Pinning in BSCCO superconductors
Book
·
OSTI ID:43019
- Max-Planck-Inst. fuer Metallforschung, Stuttgart (Germany). Inst. fuer Werkstoffwissenschaft
- Hoechst AG, Frankfurt am Main (Germany). Corporate Research
Considering the phase equilibrium diagram of the system (Bi{sub 2}O{sub 3},PbO)-SrO-CaO-CuO, single phase ceramics of the 2212 and 2223 phase with the composition Bi{sub 2.18}Sr{sub 1.75}Ca{sub 1.25}Cu{sub 2}O{sub 8+d}, Bi{sub 2.3}Sr{sub 2}CaCu{sub 2}O{sub 8+d} and Bi{sub 1.8}Pb{sub 0.4}Sr{sub 2}Ca{sub 2.2}Cu{sub 3}O{sub 10+d} have been transformed by a simple annealing procedure into multi phase samples. The transformation results in the formation of secondary phases and in an increase of the critical current density at 1 T of five to ten times (2212) and at 2 T of three times (2223). These increases are believed to express improved pinning properties of these ceramics. The nature of the produced pinning centers is not clarified yet.
- OSTI ID:
- 43019
- Report Number(s):
- CONF-9310224--; ISBN 0-87339-271-X
- Country of Publication:
- United States
- Language:
- English
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