Abstract
Polycrystalline sintered specimens of YBa2Cu307 with densities up to 95% and resistivities as low as 150 μΩcm at 100 K were investigated by means of ac susceptibility, resistivity and inductive critical current measurements. The tremendous increase of the transition width in an applied field observed by ac susceptibility measurements is attributed to the anisotropy of the upper critical field of the intragrain material and to the intergrain weak links which become superconducting at different fields and temperatures. The screening and loss behavior of the inter- and intragrain current system determines the ac susceptibility from which weak link properties are obtained by comparison of various specimens prepared following different procedures.
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Küpfer, H. et al. (1988). AC Susceptibility and Inductive Critical Current Measurements in Polycrystalline YBa2Cu307 . In: Weber, H.W. (eds) High-T c Superconductors. Springer, Boston, MA. https://doi.org/10.1007/978-1-4899-0846-9_39
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DOI: https://doi.org/10.1007/978-1-4899-0846-9_39
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