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Magnetic field dependence of shielding current density in Y-Ba-Cu-O rings at 77 K |
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| Authors: | M Polák M Majoro F Hanic J Pitel M Kedrová P Kottman J Talapa and L Vencel |
| Affiliation: | (1) Electrotechnical Institute, Center for Electrophysical Research, Slovak Academy of Sciences, Dubravska Cesta, 842 39 Bratislava, Czechoslovakia;(2) Institute of Inorganic Chemistry, Center for Chemical Research, Slovak Academy of Sciences, DÚbravská Cesta, 842 36 Bratislava, Czechoslovakia |
| Abstract: | A method for contactless measurement of the shielding critical current density and its dependence on the external magnetic field is described and analyzed. The obtained values are compared with those measured resistively on two different samples. It is shown that the shielding critical current densityJ cs and the intergranular transport current densityJ cr are identical if the measurement conditions are similar. A degradation ofJ cs measured in the external field with AC ripple has been observed. |
| Keywords: | Y-Ba-Cu-O shielding currents critical current density |
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