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Permanent magnets composed of high temperature superconductorsA study of persistent, trapped magnetic field has been pursued with high-temperature superconducting (HTS) materials. The main effort is to study the feasibility of utilization of HTS to fabricate magnets for various devices. The trapped field, when not in saturation, is proportional to the applied field. Thus, it should be possible to replicate complicated field configurations with melt-textured YBa2Cu3O7 (MT-Y123) material, bypassing the need for HTS wires. Presently, materials have been developed from which magnets of 1.5 T, at 77 K, can be fabricated. Much higher field is available at lower operating temperature. Stability of a few percent per year is readily attainable. Results of studies on prototype motors and minimagnets are reported.
Document ID
19920032351
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Weinstein, Roy
(Houston Univ. TX, United States)
Chen, In-Gann
(Houston Univ. TX, United States)
Liu, Jay
(Houston Univ. TX, United States)
Lau, Kwong
(Houston, University TX, United States)
Date Acquired
August 15, 2013
Publication Date
November 15, 1991
Publication Information
Publication: Journal of Applied Physics
Volume: 70
ISSN: 0021-8979
Subject Category
Electronics And Electrical Engineering
Accession Number
92A14975
Distribution Limits
Public
Copyright
Other

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