Synthesis and characterization of superconductor composite Bi2Sr2Ca1Cu2O8/La0.85Sr0.15MnO3

Abstract

Superconductor Bi2Sr2Ca1Cu2O8 is prepared by solid state route and the substituent element La0.85Sr0.15MnO3 is prepared by sol-gel combustion route. Then the composite of BSCCO(2212) with LSMO having different composition are prepared by solid state route. X-ray diffraction of BSCCO(2212) sintered at 8800C for 12hrs and LSMO sintered at 8200C for 5hrs are taken.The sharp and well defined peak of both BSCCO (2212)and LSMO is observed which shows the presence of the single phase having crystal structure tetragonal (a = 3.82 Å, b = 3.82 Å & c = 30.60 Å) and monoclinic (a = 5.48Å, b = 5.53 Å & c = 7.79 Å) for for BSCCO(2212) and LSMO respectively. In XRD pattern of compisites, some extra peaks are also observed. SEM analysisis done to know the morphology of BSCCO(2212) and its composites. EDXS analysis revels exact constituent of the different element free from the other element. Resistivity vs temperature measurement is done for all the sample. The Tc of the sample was found to be 74.91K and for the other composition of LSMO added BSCCO(2212) the Tc value gradually decreases which indicates the decrement in the transition peak and the disorderness of the sample.