JPS6218961B2 - - Google Patents
Info
- Publication number
- JPS6218961B2 JPS6218961B2 JP55085613A JP8561380A JPS6218961B2 JP S6218961 B2 JPS6218961 B2 JP S6218961B2 JP 55085613 A JP55085613 A JP 55085613A JP 8561380 A JP8561380 A JP 8561380A JP S6218961 B2 JPS6218961 B2 JP S6218961B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic
- layer
- recording
- recording medium
- information
- 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
- 238000000034 method Methods 0.000 claims description 16
- 230000005415 magnetization Effects 0.000 description 12
- 239000000696 magnetic material Substances 0.000 description 10
- 239000000203 mixture Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 229910052688 Gadolinium Inorganic materials 0.000 description 3
- 229910016629 MnBi Inorganic materials 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 3
- 150000002910 rare earth metals Chemical class 0.000 description 3
- 229910052723 transition metal Inorganic materials 0.000 description 3
- 229910000599 Cr alloy Inorganic materials 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000003624 transition metals Chemical class 0.000 description 2
- 229910020630 Co Ni Inorganic materials 0.000 description 1
- 229910002440 Co–Ni Inorganic materials 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
- 229910000767 Tm alloy Inorganic materials 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B13/00—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for
- G11B13/04—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties
- G11B13/045—Recording simultaneously or selectively by methods covered by different main groups among G11B3/00, G11B5/00, G11B7/00 and G11B9/00; Record carriers therefor not otherwise provided for; Reproducing therefrom not otherwise provided for magnetically or by magnetisation and optically or by radiation, for changing or sensing optical properties combined recording by magnetic and optic means
Landscapes
- Magnetic Record Carriers (AREA)
- Optical Record Carriers And Manufacture Thereof (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8561380A JPS5712401A (en) | 1980-06-24 | 1980-06-24 | Recording system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8561380A JPS5712401A (en) | 1980-06-24 | 1980-06-24 | Recording system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5712401A JPS5712401A (en) | 1982-01-22 |
| JPS6218961B2 true JPS6218961B2 (enrdf_load_stackoverflow) | 1987-04-25 |
Family
ID=13863682
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8561380A Granted JPS5712401A (en) | 1980-06-24 | 1980-06-24 | Recording system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5712401A (enrdf_load_stackoverflow) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5954055A (ja) * | 1982-09-20 | 1984-03-28 | Sharp Corp | 磁気光学記録媒体 |
| JP2007265498A (ja) * | 2006-03-28 | 2007-10-11 | Hitachi Maxell Ltd | 情報記録媒体及び追記型情報記録装置 |
-
1980
- 1980-06-24 JP JP8561380A patent/JPS5712401A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5712401A (en) | 1982-01-22 |
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