Influence of KMnO4 Substitution on the Structural and Transport Properties of Tl2Ba2Ca(Cu1-xRx)2Oδ+6 System

The effect of partial replacement of r = kmno4 in tl2ba2ca(cu1-xrx)2oδ+6 (tbcco or tl-2212) superconductor samples with x = 0.0,0.05 and 0.1 was investigated. the samples were prepared by standard solid-state reaction methods in a sealed quartz tube under normal pressure. the investigation consisted of x-ray diffraction (xrd) and dc electrical resistance measurements under fixed magnetic field. transport measurements indicated that the superconducting transition temperature values of the samples depend on the amount of the added kmno4. the values of tc and to of the samples decreased with increasing kmno4 content. the possible reasons for the observed degradation in the superconducting and microstructure properties of tl-2212 due to the addition of kmno4 were discussed. © penerbit universiti sains malaysia,2016.