2212 bulk BSCCO under law intensity magnetic fields

Bulk sample of 2212 BSCCO was fabricated using conventional solid-state reaction technique. X-ray diffraction analysis reveals co-existence of 2201, 2212 and 2223 phases with a predominance of 2212 phase, indicating that the sample is more of a 2212 BSCCO superconductor. Electrical resistivity measurements as a function of temperature was made on the sample from 54K to 100K as it is immersed in varying low intensity fields: 0.0T, 0.03T, 0.05T, 0.07T, and 0.09T. The results showed a slight decrease in Tc from 81.3 (0.0T) to 79.29K (0.09T), and a broadening of transition width was also observed as the magnitude of the external magnetic field is increased from 0.0T to 0.09T. The results also displayed that the conductivity of the material is sensitive to slight change in the applied magnetic field. The broadening of the transition region of the superconducting mixed state is caused by electrical dissipation explained in terms of the thermally activated flux motion