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Effect of permanent-magnet irregularities in levitation force measurements [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
14 pages : digital, PDF file
Additional Creators:
Argonne National Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
In the measurement of the levitation force between a vertically magnetized permanent magnet (PM) and a bulk high-temperature superconductor (HTS), PM domains with horizontal components of magnetization are shown to produce a nonnegligible contribution to the levitation force in most systems. Such domains are typically found in all PMs, even in those that exhibit zero net horizontal magnetic moment. Extension of this analysis leads to an HTS analog of Earnshaw's theorem, in which at the field-cooling position the vertical stiffness is equal to the sum of the horizontal stiffnesses, independent of angular distribution of magnetic moments within the PM.
Report Numbers:
E 1.99:anl/et/cp-100068
anl/et/cp-100068
Subject(s):
Other Subject(s):
Note:
Published through SciTech Connect.
10/14/1999.
"anl/et/cp-100068"
2nd International Workshop on the Processing and Applications of Superconducting (RE)BCO Large Grain Materials, Morioka (JP), 10/20/1999--10/22/1999.
Hull, J. R.
Funding Information:
W-31-109-ENG-38
View MARC record | catkey: 14449348