CA1209262A - Magnetic recording medium - Google Patents
Magnetic recording mediumInfo
- Publication number
- CA1209262A CA1209262A CA000438300A CA438300A CA1209262A CA 1209262 A CA1209262 A CA 1209262A CA 000438300 A CA000438300 A CA 000438300A CA 438300 A CA438300 A CA 438300A CA 1209262 A CA1209262 A CA 1209262A
- Authority
- CA
- Canada
- Prior art keywords
- magnetic
- layer
- recording medium
- magnetic recording
- bismuth
- 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
- 230000005291 magnetic effect Effects 0.000 title claims abstract description 131
- 229910052751 metal Inorganic materials 0.000 claims abstract description 45
- 239000002184 metal Substances 0.000 claims abstract description 45
- 229910052797 bismuth Inorganic materials 0.000 claims abstract description 37
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 30
- 229910045601 alloy Inorganic materials 0.000 claims description 15
- 239000000956 alloy Substances 0.000 claims description 15
- 230000005294 ferromagnetic effect Effects 0.000 claims description 11
- 229910020630 Co Ni Inorganic materials 0.000 claims description 4
- 229910002440 Co–Ni Inorganic materials 0.000 claims description 4
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 150000002736 metal compounds Chemical class 0.000 claims 1
- 238000007738 vacuum evaporation Methods 0.000 claims 1
- 239000010409 thin film Substances 0.000 abstract description 4
- 239000010408 film Substances 0.000 description 13
- 238000001704 evaporation Methods 0.000 description 12
- 229910017709 Ni Co Inorganic materials 0.000 description 11
- 229910003267 Ni-Co Inorganic materials 0.000 description 11
- 229910003262 Ni‐Co Inorganic materials 0.000 description 11
- 238000010849 ion bombardment Methods 0.000 description 6
- 229920001721 polyimide Polymers 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 229910000531 Co alloy Inorganic materials 0.000 description 1
- 229910002453 Co-O-Co Inorganic materials 0.000 description 1
- 229910002454 Co–O–Co Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004962 Polyamide-imide Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 241000193803 Therea Species 0.000 description 1
- 229910002065 alloy metal Inorganic materials 0.000 description 1
- 230000005290 antiferromagnetic effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 238000007733 ion plating Methods 0.000 description 1
- 239000006247 magnetic powder Substances 0.000 description 1
- 239000002923 metal particle Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920002312 polyamide-imide Polymers 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 150000003377 silicon compounds Chemical class 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 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
- G11B5/66—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers
- G11B5/676—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent the record carriers consisting of several layers having magnetic layers separated by a nonmagnetic layer, e.g. antiferromagnetic layer, Cu layer or coupling layer
-
- 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
- G11B5/84—Processes or apparatus specially adapted for manufacturing record carriers
- G11B5/851—Coating a support with a magnetic layer by sputtering
-
- 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
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/90—Magnetic feature
-
- 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
- Y10S428/00—Stock material or miscellaneous articles
- Y10S428/922—Static electricity metal bleed-off metallic stock
- Y10S428/9265—Special properties
- Y10S428/928—Magnetic property
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12931—Co-, Fe-, or Ni-base components, alternative to each other
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
- Y10T428/2495—Thickness [relative or absolute]
- Y10T428/24967—Absolute thicknesses specified
- Y10T428/24975—No layer or component greater than 5 mils thick
-
- 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
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/26—Web or sheet containing structurally defined element or component, the element or component having a specified physical dimension
