Transport properties of textured Bi2Sr2CaCu2O8+y, thin films |
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| Authors: | G Balestrino M Cannavacciuolo R Di Leo L Maritato A Nigro P Romano R Vaglio and P Paroli |
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| Affiliation: | (1) Dipartimento di Fisica, Universitá di Salerno, Via provinciale Baronissi-Penta, I-84081 Baronissi, Salerno, Italy;(2) Dipartimento di Ingegneria Meccanica, II Universitá di Roma, Via O. Raimondo, I-00173 Roma, Italy |
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| Abstract: | Superconducting films of the high-T
c
compound Bi2Sr2CaCu2O8+y
, have been grown on (111)-oriented gadolinium gallium garnet substrates by a liquid-phase technique. The films show a very high degree of preferential orientation with thec-axis perpendicular to the substrates. The onset of the resistive transition was 85 K while zero resistance was obtained at 78 K. Results concerning the critical current properties of the films are described. Measurements of the paraconductivity effects on the electrical resistivity above the superconducting transition due to thermodynamic fluctuations are also reported.Supported by Ansaldo S.p.A Divisione Ansaldo Ricerche, Via Corso Perrone 25, I-16100 Genova, Italy. |
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| Keywords: | Superconducting films Bi2Sr2CaCu2O8+y
liquid-phase growth critical current fluctuations |
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