JPS64712A - Permanent magnet - Google Patents

Permanent magnet

Info

Publication number
JPS64712A
JPS64712A JP15436187A JP15436187A JPS64712A JP S64712 A JPS64712 A JP S64712A JP 15436187 A JP15436187 A JP 15436187A JP 15436187 A JP15436187 A JP 15436187A JP S64712 A JPS64712 A JP S64712A
Authority
JP
Japan
Prior art keywords
magnetic flux
permanent magnet
perovskite structure
superconductor
rare
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
JP15436187A
Other languages
Japanese (ja)
Other versions
JPH01712A (en
Inventor
Koichiro Inomata
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP62-154361A priority Critical patent/JPH01712A/en
Priority claimed from JP62-154361A external-priority patent/JPH01712A/en
Publication of JPS64712A publication Critical patent/JPS64712A/en
Publication of JPH01712A publication Critical patent/JPH01712A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To generate magnetic flux effectively in required space by forming a superconductor film to one part of the surface.
CONSTITUTION: Regions except the surfaces utilized for extracting magnetic flux are coated with superconductor films 2. Various magnets of a ferrite system, a rare-earth cobalt system, a rare-earth iron system etc., are used as a permanent magnet 1. An Ln element (Ln represents at least one kind of Y, La, Sc, Nd, Sm, Eu, Gd, Dy, Ho, Er, Tm, Yb, and Lu), an AE element (at least one kind of Ba, Ca and Sr) and an oxide superconductor containing Cu and having perovskite structure are particularly effective. Oxygen defect type perovskite structure in LnBa2Cu3O7-δ (δ normally extends over 1 or less) containing Ln, AE and Cu at the ratio of substantially 1:2:3 at an atomic ratio and having an oxygen defect δ is employed as said perovskite structure. Thickness where magnetic flux can be confined approximately by a Meissner effect is sufficient as the thickness of the superconductor film 2 shaped onto the surface of the permanent magnet 1, and normally extends over 2000Å or more.
COPYRIGHT: (C)1989,JPO&Japio
JP62-154361A 1987-06-23 permanent magnet Pending JPH01712A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-154361A JPH01712A (en) 1987-06-23 permanent magnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-154361A JPH01712A (en) 1987-06-23 permanent magnet

Publications (2)

Publication Number Publication Date
JPS64712A true JPS64712A (en) 1989-01-05
JPH01712A JPH01712A (en) 1989-01-05

Family

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