GB8917685D0 - Over write capable magnetooptical recording medium with controlled exchange coupling force between layers - Google Patents
Over write capable magnetooptical recording medium with controlled exchange coupling force between layersInfo
- Publication number
- GB8917685D0 GB8917685D0 GB898917685A GB8917685A GB8917685D0 GB 8917685 D0 GB8917685 D0 GB 8917685D0 GB 898917685 A GB898917685 A GB 898917685A GB 8917685 A GB8917685 A GB 8917685A GB 8917685 D0 GB8917685 D0 GB 8917685D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- layers
- recording medium
- coupling force
- exchange coupling
- magnetooptical recording
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B11/00—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor
- G11B11/10—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field
- G11B11/105—Recording on or reproducing from the same record carrier wherein for these two operations the methods are covered by different main groups of groups G11B3/00 - G11B7/00 or by different subgroups of group G11B9/00; Record carriers therefor using recording by magnetic means or other means for magnetisation or demagnetisation of a record carrier, e.g. light induced spin magnetisation; Demagnetisation by thermal or stress means in the presence or not of an orienting magnetic field using a beam of light or a magnetic field for recording by change of magnetisation and a beam of light for reproducing, i.e. magneto-optical, e.g. light-induced thermomagnetic recording, spin magnetisation recording, Kerr or Faraday effect reproducing
- G11B11/10582—Record carriers characterised by the selection of the material or by the structure or form
- G11B11/10586—Record carriers characterised by the selection of the material or by the structure or form characterised by the selection of the material
- G11B11/10589—Details
- G11B11/10591—Details for improving write-in properties, e.g. Curie-point temperature
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63023357A JPH01199341A (en) | 1988-02-03 | 1988-02-03 | Overwritable magneto-optical recording medium which is controlled on overall exchange power between magnetic layers |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8917685D0 true GB8917685D0 (en) | 1989-09-20 |
| GB2234842A GB2234842A (en) | 1991-02-13 |
| GB2234842B GB2234842B (en) | 1993-11-03 |
Family
ID=12108321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8917685A Expired - Fee Related GB2234842B (en) | 1988-02-03 | 1989-08-02 | Over write capable magnetooptical recording medium with controlled exchange coupling force between layers |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPH01199341A (en) |
| DE (1) | DE3903248A1 (en) |
| GB (1) | GB2234842B (en) |
| IT (1) | IT1231793B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5233578A (en) * | 1988-12-28 | 1993-08-03 | Canon Kabushiki Kaisha | Method of recording information on a recording medium having at least two magnetic layers |
| FR2650692B1 (en) * | 1989-08-03 | 1994-09-16 | Nikon Corp | MAGNETO-OPTICAL RECORDING MEDIUM AUTHORIZING WRITE OVERLAY |
| GB9216074D0 (en) * | 1992-07-28 | 1992-09-09 | Johnson Matthey Plc | Magneto-optical recording materials system |
| US5546337A (en) * | 1994-01-31 | 1996-08-13 | Terastore, Inc. | Method and apparatus for storing data using spin-polarized electrons |
| US5446687A (en) * | 1994-01-31 | 1995-08-29 | Terastore, Inc. | Data storage medium for storing data as a polarization of a data magnetic field and method and apparatus using spin-polarized electrons for storing the data onto the data storage medium and reading the stored data therefrom |
| US6304481B1 (en) | 1994-01-31 | 2001-10-16 | Terastore, Inc. | Method and apparatus for storing data using spin-polarized electrons |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0282356B1 (en) * | 1987-03-13 | 1994-12-07 | Canon Kabushiki Kaisha | Magneto-optical recording medium and method |
-
1988
- 1988-02-03 JP JP63023357A patent/JPH01199341A/en active Pending
-
1989
- 1989-02-03 DE DE3903248A patent/DE3903248A1/en not_active Withdrawn
- 1989-08-02 GB GB8917685A patent/GB2234842B/en not_active Expired - Fee Related
- 1989-08-03 IT IT8948272A patent/IT1231793B/en active
Also Published As
| Publication number | Publication date |
|---|---|
| GB2234842A (en) | 1991-02-13 |
| IT1231793B (en) | 1992-01-14 |
| DE3903248A1 (en) | 1989-08-17 |
| JPH01199341A (en) | 1989-08-10 |
| GB2234842B (en) | 1993-11-03 |
| IT8948272A0 (en) | 1989-08-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19990802 |