- Y10T428/263—Coating layer not in excess of 5 mils thick or equivalent
- Y10T428/264—Up to 3 mils
- Y10T428/265—1 mil or less
Landscapes
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Thin Magnetic Films (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP178749/82 | 1982-10-12 | ||
| JP57178749A JPS5968815A (ja) | 1982-10-12 | 1982-10-12 | 磁気記録媒体 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1209262A true CA1209262A (en) | 1986-08-05 |
Family
ID=16053913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000438300A Expired CA1209262A (en) | 1982-10-12 | 1983-10-04 | Magnetic recording medium |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4539264A (en, 2012) |
| JP (1) | JPS5968815A (en, 2012) |
| CA (1) | CA1209262A (en, 2012) |
| DE (1) | DE3336987A1 (en, 2012) |
| FR (1) | FR2534403B1 (en, 2012) |
| GB (1) | GB2129832A (en, 2012) |
| NL (1) | NL8303487A (en, 2012) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60154323A (ja) * | 1984-01-20 | 1985-08-14 | Sony Corp | 磁気記録媒体 |
| JPS60157715A (ja) * | 1984-01-26 | 1985-08-19 | Tdk Corp | 磁気記録媒体 |
| JPS60160015A (ja) * | 1984-01-31 | 1985-08-21 | Sony Corp | 磁気記録媒体 |
| JPS61158025A (ja) * | 1984-12-28 | 1986-07-17 | Canon Inc | 磁気記録媒体 |
| US4816351A (en) * | 1985-02-26 | 1989-03-28 | Canon Kabushiki Kaisha | Magnetic recording medium |
| JPS63237210A (ja) * | 1987-03-25 | 1988-10-03 | Sony Corp | 磁気記録媒体 |
| EP0421120B1 (en) * | 1989-10-05 | 1996-10-30 | International Business Machines Corporation | Thin film magnetic storage medium and method for the manufacture thereof |
| JPH06162493A (ja) * | 1992-11-18 | 1994-06-10 | Nec Ibaraki Ltd | 磁気ディスク用基板 |
| US5399386A (en) * | 1992-12-29 | 1995-03-21 | International Business Machines Corporation | In-situ texturing of a thin film magnetic medium |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1458353A (en, 2012) * | 1973-01-17 | 1976-12-15 | ||
| US4307156A (en) * | 1978-06-13 | 1981-12-22 | Nippon Electric Co., Ltd. | Magnetic record member |
| JPS6052889B2 (ja) * | 1979-06-20 | 1985-11-21 | 三菱電機株式会社 | 放電加工用電源装置 |
| US4254189A (en) * | 1979-07-05 | 1981-03-03 | Memorex Corporation | Disc having substrate, intermediate layer and magnetically sensitive layer wherein intermediate layer has melting point less than annealing temperature of substrate but higher than processing temperature of magnetically sensitive layer |
| JPS5634139A (en) * | 1979-08-22 | 1981-04-06 | Ulvac Corp | Magnetic recording medium |
| JPS5634150A (en) * | 1979-08-25 | 1981-04-06 | Hitachi Maxell Ltd | Manufacture of magnetic recording medium |
| DE3046564A1 (de) * | 1979-12-10 | 1981-09-17 | Fuji Photo Film Co., Ltd., Minami-Ashigara, Kanagawa | "verfahren und vorrichtung zur vakuum-bedampfung" |
| JPS56143519A (en) * | 1980-04-08 | 1981-11-09 | Tdk Corp | Magnetic recording medium and manufacturing device |
| DE3212907C2 (de) * | 1981-04-06 | 1985-10-24 | Olympus Optical Co., Ltd., Tokio/Tokyo | Magnetband sowie Verfahren zu dessen Herstellung |
| CA1188796A (en) * | 1981-04-14 | 1985-06-11 | Kenji Yazawa | Magnetic recording medium |
| US4450186A (en) * | 1981-08-20 | 1984-05-22 | Matsushita Electric Industrial Co., Ltd. | Method and device for manufacturing magnetic recording medium |
-
1982
- 1982-10-12 JP JP57178749A patent/JPS5968815A/ja active Granted
-
1983
- 1983-10-04 CA CA000438300A patent/CA1209262A/en not_active Expired
- 1983-10-06 US US06/539,654 patent/US4539264A/en not_active Expired - Fee Related
- 1983-10-07 GB GB08326882A patent/GB2129832A/en not_active Withdrawn
- 1983-10-11 DE DE19833336987 patent/DE3336987A1/de not_active Withdrawn
- 1983-10-11 NL NL8303487A patent/NL8303487A/nl not_active Application Discontinuation
- 1983-10-12 FR FR8316228A patent/FR2534403B1/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5968815A (ja) | 1984-04-18 |
| FR2534403B1 (fr) | 1987-03-20 |
| FR2534403A1 (fr) | 1984-04-13 |
| DE3336987A1 (de) | 1984-04-19 |
| GB8326882D0 (en) | 1983-11-09 |
| JPH044649B2 (en, 2012) | 1992-01-29 |
| GB2129832A (en) | 1984-05-23 |
| US4539264A (en) | 1985-09-03 |
| NL8303487A (nl) | 1984-05-01 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |