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Magnetic flux diffusion through HTS shields
Wong, Kai-Wai Fan, C. X. Havenhill, A. D.
Wong, Kai-Wai
Fan, C. X.
Havenhill, A. D.
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Abstract
Slow field leakage in a polycrystalline superconducting cupshield placed in an external axial field (H-ext) much weaker than H-C1 shows a diffusive time dependence with a time scale of 10(2) s. As the field strength increases but is still less than H-C1, a logarithmic time dependence of 10(2) s time scale is observed. It is shown that this logarithmic time dependence is a result of flux line diffusion between superconducting grains rather than fluxoid avalanches or flux bundle creep.
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Date
1998-06
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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00678443.76.pdf
Adobe PDF, 147.73 KB
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Keywords
Engineering, Electrical & Electronic; Physics, Applied
Citation
Havenhill, AD; Wong, KW; Fan, CX. Magnetic flux diffusion through HTS shields. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY. June 1998. 8(2): 62-68.