The ac losses in YBa2Cu3O7 and Bi2Sr2Ca2Ci3O10 superconductors at power frequencies
Abstract
Ac losses of sintered and melt-textured YBa2Cu3O7 bars and powder-in-a-tube processed Bi2Sr2Ca2Cu3O10 tapes were measured at 4.2, 65, 70 and 77 K and at 15 to 180 Hz. In general, the results are well described by the critical state model for the ac losses. However, the losses for the Bi2Sr2Ca2Cu3O10 tapes at 4.2 K exhibited significant contributions from the eddy currents in the Ag sheath.
- Publication:
-
Presented at the 4th International Symposium on Superconductivity
- Pub Date:
- October 1991
- Bibcode:
- 1991suco.symp...14O
- Keywords:
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- Alternating Current;
- Current Density;
- Energy Dissipation;
- High Temperature Superconductors;
- Barium Oxides;
- Bismuth Oxides;
- Calcium Oxides;
- Copper Oxides;
- Strontium Compounds;
- Yttrium Oxides;
- Solid-State Physics