ISSN:
1572-9605
Keywords:
Superconductors
;
highT c
;
critical currents
;
BSCCO
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
Abstract We have studied the electrical properties of polycrystalline pellets of the high-T c superconducting phases occurring in the Bi2O3-SrO-CaO-CuO (BSCCO) system, having nominal compositions Bi2Sr2Cu1O6+y, (2201 phase, withT c = 10 K.) Bi2Sr2CaCu2O8+y (2212 phase, withT c = 85 K), and Bi2Sr2Ca2Cu3O10+y (2223 phase, withT c = 110 K). Pellets containing the 2223 phase having zero resistance below 105 K were obtained. For the 2212 and 2223 phases, the transport critical current density was measured as a function of temperature and of the externally applied magnetic field. As previously found for YBa2Cu3O7-x (YBCO), results are consistent with the occurrence of a weak superconducting coupling among the grains. Such coupling was, however, noticeably stronger for the 2223 phase than for the 2212 phase.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00618525
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