JPH0522303B2 - - Google Patents
Info
- Publication number
- JPH0522303B2 JPH0522303B2 JP62153108A JP15310887A JPH0522303B2 JP H0522303 B2 JPH0522303 B2 JP H0522303B2 JP 62153108 A JP62153108 A JP 62153108A JP 15310887 A JP15310887 A JP 15310887A JP H0522303 B2 JPH0522303 B2 JP H0522303B2
- Authority
- JP
- Japan
- Prior art keywords
- magnetic layer
- magnetic
- magnetization
- recording
- temperature
- 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 - Fee Related
Links
- 239000010410 layer Substances 0.000 description 222
- 230000005415 magnetization Effects 0.000 description 102
- 239000000758 substrate Substances 0.000 description 57
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 39
- 239000010408 film Substances 0.000 description 36
- 239000000203 mixture Substances 0.000 description 36
- 229910052761 rare earth metal Inorganic materials 0.000 description 33
- 238000004544 sputter deposition Methods 0.000 description 24
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 22
- 229910052723 transition metal Inorganic materials 0.000 description 22
- 238000000034 method Methods 0.000 description 20
- 239000000463 material Substances 0.000 description 18
- 229910045601 alloy Inorganic materials 0.000 description 12
- 239000000956 alloy Substances 0.000 description 12
- 230000007423 decrease Effects 0.000 description 12
- 229910052786 argon Inorganic materials 0.000 description 11
- 230000008859 change Effects 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 9
- 150000003624 transition metals Chemical class 0.000 description 6
- 229910052771 Terbium Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 150000002910 rare earth metals Chemical class 0.000 description 5
- 229910052688 Gadolinium Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000010030 laminating Methods 0.000 description 4
- 229920000515 polycarbonate Polymers 0.000 description 4
- 239000004417 polycarbonate Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 239000011241 protective layer Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000001747 exhibiting effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000001678 irradiating effect Effects 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- 239000004831 Hot glue Substances 0.000 description 2
- 239000012790 adhesive layer Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000008707 rearrangement Effects 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 230000005374 Kerr effect Effects 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- FHKPLLOSJHHKNU-INIZCTEOSA-N [(3S)-3-[8-(1-ethyl-5-methylpyrazol-4-yl)-9-methylpurin-6-yl]oxypyrrolidin-1-yl]-(oxan-4-yl)methanone Chemical compound C(C)N1N=CC(=C1C)C=1N(C2=NC=NC(=C2N=1)O[C@@H]1CN(CC1)C(=O)C1CCOCC1)C FHKPLLOSJHHKNU-INIZCTEOSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001004 magnetic alloy Inorganic materials 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62153108A JPS63316343A (ja) | 1987-06-18 | 1987-06-18 | 光磁気記録媒体 |
AU75306/87A AU593364C (en) | 1986-07-08 | 1987-07-07 | Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same |
EP98200007A EP0838815B1 (de) | 1986-07-08 | 1987-07-08 | Gerät und System zur Aufzeichnung auf einem magnetooptischen Aufzeichnungsmedium |
EP87306038A EP0258978B1 (de) | 1986-07-08 | 1987-07-08 | Magnetoptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode |
KR1019870007322A KR960003420B1 (ko) | 1986-07-08 | 1987-07-08 | 2층이상의 자성막을 가지고 중복기록이 가능한 광자기 기록매체 및 그의 매체를 사용한 기록방법 |
AT87306038T ATE172047T1 (de) | 1986-07-08 | 1987-07-08 | Magnetoptisches aufzeichnungsmedium mit der möglichkeit des überschreibens mit zwei oder mehr magnetschichten und dieses medium verwendende aufzeichnungsmethode |
DE3752222T DE3752222T2 (de) | 1986-07-08 | 1987-07-08 | Magnetoptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode |
EP98200006A EP0838814B1 (de) | 1986-07-08 | 1987-07-08 | Magnetooptisches Aufzeichnungsmedium mit der Möglichkeit des Überschreibens mit zwei oder mehr Magnetschichten und dieses Medium verwendende Aufzeichnungsmethode |
AT98200007T ATE216528T1 (de) | 1986-07-08 | 1987-07-08 | Gerät und system zur aufzeichnung auf einem magnetooptischen aufzeichnungsmedium |
US07/475,941 US5132945A (en) | 1986-07-08 | 1990-01-30 | Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same |
US08/296,163 US5525378A (en) | 1986-07-08 | 1994-08-26 | Method for producing a magnetooptical recording medium |
US08/312,930 US5481410A (en) | 1986-07-08 | 1994-09-30 | Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same |
