The effect of silver on the voltage-current characteristics of silver-sheathed PBSCCO superconducting tapes
1994; Elsevier BV; Volume: 229; Issue: 3-4 Linguagem: Inglês
10.1016/0921-4534(94)90524-x
ISSN1873-2143
AutoresDavid Matthews, K.‐H. Müller, C. Andrikidis, Huan Liu, Shi Xue Dou,
Tópico(s)Superconducting Materials and Applications
ResumoThe I-V characteristics of silver-sheathed PBSCCO tapes have been measured at 4.2 K and 77 K in magnetic inductions up to 1.7 T applied parallel to the c-axis of the tape. The silver has dramatic effects on the transport current which leads to a misrepresentation of the V-I characteristics of the superconductor. On correcting the data, linear log (V)-log (I) plots are obtained which are typical of a logarithmic pinning potential. The effect of the silver on the estimate of Ic has also been investigated and we have found that provided a small voltage criteria (<1μV) is used its effect can be neglected.
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