Abstract
The temperature dependence of the decay of persistent current flowing in YBCO and BSCCO ring, is experimentally studied. Among a temperature range from 4K to 89K, the persistent current shows a slow decay at low temperature. However, the current of sintered YBCO at 77K shows a fast decay. In case of melt-textured YBCO and sintered BSCCO, the current decays slowly in any temperatures. Almost all decays can be roughly expressed as straight line in log J vs t plot where J and t are the current and time respectively. This is an exponential decay and not be described by a classical flux creep model. However, the decays play a complex mode at a temperature, near Tc, both in YBCO and BSCCO.
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© 1995 Springer-Verlag Tokyo
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Masuda, M., Kojima, S., Nemoto, T. (1995). Persistency of Superconducting Current in YBCO(123) and BSCCO(2212). In: Yamafuji, K., Morishita, T. (eds) Advances in Superconductivity VII. Springer, Tokyo. https://doi.org/10.1007/978-4-431-68535-7_122
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DOI: https://doi.org/10.1007/978-4-431-68535-7_122
Publisher Name: Springer, Tokyo
Print ISBN: 978-4-431-68537-1
Online ISBN: 978-4-431-68535-7
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