US08/613,431 US5783300A (en) | 1986-06-18 | 1996-02-29 | Magnetooptical recording medium allowing overwriting with two or more magnetic layers and recording method utilizing the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62153108A JPS63316343A (ja) | 1987-06-18 | 1987-06-18 | 光磁気記録媒体 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63316343A JPS63316343A (ja) | 1988-12-23 |
JPH0522303B2 true JPH0522303B2 (de) | 1993-03-29 |
Family
ID=15555146
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62153108A Granted JPS63316343A (ja) | 1986-06-18 | 1987-06-18 | 光磁気記録媒体 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS63316343A (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4405850A1 (de) * | 1993-02-25 | 1994-09-01 | Sharp Kk | Magneto-optisches Aufzeichnungsmedium |
DE19517512A1 (de) * | 1994-05-24 | 1995-11-30 | Sharp Kk | Magnetooptisches Aufzeichnungsmedium und Aufzeichnungsverfahren sowie Abspielverfahren unter Verwendung eines solchen |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2797360B2 (ja) * | 1989-01-13 | 1998-09-17 | ソニー株式会社 | 光磁気記録方法 |
CA1326547C (en) * | 1988-07-13 | 1994-01-25 | Masahiko Kaneko | Thermomagnetic recording method |
JP2829970B2 (ja) * | 1988-07-13 | 1998-12-02 | ソニー株式会社 | 熱磁気記録媒体 |
JP2714085B2 (ja) * | 1988-12-28 | 1998-02-16 | キヤノン株式会社 | 情報記録方法 |
JPH0395745A (ja) * | 1989-09-06 | 1991-04-22 | Canon Inc | 光磁気記録方法及び記録装置 |
JP3192281B2 (ja) * | 1993-06-21 | 2001-07-23 | シャープ株式会社 | 光磁気記録媒体の記録方法 |
JP2809991B2 (ja) | 1994-01-14 | 1998-10-15 | 富士通株式会社 | 光磁気記録媒体及び該媒体に記録された情報の再生方法 |
US5663935A (en) * | 1995-02-08 | 1997-09-02 | Canon Kabushiki Kaisha | Magneto-optical recording medium having two magnetic layers of exchange-coupled at ferromagnetic phase |
JPH09231630A (ja) * | 1996-02-22 | 1997-09-05 | Sharp Corp | 光磁気記録媒体 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60125903A (ja) * | 1983-12-09 | 1985-07-05 | Sony Corp | 熱磁気光記録方式 |
JPS60212850A (ja) * | 1984-04-09 | 1985-10-25 | Matsushita Electric Ind Co Ltd | 光磁気デイスク |
JPS6154059A (ja) * | 1984-08-24 | 1986-03-18 | Hitachi Ltd | 磁気光学記録膜 |
DE3619618A1 (de) * | 1985-06-11 | 1986-12-11 | Nippon Kogaku K.K., Tokio/Tokyo | Magnetooptisches aufzeichnungsverfahren mit ueberschreibmoeglichkeit, magnetooptische aufzeichnungsvorrichtung und dazugehoeriger aufzeichnungstraeger |
-
1987
- 1987-06-18 JP JP62153108A patent/JPS63316343A/ja active Granted
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60125903A (ja) * | 1983-12-09 | 1985-07-05 | Sony Corp | 熱磁気光記録方式 |
JPS60212850A (ja) * | 1984-04-09 | 1985-10-25 | Matsushita Electric Ind Co Ltd | 光磁気デイスク |
JPS6154059A (ja) * | 1984-08-24 | 1986-03-18 | Hitachi Ltd | 磁気光学記録膜 |
DE3619618A1 (de) * | 1985-06-11 | 1986-12-11 | Nippon Kogaku K.K., Tokio/Tokyo | Magnetooptisches aufzeichnungsverfahren mit ueberschreibmoeglichkeit, magnetooptische aufzeichnungsvorrichtung und dazugehoeriger aufzeichnungstraeger |
JPS62175948A (ja) * | 1985-06-11 | 1987-08-01 | Nippon Kogaku Kk <Nikon> | オーバーライト可能な光磁気記録方法、それに使用される光磁気記録装置及び光磁気記録媒体、並びに変調方法、変調装置及び光磁気記録媒体 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4405850A1 (de) * | 1993-02-25 | 1994-09-01 | Sharp Kk | Magneto-optisches Aufzeichnungsmedium |
DE19517512A1 (de) * | 1994-05-24 | 1995-11-30 | Sharp Kk | Magnetooptisches Aufzeichnungsmedium und Aufzeichnungsverfahren sowie Abspielverfahren unter Verwendung eines solchen |
US5683803A (en) * | 1994-05-24 | 1997-11-04 | Sharp Kabushiki Kaisha | Magneto-optical recording medium and method of recording and reproducing using the same |
Also Published As
Publication number | Publication date |
---|---|
JPS63316343A (ja) | 1988-12-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPH0522303B2 (de) | ||
JPH0535499B2 (de) | ||
KR940001452B1 (ko) | 광자기 기록매체 및 이를 사용한 광자기 기록재생장치 | |
JP2703587B2 (ja) | 光磁気記録媒体および記録方法 | |
JPH0395745A (ja) | 光磁気記録方法及び記録装置 | |
JPH0535494B2 (de) | ||
JPH0542062B2 (de) | ||
JPH0522301B2 (de) | ||
JP3092363B2 (ja) | 光磁気記録媒体 | |
JP2001134994A (ja) | 光磁気記録媒体及びその記録方法 | |
JP2674815B2 (ja) | 光磁気記録方法 | |
JPH0535498B2 (de) | ||
JPH0522302B2 (de) | ||
JP3126459B2 (ja) | 光磁気記録方法および光磁気記録装置 | |
JPH0535493B2 (de) | ||
JPH0535496B2 (de) | ||
KR930010474B1 (ko) | 광자기 기록매체 및 광자기 기록매체의 제조방법 | |
JPH11238264A (ja) | 光磁気記録媒体及びその再生方法 | |
JP2815034B2 (ja) | 光磁気記録媒体の製造方法 | |
JPH08221823A (ja) | 光磁気記録媒体およびこれを用いた光磁気記録再生装置 | |
JP2000339788A (ja) | 光磁気記録媒体及びその再生方法 | |
JPH0535495B2 (de) | ||
JPH05182267A (ja) | 光磁気記録媒体およびその記録方法 | |
JPS63133337A (ja) | 光磁気記録方法 | |
JP2001176140A (ja) | 光磁気記録媒体及びその記録再生方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |