JPS6476512A - Magnetic reproducing head - Google Patents

Magnetic reproducing head

Info

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
Application number
JP62235157A
Other languages
Japanese (ja)
Inventor
Shigeo Sakagami
Misao Kato
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP62235157A priority Critical patent/JPS6476512A/en
Publication of JPS6476512A publication Critical patent/JPS6476512A/en
Pending legal-status Critical Current

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.
JP62235157A 1987-09-18 1987-09-18 Magnetic reproducing head Pending JPS6476512A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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