Introduction of artificial pinning centres in Bi2Sr2CaCu2O8 ceramics
Conference
·
OSTI ID:135393
- Hoechst A.G., Frankfurt am Main (Germany)
Considering the phase equilibrium diagram of the system Bi203-SrO-CaO-CuO, single phase `Bi2Sr2CaCu208` ceramics have been transformed by a simple annealing procedure into multiphase samples. The transformation results in the formation of second phases and in an increase of the intra-grain critical current density at 1 T of five times. This increase is believed to express improved pinning properties of the superconducting crystals. The prepared pinning centers are believed to be e.g. coherent precipitates (Guinier-Preston-zones) within the superconducting crystals.
- Research Organization:
- Argonne National Lab., IL (United States)
- OSTI ID:
- 135393
- Report Number(s):
- N--96-10272; NASA-CP--3290-VOL-2; S--792-VOL-2; NAS--1.55:3290-VOL-2; CONF-940627--
- Country of Publication:
- United States
- Language:
- English
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