FR1129532A - Materials for magnetic recording - Google Patents
Materials for magnetic recordingInfo
- Publication number
- FR1129532A FR1129532A FR1129532DA FR1129532A FR 1129532 A FR1129532 A FR 1129532A FR 1129532D A FR1129532D A FR 1129532DA FR 1129532 A FR1129532 A FR 1129532A
- Authority
- FR
- France
- Prior art keywords
- materials
- magnetic recording
- recording
- magnetic
- 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
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/01—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics
- C04B35/26—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products based on oxide ceramics based on ferrites
- C04B35/2608—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead
- C04B35/2625—Compositions containing one or more ferrites of the group comprising manganese, zinc, nickel, copper or cobalt and one or more ferrites of the group comprising rare earth metals, alkali metals, alkaline earth metals or lead containing magnesium
-
- 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
- G11B5/70642—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 iron oxides
- G11B5/70678—Ferrites
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Compounds Of Iron (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1129532T | 1955-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1129532A true FR1129532A (en) | 1957-01-22 |
Family
ID=9636921
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1129532D Expired FR1129532A (en) | 1955-04-27 | 1955-04-27 | Materials for magnetic recording |
Country Status (2)
Country | Link |
---|---|
FR (1) | FR1129532A (en) |
GB (1) | GB795906A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3026215A (en) * | 1960-03-09 | 1962-03-20 | Fuji Photo Film Co Ltd | Process of producing magnetic sound recording material in which co-ni-fe ferrite columnar particles are placed in a direct current magnetic field and oriented by means of an ultrasonic wave and afterwards heated and cooled in the direct current magnetic field |
-
1955
- 1955-04-27 FR FR1129532D patent/FR1129532A/en not_active Expired
-
1956
- 1956-04-24 GB GB1256256A patent/GB795906A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB795906A (en) | 1958-06-04 |
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