GB1559299A - Device for close-packed magnetic domains - Google Patents
Device for close-packed magnetic domains Download PDFInfo
- Publication number
- GB1559299A GB1559299A GB33605/76A GB3360576A GB1559299A GB 1559299 A GB1559299 A GB 1559299A GB 33605/76 A GB33605/76 A GB 33605/76A GB 3360576 A GB3360576 A GB 3360576A GB 1559299 A GB1559299 A GB 1559299A
- Authority
- GB
- United Kingdom
- Prior art keywords
- domain
- magnetic
- domains
- shift register
- superposed
- 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
- 230000005381 magnetic domain Effects 0.000 title claims description 97
- 230000005291 magnetic effect Effects 0.000 claims description 93
- 239000000696 magnetic material Substances 0.000 claims description 47
- 239000004020 conductor Substances 0.000 claims description 39
- 238000000034 method Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 9
- 230000004913 activation Effects 0.000 claims description 7
- 230000006378 damage Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 7
- 230000003287 optical effect Effects 0.000 claims description 7
- 239000000758 substrate Substances 0.000 claims description 7
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000002940 repellent Effects 0.000 claims description 6
- 239000005871 repellent Substances 0.000 claims description 6
- 230000002459 sustained effect Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 230000003213 activating effect Effects 0.000 claims description 2
- 230000000295 complement effect Effects 0.000 claims description 2
- 230000001846 repelling effect Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 230000001747 exhibiting effect Effects 0.000 claims 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910000889 permalloy Inorganic materials 0.000 description 10
- 150000002500 ions Chemical class 0.000 description 8
- 238000006467 substitution reaction Methods 0.000 description 8
- 239000000463 material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- -1 yttrium ions Chemical class 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 239000002223 garnet Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052693 Europium Inorganic materials 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005290 antiferromagnetic effect Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005293 ferrimagnetic effect Effects 0.000 description 1
- 210000003918 fraction a Anatomy 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- MTRJKZUDDJZTLA-UHFFFAOYSA-N iron yttrium Chemical compound [Fe].[Y] MTRJKZUDDJZTLA-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000001552 radio frequency sputter deposition Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
Classifications
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
- G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
- G11C19/0858—Generating, replicating or annihilating magnetic domains (also comprising different types of magnetic domains, e.g. "Hard Bubbles")
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
- G11C11/02—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements
- G11C11/14—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using magnetic elements using thin-film elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C13/00—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00
- G11C13/04—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam
- G11C13/06—Digital stores characterised by the use of storage elements not covered by groups G11C11/00, G11C23/00, or G11C25/00 using optical elements ; using other beam accessed elements, e.g. electron or ion beam using magneto-optical elements
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
- G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
- G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
- G11C19/0808—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation
- G11C19/0816—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation using a rotating or alternating coplanar magnetic field
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
- G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
- G11C19/0808—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation
- G11C19/0833—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation using magnetic domain interaction
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
- G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
- G11C19/0808—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation
- G11C19/0841—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure using magnetic domain propagation using electric current
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
- G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
- G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
- G11C19/0866—Detecting magnetic domains
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/45—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices
- H03K3/455—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices using thin films
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Hall/Mr Elements (AREA)
- Thin Magnetic Films (AREA)
- Mram Or Spin Memory Techniques (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL7509733A NL7509733A (nl) | 1975-08-15 | 1975-08-15 | Inrichting voor magnetische domeinen volgens een dichte pakking. |
| US71294876A | 1976-08-09 | 1976-08-09 | |
| US05/919,466 US4218762A (en) | 1975-08-15 | 1978-06-27 | Device for close-packed magnetic domains |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1559299A true GB1559299A (en) | 1980-01-16 |
Family
ID=27351978
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB33605/76A Expired GB1559299A (en) | 1975-08-15 | 1976-08-12 | Device for close-packed magnetic domains |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US4218762A (enExample) |
| JP (1) | JPS5237732A (enExample) |
| BE (1) | BE845198A (enExample) |
| CA (1) | CA1083712A (enExample) |
| DE (1) | DE2635603A1 (enExample) |
| FR (1) | FR2321172A1 (enExample) |
| GB (1) | GB1559299A (enExample) |
| NL (1) | NL7509733A (enExample) |
| SE (1) | SE411969B (enExample) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL7905543A (nl) * | 1979-07-17 | 1981-01-20 | Philips Nv | Geheugen met stroombestuurde serie/parallelomzetting van magnetische beldomeinen. |
| NL8102284A (nl) * | 1981-05-11 | 1982-12-01 | Philips Nv | Stroombestuurd magnetisch domein geheugen. |
| DE3139487A1 (de) * | 1981-10-03 | 1983-04-21 | Philips Patentverwaltung Gmbh, 2000 Hamburg | "verfahren zum herstellen einer magnetischen speicherschicht" |
| US5978135A (en) * | 1999-05-03 | 1999-11-02 | Lucent Technologies Inc. | Article comprising a variable optical attenuator |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3996571A (en) * | 1974-03-08 | 1976-12-07 | International Business Machines Corporation | Double layer bubble domain lattice system |
| US4151602A (en) * | 1975-04-02 | 1979-04-24 | U.S. Philips Corporation | Magnetic bubble multilayer arrangement |
-
1975
- 1975-08-15 NL NL7509733A patent/NL7509733A/xx unknown
-
1976
- 1976-08-07 DE DE19762635603 patent/DE2635603A1/de not_active Withdrawn
- 1976-08-11 CA CA258,885A patent/CA1083712A/en not_active Expired
- 1976-08-12 GB GB33605/76A patent/GB1559299A/en not_active Expired
- 1976-08-12 SE SE7609005A patent/SE411969B/xx unknown
- 1976-08-13 BE BE169822A patent/BE845198A/xx unknown
- 1976-08-13 FR FR7624772A patent/FR2321172A1/fr active Granted
- 1976-08-16 JP JP51097152A patent/JPS5237732A/ja active Granted
-
1978
- 1978-06-27 US US05/919,466 patent/US4218762A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| SE411969B (sv) | 1980-02-11 |
| BE845198A (fr) | 1977-02-14 |
| NL7509733A (nl) | 1977-02-17 |
| SE7609005L (sv) | 1977-02-16 |
| JPS5718273B2 (enExample) | 1982-04-15 |
| FR2321172B1 (enExample) | 1979-06-29 |
| CA1083712A (en) | 1980-08-12 |
| DE2635603A1 (de) | 1977-02-17 |
| JPS5237732A (en) | 1977-03-23 |
| FR2321172A1 (fr) | 1977-03-11 |
| US4218762A (en) | 1980-08-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |