JPH0323972B2 - - Google Patents
Info
- Publication number
- JPH0323972B2 JPH0323972B2 JP57071216A JP7121682A JPH0323972B2 JP H0323972 B2 JPH0323972 B2 JP H0323972B2 JP 57071216 A JP57071216 A JP 57071216A JP 7121682 A JP7121682 A JP 7121682A JP H0323972 B2 JPH0323972 B2 JP H0323972B2
- Authority
- JP
- Japan
- Prior art keywords
- film
- magnetic
- recording medium
- substrate
- layer
- 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
- 239000000758 substrate Substances 0.000 claims description 12
- 229910018104 Ni-P Inorganic materials 0.000 claims description 10
- 229910018536 Ni—P Inorganic materials 0.000 claims description 10
- 229910020599 Co 3 O 4 Inorganic materials 0.000 claims description 5
- 230000005415 magnetization Effects 0.000 claims description 5
- 239000000696 magnetic material Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims 1
- 239000010408 film Substances 0.000 description 26
- 238000010438 heat treatment Methods 0.000 description 8
- 238000007747 plating Methods 0.000 description 4
- 239000010409 thin film Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910000889 permalloy Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000001552 radio frequency sputter deposition Methods 0.000 description 1
- 230000003746 surface roughness Effects 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
- G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
- G11B5/739—Magnetic recording media substrates
- G11B5/73911—Inorganic substrates
- G11B5/73913—Composites or coated substrates
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Magnetic Record Carriers (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Thin Magnetic Films (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57071216A JPS58189823A (ja) | 1982-04-30 | 1982-04-30 | 磁気記録媒体及びその製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP57071216A JPS58189823A (ja) | 1982-04-30 | 1982-04-30 | 磁気記録媒体及びその製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58189823A JPS58189823A (ja) | 1983-11-05 |
| JPH0323972B2 true JPH0323972B2 (de) | 1991-04-02 |
Family
ID=13454254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP57071216A Granted JPS58189823A (ja) | 1982-04-30 | 1982-04-30 | 磁気記録媒体及びその製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58189823A (de) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60160027A (ja) * | 1984-01-31 | 1985-08-21 | Sony Corp | 磁気記録媒体 |
| JPH0658733B2 (ja) * | 1984-09-07 | 1994-08-03 | 松下電器産業株式会社 | 金属薄膜型磁気テ−プ |
| JPS6192418A (ja) * | 1984-10-11 | 1986-05-10 | Teijin Ltd | 垂直磁気記録媒体 |
| JPS6199924A (ja) * | 1984-10-19 | 1986-05-19 | Matsushita Electric Ind Co Ltd | 磁気記録媒体 |
| US4729924A (en) * | 1984-12-21 | 1988-03-08 | Minnesota Mining And Manufacturing Company | Metallic thin film magnetic recording medium having a hard protective layer |
| JPS61220132A (ja) * | 1985-03-26 | 1986-09-30 | Mitsubishi Electric Corp | 垂直磁気記録媒体の製造方法 |
| US4686151A (en) * | 1985-04-09 | 1987-08-11 | Dynamic Disk | Substrate material for magnetic recording media |
| JP4352398B2 (ja) * | 2004-04-09 | 2009-10-28 | 富士電機デバイステクノロジー株式会社 | 磁気記録媒体用基板およびその製造方法 |
-
1982
- 1982-04-30 JP JP57071216A patent/JPS58189823A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58189823A (ja) | 1983-11-05 |
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