Voltage-current characteristics of polycrystalline (Bi,Pb)(2)Sr2Ca2Cu3O10 superconductor at different magnetic fields and temperatures

Albiss B., Bocuk H., Gasanly N., Ozkan H.

JOURNAL OF LOW TEMPERATURE PHYSICS, vol.105, pp.957-962, 1996 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 105
  • Publication Date: 1996
  • Doi Number: 10.1007/bf00768506
  • Journal Name: JOURNAL OF LOW TEMPERATURE PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.957-962
  • Middle East Technical University Affiliated: Yes

Abstract

The voltage-current characteristics of polycrystalline (Bi,Pb)(2)Sr2Ca2Cu3O10 superconductor were investigated at temperatures from 80 to 105 K under magnetic field up to 0.4 T. In magnetic field considerable broadening in the transition width occurs which depends on the processing conditions and microstructure of the sample. I-V data below T-c were fitted to a power law expression V similar to I-beta to obtain beta. We have found that beta decreases rather rapidly with increase of magnetic field and temperature, in low magnetic fields and at temperatures quite below T-c, respectively. Similar behavior was observed for the variation of the critical current as a function of temperature and magnetic field. The beta values are found to change linearly as a function of critical current at relatively law values of I-c.