GB1268029A - Improvements in and relating to single crystal ferrimagnetic films - Google Patents
Improvements in and relating to single crystal ferrimagnetic filmsInfo
- Publication number
- GB1268029A GB1268029A GB37908/70A GB3790870A GB1268029A GB 1268029 A GB1268029 A GB 1268029A GB 37908/70 A GB37908/70 A GB 37908/70A GB 3790870 A GB3790870 A GB 3790870A GB 1268029 A GB1268029 A GB 1268029A
- Authority
- GB
- United Kingdom
- Prior art keywords
- film
- substrate
- orientation
- single crystal
- spinning
- 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
- 239000013078 crystal Substances 0.000 title abstract 2
- 230000005293 ferrimagnetic effect Effects 0.000 title 1
- 239000000758 substrate Substances 0.000 abstract 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract 2
- 239000002223 garnet Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000009987 spinning Methods 0.000 abstract 2
- 238000004544 sputter deposition Methods 0.000 abstract 2
- 229910052692 Dysprosium Inorganic materials 0.000 abstract 1
- 229910052771 Terbium Inorganic materials 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 238000000151 deposition Methods 0.000 abstract 1
- 230000005294 ferromagnetic effect Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 abstract 1
- 239000002184 metal Substances 0.000 abstract 1
- 150000002823 nitrates Chemical class 0.000 abstract 1
- -1 nitrates Chemical class 0.000 abstract 1
- 229920001220 nitrocellulos Polymers 0.000 abstract 1
- 229910052761 rare earth metal Inorganic materials 0.000 abstract 1
- 150000002910 rare earth metals Chemical class 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
Classifications
-
- 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
- H01F10/08—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers
- H01F10/10—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition
- H01F10/18—Thin magnetic films, e.g. of one-domain structure characterised by magnetic layers characterised by the composition being compounds
- H01F10/20—Ferrites
- H01F10/24—Garnets
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10S117/901—Levitation, reduced gravity, microgravity, space
- Y10S117/902—Specified orientation, shape, crystallography, or size of seed or substrate
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S117/00—Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
- Y10S117/906—Special atmosphere other than vacuum or inert
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Power Engineering (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
- Thin Magnetic Films (AREA)
Abstract
1,268,029. Coated products. INTERNATIONAL BUSINESS MACHINES CORP. 6 Aug., 1970 [29 Sept., 1969], No. 37908/70. Heading B2E. [Also in Divisions C7 and H1] A single crystal ferromagnetic film is made by depositing on a R 3 Al 5 O 12 garnet substrate (R is Y or a rare-earth metal of atomic number 58-71 inclusive) having a [111] or [100] orientation, a film of bd 3-x M x Fe 12 O 12 (M is Tb or Dy) and crystallising the deposited film. When the substrate orientation is [111], X is 0.1 to 0.6 when M is Tb, and 0.1 to 1.7 when M is Dy. When the substrate orientation is [100], X is 1 to 2.7 when M is Tb and 0.27 to 1.7 when M is Dy. The film may be made by sputtering, using the composition to be deposited as the cathode of the sputtering system. A two-cathode technique may be used. Alternatively, the film may be made by "spinning". In this embodiment, a concentrated solution of metal salts, e.g. nitrates, is diluted with ethanol and dripped onto a horizontally rotating substrate. The nitrate film, which is dry after 15-20 secs. spinning, is heated at 300-500C to decompose it to a glassy oxide film about 1000 thick. After repeating the process to obtain a film of desired thickness, e.g. 1Á 0.2Á, the oxide film is heated at 650-800C to cause crystallisation to a garnet structure. The product has a square hysteresis loop and a compensation temperature above 250F.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US86208069A | 1969-09-29 | 1969-09-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1268029A true GB1268029A (en) | 1972-03-22 |
Family
ID=25337594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB37908/70A Expired GB1268029A (en) | 1969-09-29 | 1970-08-06 | Improvements in and relating to single crystal ferrimagnetic films |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3607390A (en) |
| JP (1) | JPS4932597B1 (en) |
| CA (1) | CA943439A (en) |
| DE (1) | DE2041847C3 (en) |
| FR (1) | FR2060934A5 (en) |
| GB (1) | GB1268029A (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3837911A (en) * | 1971-04-12 | 1974-09-24 | Bell Telephone Labor Inc | Magnetic devices utilizing garnet epitaxial materials and method of production |
| FR2138410B1 (en) * | 1971-05-25 | 1973-05-25 | Commissariat Energie Atomique | |
| DE2349348C2 (en) * | 1972-10-07 | 1983-02-10 | N.V. Philips' Gloeilampenfabrieken, 5621 Eindhoven | Process for growing a monocrystalline, bismuth-doped yttrium or rare earth metal-iron garnet layer |
| FR2582862B1 (en) * | 1985-05-30 | 1987-07-17 | Thomson Csf | SENSOR WITH LINEAR MAGNETO-RESISTIVE EFFECT, ITS MANUFACTURING METHOD AND ITS APPLICATION IN A MAGNETIC DOMAIN DETECTOR |
| JPS623022A (en) * | 1985-06-27 | 1987-01-09 | Nec Corp | Magneto-optical garnet |
| JP2896193B2 (en) * | 1989-07-27 | 1999-05-31 | 株式会社東芝 | Method for manufacturing oxide crystal orientation film, oxide crystal orientation film, and magneto-optical recording medium |
| EP0410627A1 (en) * | 1989-07-27 | 1991-01-30 | Kabushiki Kaisha Toshiba | Oxide film with preferred crystal orientation, method of manufacturing the same, and magneto-optical recording medium |
| US5851284A (en) * | 1995-11-21 | 1998-12-22 | Nippon Telegraph And Telephone Corporation | Process for producing garnet single crystal |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3429740A (en) * | 1965-09-24 | 1969-02-25 | North American Rockwell | Growing garnet on non-garnet single crystal |
| US3486937A (en) * | 1967-03-24 | 1969-12-30 | Perkin Elmer Corp | Method of growing a single crystal film of a ferrimagnetic material |
| US3437577A (en) * | 1967-06-26 | 1969-04-08 | Ibm | Method of fabricating uniform rare earth iron garnet thin films by sputtering |
-
1969
- 1969-09-29 US US862080A patent/US3607390A/en not_active Expired - Lifetime
-
1970
- 1970-08-06 GB GB37908/70A patent/GB1268029A/en not_active Expired
- 1970-08-10 FR FR7032138A patent/FR2060934A5/fr not_active Expired
- 1970-08-22 DE DE2041847A patent/DE2041847C3/en not_active Expired
- 1970-08-28 JP JP45075029A patent/JPS4932597B1/ja active Pending
- 1970-09-10 CA CA092,736A patent/CA943439A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4932597B1 (en) | 1974-08-31 |
| DE2041847C3 (en) | 1978-09-28 |
| DE2041847B2 (en) | 1978-01-26 |
| US3607390A (en) | 1971-09-21 |
| DE2041847A1 (en) | 1971-04-08 |
| FR2060934A5 (en) | 1971-06-18 |
| CA943439A (en) | 1974-03-12 |
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