JPS6417202A - Thin film electromagnet for impressing magnetic field for magneto-optical disk - Google Patents
Thin film electromagnet for impressing magnetic field for magneto-optical diskInfo
- Publication number
- JPS6417202A JPS6417202A JP17215087A JP17215087A JPS6417202A JP S6417202 A JPS6417202 A JP S6417202A JP 17215087 A JP17215087 A JP 17215087A JP 17215087 A JP17215087 A JP 17215087A JP S6417202 A JPS6417202 A JP S6417202A
- Authority
- JP
- Japan
- Prior art keywords
- thin film
- magnetic permeability
- high magnetic
- film high
- magneto
- 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
- 239000010409 thin film Substances 0.000 title abstract 12
- 239000000463 material Substances 0.000 abstract 8
- 230000035699 permeability Effects 0.000 abstract 7
- 230000004907 flux Effects 0.000 abstract 2
- 239000000758 substrate Substances 0.000 abstract 2
- 238000005530 etching Methods 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Landscapes
- Recording Or Reproducing By Magnetic Means (AREA)
Abstract
PURPOSE:To enable high-speed switching of large magnetic fields by forming three thin film high magnetic permeability materials on nonmagnetic substrates having many grooves orthogonal with a magnetic flux direction and providing thin film coils formed with two windings by pattern etching via an insulating layer thereon. CONSTITUTION:This electromagnet is constituted of the 2nd thin film high magnetic permeability material 2 which has the cylindrical thin film high magnetic permeability material 9 wound with the thin film coil 7 at one end, the 1st thin film high magnetic permeability material 1 which is installed to face said material via the thin film coil 7 and a magneto-optical disk held in place therebetween and has the spiral thin film coil 8 pattern-etched around a cylindrical hollow part 21 at one end, the 3rd thin film high magnetic permeability material 3 which magnetically couples the thin film high magnetic permeability materials 1 and 2 and a circuit 10 for modulating the current for generating the magnetic field which passes the same current to the coils 7 and 8. These three thin film high magnetic permeability materials 1-3 are formed on the nonmagnetic substrates 4-6 having the stripe grooves orthogonal with the magnetic flux direction. The high-speed switching of the large magnetic fields is thereby enabled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17215087A JPS6417202A (en) | 1987-07-09 | 1987-07-09 | Thin film electromagnet for impressing magnetic field for magneto-optical disk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17215087A JPS6417202A (en) | 1987-07-09 | 1987-07-09 | Thin film electromagnet for impressing magnetic field for magneto-optical disk |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6417202A true JPS6417202A (en) | 1989-01-20 |
| JPH0568764B2 JPH0568764B2 (en) | 1993-09-29 |
Family
ID=15936491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17215087A Granted JPS6417202A (en) | 1987-07-09 | 1987-07-09 | Thin film electromagnet for impressing magnetic field for magneto-optical disk |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6417202A (en) |
-
1987
- 1987-07-09 JP JP17215087A patent/JPS6417202A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0568764B2 (en) | 1993-09-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0645641B1 (en) | Improvements in or relating to MRI magnets | |
| CA1280207C (en) | Device for producing a high frequency modulation magnetic field usedin magneto-optical recording | |
| US4009460A (en) | Inductor | |
| DE3564052D1 (en) | Thin-film magnetic head on a non-magnetic substrate for perpendicular magnetization | |
| US4263523A (en) | Pulse generator using read head with Wiegand wire | |
| IE50917B1 (en) | A device for the multipolar magnetization of a material in strips | |
| DE3477077D1 (en) | Layer-built magnetic head for a recording medium to be perpendicularly magnetized | |
| US4306206A (en) | Linear solenoid device | |
| CA1157635A (en) | Method of manufacturing a pernament magnet which is to be arranged in an air gap of a transformer core | |
| KR890015306A (en) | Switching Mode Power Transformer | |
| GB2282451A (en) | Yoke MRI magnet with radially laminated pole-plates | |
| US4904971A (en) | Superconductive electromagnet | |
| JPS6413203A (en) | Thin film electromagnet impressing magnetic field for optical magnetic disk | |
| JPS6020234Y2 (en) | magnetic bubble memory package | |
| GB1424986A (en) | Electromagnetic device | |
| GB1178733A (en) | Magnetic Structures | |
| JPS643801A (en) | Magnetic field impressing electromagnet for magneto-optical disk | |
| JPS5687220A (en) | Vertical magnetization type magnetic head | |
| GB1237905A (en) | ||
| SU1065977A1 (en) | Compound excitation electric machine | |
| JP3032468B2 (en) | Magnetic circuit and non-reciprocal circuit device having temperature compensation structure | |
| JPH0454364B2 (en) | ||
| JPS58179921A (en) | Magnetic head | |
| JPS562605A (en) | Superconductive split magnet | |
| JPS5810333Y2 (en) | Denjishiyakunosekisougatatetsushin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |