JPS6476512A - Magnetic reproducing head - Google Patents
Magnetic reproducing headInfo
- Publication number
- JPS6476512A JPS6476512A JP62235157A JP23515787A JPS6476512A JP S6476512 A JPS6476512 A JP S6476512A JP 62235157 A JP62235157 A JP 62235157A JP 23515787 A JP23515787 A JP 23515787A JP S6476512 A JPS6476512 A JP S6476512A
- Authority
- JP
- Japan
- Prior art keywords
- josephson junction
- magnetic
- current
- boundary
- recording medium
- 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
Landscapes
- Measuring Magnetic Variables (AREA)
- Superconductor Devices And Manufacturing Methods Thereof (AREA)
Abstract
PURPOSE:To reproduce a magnetic recording signal with ultra high density at ultra high speed without making a head bring into contact with a recording medium by arranging Josephson junction so that its joint plane can be set perpendicularly to the surface of the recording medium, and detecting potential difference between both ends of the junction by supplying AC current. CONSTITUTION:Both insulator thin films 3 sandwiched by superconductors 1 and 2 form the Josephson junction, and also, a current source 4 which supplies the AC current to the Josephson junction and a voltage detecting means 5 are provided. At this time, the direction of leakage flux is set in parallel with the surface of a magnetic recording medium 6 at the boundary of a magnetic domain 7, and the magnetic flux in a parallel direction to invade to the insulating thin film disappears only at the boundary of the magnetic domain 7 by being disturbed by the superconductors 1 and 2. In such a way, the boundary of the magnetic domain can be detected by the fact that the potential difference at both ends of the Josephson junction goes to zero at the time of setting the magnetic flux to invade to the film at zero, and a signal is reproduced at the double speed of the frequency of the AC current to be supplied to the Josephson junction, and also, it is possible to perform reproduction without generating the contact of the head with the medium.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235157A JPS6476512A (en) | 1987-09-18 | 1987-09-18 | Magnetic reproducing head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62235157A JPS6476512A (en) | 1987-09-18 | 1987-09-18 | Magnetic reproducing head |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6476512A true JPS6476512A (en) | 1989-03-22 |
Family
ID=16981894
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62235157A Pending JPS6476512A (en) | 1987-09-18 | 1987-09-18 | Magnetic reproducing head |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6476512A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009019854A (en) * | 2007-07-13 | 2009-01-29 | T Rad Co Ltd | Connecting structure of module type heat exchanger |
-
1987
- 1987-09-18 JP JP62235157A patent/JPS6476512A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009019854A (en) * | 2007-07-13 | 2009-01-29 | T Rad Co Ltd | Connecting structure of module type heat exchanger |
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