GB1207488A - Magnetic stores - Google Patents
Magnetic storesInfo
- Publication number
- GB1207488A GB1207488A GB54273/66A GB5427366A GB1207488A GB 1207488 A GB1207488 A GB 1207488A GB 54273/66 A GB54273/66 A GB 54273/66A GB 5427366 A GB5427366 A GB 5427366A GB 1207488 A GB1207488 A GB 1207488A
- Authority
- GB
- United Kingdom
- Prior art keywords
- wire
- ferrite
- sintering
- electrode
- deposits
- 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
- 229910000859 α-Fe Inorganic materials 0.000 abstract 6
- 238000005245 sintering Methods 0.000 abstract 4
- 239000002245 particle Substances 0.000 abstract 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 2
- 239000004020 conductor Substances 0.000 abstract 2
- 238000010438 heat treatment Methods 0.000 abstract 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 abstract 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 abstract 1
- 229910001260 Pt alloy Inorganic materials 0.000 abstract 1
- 229920001800 Shellac Polymers 0.000 abstract 1
- 150000001298 alcohols Chemical class 0.000 abstract 1
- 239000011248 coating agent Substances 0.000 abstract 1
- 238000000576 coating method Methods 0.000 abstract 1
- 238000004320 controlled atmosphere Methods 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 230000008021 deposition Effects 0.000 abstract 1
- 238000001652 electrophoretic deposition Methods 0.000 abstract 1
- 150000002148 esters Chemical class 0.000 abstract 1
- 229930195733 hydrocarbon Natural products 0.000 abstract 1
- 150000002430 hydrocarbons Chemical class 0.000 abstract 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 abstract 1
- 150000002576 ketones Chemical class 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- KBMLJKBBKGNETC-UHFFFAOYSA-N magnesium manganese Chemical compound [Mg].[Mn] KBMLJKBBKGNETC-UHFFFAOYSA-N 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229910000510 noble metal Inorganic materials 0.000 abstract 1
- 229910052697 platinum Inorganic materials 0.000 abstract 1
- ZLGIYFNHBLSMPS-ATJNOEHPSA-N shellac Chemical compound OCCCCCC(O)C(O)CCCCCCCC(O)=O.C1C23[C@H](C(O)=O)CCC2[C@](C)(CO)[C@@H]1C(C(O)=O)=C[C@@H]3O ZLGIYFNHBLSMPS-ATJNOEHPSA-N 0.000 abstract 1
- 239000004208 shellac Substances 0.000 abstract 1
- 229940113147 shellac Drugs 0.000 abstract 1
- 235000013874 shellac Nutrition 0.000 abstract 1
- 239000000725 suspension Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 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
- G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
- G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
- G11B5/658—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing oxygen, e.g. molecular oxygen or magnetic oxide
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F10/00—Thin magnetic films, e.g. of one-domain structure
- H01F10/06—Thin magnetic films, e.g. of one-domain structure characterised by the coupling or physical contact with connecting or interacting conductors
Landscapes
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Soft Magnetic Materials (AREA)
- Mram Or Spin Memory Techniques (AREA)
Abstract
1,207,488. Magnetic structures. NATIONAL RESEARCH DEVELOPMENT CORP. 4 Dec., 1967 [5 Dec., 1966], No. 54273/66. Heading H1H. [Also in Divisions C7 and H3] In a magnetic store (see Division H3) a wire is coated with a ferrite. The coating is applied by immersing the wire and an electrode in a liquid such as alcohols, ketones, esters, hydrocarbons on pure water containing a suspension of ferrite particles, applying a potential difference to the wire and electrode to cause electrophoretic deposition of the particles on the wire until the deposits coalesce and sintering the deposits. In an example the ferrite solution comprises a manganese-magnesium ferrite, presintered and ground to mixed particle sizes of the order of one micron or less, absolute ethanol, Shellac solution and ferric chloride solution. Voltages from 6 to 120 volts are applied across the wire and electrode for one to two minutes. After deposition sintering is carried out by heating in air to 1360 C. for 20 hours, allowing to cool to 110 C., changing the atmosphere to nitrogen and maintaining the temperature at 1100 C. for 2 hours and allowing to cool to ambient temperature. In order to reduce strain in the ferrite during or after sintering an underlayer of a low melting point or easily oxidizable conductive material may be deposited on the wires before the ferrite, which layer is then melted or oxidized away. The sintering may be carried out by heating the electrical conductor in a controlled atmosphere. The wire may be a noble metal such as platinum or platinum alloy.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB54273/66A GB1207488A (en) | 1966-12-05 | 1966-12-05 | Magnetic stores |
| NL6716536A NL6716536A (en) | 1966-12-05 | 1967-12-05 | |
| DE19671524979 DE1524979A1 (en) | 1966-12-05 | 1967-12-05 | Magnetic storage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB54273/66A GB1207488A (en) | 1966-12-05 | 1966-12-05 | Magnetic stores |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1207488A true GB1207488A (en) | 1970-10-07 |
Family
ID=10470469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB54273/66A Expired GB1207488A (en) | 1966-12-05 | 1966-12-05 | Magnetic stores |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE1524979A1 (en) |
| GB (1) | GB1207488A (en) |
| NL (1) | NL6716536A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117795A (en) * | 1982-04-06 | 1983-10-19 | Standard Telephones Cables Ltd | Fabricating capacitors; forming ceramic films |
| CN110713323A (en) * | 2019-09-26 | 2020-01-21 | 欧涛 | Coal mine wastewater treatment system and process |
-
1966
- 1966-12-05 GB GB54273/66A patent/GB1207488A/en not_active Expired
-
1967
- 1967-12-05 DE DE19671524979 patent/DE1524979A1/en active Pending
- 1967-12-05 NL NL6716536A patent/NL6716536A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2117795A (en) * | 1982-04-06 | 1983-10-19 | Standard Telephones Cables Ltd | Fabricating capacitors; forming ceramic films |
| CN110713323A (en) * | 2019-09-26 | 2020-01-21 | 欧涛 | Coal mine wastewater treatment system and process |
| CN110713323B (en) * | 2019-09-26 | 2021-10-08 | 安徽恒源煤电股份有限公司 | Coal mine wastewater treatment system and process |
Also Published As
| Publication number | Publication date |
|---|---|
| DE1524979A1 (en) | 1970-11-26 |
| NL6716536A (en) | 1968-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PLNP | Patent lapsed through nonpayment of renewal fees |