket sett medfor utvalda magnetiska egenskaper |
| IT1045191B (it) * | 1975-10-31 | 1980-05-10 | Montedison Spa | Procedimento per la produzione di biossido di cromo ferromagnetico |
| DE3609971A1 (de) * | 1986-03-25 | 1987-10-01 | Basf Ag | Verfahren zur herstellung von chrom(iii)oxid, eine vorrichtung zur durchfuehrung des verfahrens sowie die verwendung des chrom(iii)oxids als ausgangsmaterial fuer die chromdioxid-synthese |
| US4698220A (en) * | 1986-03-28 | 1987-10-06 | E. I. Du Pont De Nemours And Company | Partitioned reduction process for ferromagnetic chromium dioxide |
| US4769165A (en) * | 1987-01-20 | 1988-09-06 | E. I. Du Pont De Nemours And Company | Process for synthesis of ferromagnetic chromium dioxide |
| DE3728453A1 (de) * | 1987-08-26 | 1989-03-09 | Basf Ag | Verfahren zur herstellung von modifiziertem, ferromagnetischem chromdioxid |
-
1969
- 1969-05-02 DE DE19691922409 patent/DE1922409A1/de active Pending
-
1970
- 1970-04-23 CH CH610070A patent/CH545252A/de not_active IP Right Cessation
- 1970-04-27 CA CA081155A patent/CA932944A/en not_active Expired
- 1970-04-28 US US32648A patent/US3696039A/en not_active Expired - Lifetime
- 1970-04-29 SE SE5965/70A patent/SE345649B/xx unknown
- 1970-04-30 BE BE749818D patent/BE749818A/xx unknown
- 1970-04-30 FR FR7016025A patent/FR2041805B1/fr not_active Expired
- 1970-04-30 GB GB2077670A patent/GB1316664A/en not_active Expired
- 1970-05-01 NL NL7006481A patent/NL7006481A/xx unknown
- 1970-05-02 JP JP45037419A patent/JPS4828274B1/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| FR2041805A1 (de) | 1971-02-05 |
| DE1922409A1 (de) | 1970-11-12 |
| BE749818A (fr) | 1970-10-30 |
| NL7006481A (de) | 1970-11-04 |
| US3696039A (en) | 1972-10-03 |
| SE345649B (de) | 1972-06-05 |
| GB1316664A (en) | 1973-05-09 |
| JPS4828274B1 (de) | 1973-08-30 |
| FR2041805B1 (de) | 1974-04-26 |
| CA932944A (en) | 1973-09-04 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased |