DE2040278A1 - Magnetschichtspeicher - Google Patents
MagnetschichtspeicherInfo
- Publication number
- DE2040278A1 DE2040278A1 DE19702040278 DE2040278A DE2040278A1 DE 2040278 A1 DE2040278 A1 DE 2040278A1 DE 19702040278 DE19702040278 DE 19702040278 DE 2040278 A DE2040278 A DE 2040278A DE 2040278 A1 DE2040278 A1 DE 2040278A1
- Authority
- DE
- Germany
- Prior art keywords
- magnetic layer
- temperature
- magnetic
- magnetization
- phase
- 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.)
- Pending
Links
- 230000005291 magnetic effect Effects 0.000 title claims description 109
- 238000003860 storage Methods 0.000 title description 8
- 230000005415 magnetization Effects 0.000 claims description 35
- 239000000463 material Substances 0.000 claims description 35
- 229910001152 Bi alloy Inorganic materials 0.000 claims description 20
- KYAZRUPZRJALEP-UHFFFAOYSA-N bismuth manganese Chemical compound [Mn].[Bi] KYAZRUPZRJALEP-UHFFFAOYSA-N 0.000 claims description 20
- 230000015654 memory Effects 0.000 claims description 17
- 230000001419 dependent effect Effects 0.000 claims description 5
- 238000010894 electron beam technology Methods 0.000 claims description 3
- 238000011156 evaluation Methods 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 1
- 229910045601 alloy Inorganic materials 0.000 description 11
- 239000000956 alloy Substances 0.000 description 11
- 239000000696 magnetic material Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 230000010287 polarization Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 230000002238 attenuated effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000005294 ferromagnetic effect Effects 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000000171 quenching effect Effects 0.000 description 3
- 229910000967 As alloy Inorganic materials 0.000 description 2
- UIFOTCALDQIDTI-UHFFFAOYSA-N arsanylidynenickel Chemical compound [As]#[Ni] UIFOTCALDQIDTI-UHFFFAOYSA-N 0.000 description 2
- 230000006399 behavior Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000012217 deletion Methods 0.000 description 2
- 230000037430 deletion Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910016629 MnBi Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001683 neutron diffraction Methods 0.000 description 1
- 230000005298 paramagnetic effect Effects 0.000 description 1
- 230000002829 reductive effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- G11B11/10532—Heads
- G11B11/10534—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording
- G11B11/10536—Heads for recording by magnetising, demagnetising or transfer of magnetisation, by radiation, e.g. for thermomagnetic recording using thermic beams, e.g. lasers
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G5/00—Recording members for original recording by exposure, e.g. to light, to heat, to electrons; Manufacture thereof; Selection of materials therefor
- G03G5/16—Layers for recording by changing the magnetic properties, e.g. for Curie-point-writing
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Hard Magnetic Materials (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US85057169A | 1969-08-15 | 1969-08-15 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2040278A1 true DE2040278A1 (de) | 1971-02-18 |
Family
ID=25308518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19702040278 Pending DE2040278A1 (de) | 1969-08-15 | 1970-08-13 | Magnetschichtspeicher |
Country Status (5)
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3778791A (en) * | 1971-10-06 | 1973-12-11 | Nasa | Thermomagnetic recording and magneto-optic playback system having constant intensity laser beam control |
| US3949387A (en) * | 1972-08-29 | 1976-04-06 | International Business Machines Corporation | Beam addressable film using amorphous magnetic material |
| US3786452A (en) * | 1972-09-28 | 1974-01-15 | Bell Telephone Labor Inc | Single wall domain generator |
| US4101947A (en) * | 1976-10-04 | 1978-07-18 | Eastman Kodak Company | Narrow track magnetic-head recorder |
| US4424580A (en) * | 1981-05-06 | 1984-01-03 | Precision Echo | Method and apparatus for generating electron spin reversal in ferrimagnetic material |
| CA1212757A (en) * | 1982-09-25 | 1986-10-14 | Tsutomu Okamoto | Thermomagnetic recording method |
| US4962492A (en) * | 1988-04-29 | 1990-10-09 | Laser Magnetic Storage International Company | Magneto-optic data recording system, actuating device therefor and method of providing same |
| JP2612966B2 (ja) * | 1990-04-13 | 1997-05-21 | インターナショナル・ビジネス・マシーンズ・コーポレーション | 無定形ウラニウム合金、それを用いた光磁気記憶媒体および光磁気記憶システム |
| US5239504A (en) * | 1991-04-12 | 1993-08-24 | International Business Machines Corporation | Magnetostrictive/electrostrictive thin film memory |
| US5534360A (en) * | 1991-12-13 | 1996-07-09 | International Business Machines Corporation | Amorphous uranium alloy and use thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3189493A (en) * | 1961-08-14 | 1965-06-15 | Westinghouse Electric Corp | Processes for producing ductile cobaltiron-vandium magnetic alloys |
| US3368209A (en) * | 1964-10-22 | 1968-02-06 | Honeywell Inc | Laser actuated curie point recording and readout system |
-
1969
- 1969-08-15 US US850571A patent/US3624622A/en not_active Expired - Lifetime
-
1970
- 1970-05-20 GB GB1298009D patent/GB1298009A/en not_active Expired
- 1970-07-10 FR FR7025845A patent/FR2058296B1/fr not_active Expired
- 1970-07-16 JP JP45061842A patent/JPS5040743B1/ja active Pending
- 1970-08-13 DE DE19702040278 patent/DE2040278A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1298009A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1972-11-29 |
| FR2058296A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1971-05-28 |
| FR2058296B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1976-03-19 |
| JPS5040743B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1975-12-26 |
| US3624622A (en) | 1971-11-30 |
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