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Quasipermanent magnets of high temperature superconductor - Temperature dependenceWe report on persistent field in quasi-permanent magnets of high temperature superconductors. Magnets composed of irradiated Y(1+)Ba2Cu3O7 trapped field Bt = 1.52 T at 77 K and 1.9 T at lower temperature. However, the activation magnet limited Bt at lower temperature. We present data on Jc(H,T) for unirradiated materials, and calculate Bt at various T. Based upon data at 65 K, we calculate Bt in unirradiated single grains at 20 K and find that 5.2 T will be trapped for grain diameter d about 1.2 cm, and 7.9 T for d = 2.3 cm. Irradiated grains will trap four times these values.
Document ID
19930062197
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Chen, In-Gann
(NASA Headquarters Washington, DC United States)
Liu, Jianxiong
(NASA Headquarters Washington, DC United States)
Ren, Yanru
(NASA Headquarters Washington, DC United States)
Weinstein, Roy
(Houston Univ. TX, United States)
Kozlowski, Gregory
(NASA Headquarters Washington, DC United States)
Oberly, Charles E.
(USAF, Wright Lab. Wright-Patterson AFB, OH, United States)
Date Acquired
August 16, 2013
Publication Date
June 21, 1993
Publication Information
Publication: Applied Physics Letters
Volume: 62
Issue: 25
ISSN: 0003-6951
Subject Category
Electronics And Electrical Engineering
Accession Number
93A46194
Distribution Limits
Public
Copyright
Other

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