Flux pinning mechanism in bi-2223 superconductorwith addition of barium / Anis Zafirah Mohd Ismail

The effect of Barium addition of flux pinning properties have been studied. The samples were prepared by solid state reaction method. The characterizations was carried out using four-point probe and X-ray powder diffraction (XRD). XRD pattern show a lot of improvement of the peak since the low-peak (2212) has decreased with the increase of Barium content. The effect of addition of Barium element in the calcium site can be deducted that the Tc and Jc gradually increased as x which dopant concentration is increased. The crystallographic structure underwent transition to tetragonal (a=b#c) from orthorhombic (a#b#c) as doping concentration of Ba was increased due to contraction of clattice.