IRON-DOPED Bi2Sr2Ca2(Cu0.91Fe0.09)3O10+δ SUPERCONDUCTOR WITH NANOGROWTH

Abstract

In this paper, we describe about iron-doped BSCCO superconductors and their nanoparticle growth for the samples Bi2Sr2Ca2(Cu[Formula: see text]Fe[Formula: see text])3O[Formula: see text] and Bi2Sr2Ca2(Cu[Formula: see text]Fe[Formula: see text])3O[Formula: see text]. These samples are synthesized by conventional solid state reaction using Ball mill. Here, we used 0.07 and 0.09[Formula: see text]wt.% of iron in samples in coper site and obtained transition temperature 21.659 and 21.0405[Formula: see text]K, respectively. For the characterization of phase, structure, crystallite size, strain, chemical, and growth of nanoparticles, we used X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscope (FESEM), Energy Dispersive X-ray (EDX), High Resolution Transmission Electron Microscopy (HRTEM), and Fourier Transform Infrared (FTIR). The results confirm with the co-existence phases Bi-2212 and Bi-2223 with lattice constant [Formula: see text][Formula: see text]Å, [Formula: see text][Formula: see text]Å, [Formula: see text][Formula: see text]Å and [Formula: see text][Formula: see text]Å, [Formula: see text][Formula: see text]Å, [Formula: see text][Formula: see text]Å for both concentration of iron 0.07[Formula: see text]wt.%, 0.09[Formula: see text]wt.%, respectively. The FESEM micrographs confirm nanoparticles in ranging 1[Formula: see text][Formula: see text]m to 500[Formula: see text]nm which is agglomerated in tetragonal phase. The average crystallite size of the grown nanoparticles calculated through Scherrer formula is confirmed by HRTEM between the range 2–100[Formula: see text]nm. The FTIR vibrational spectra confirm the bond species corresponding to tetragonal phase and high interaction of Cu-O and Fe-O. The samples exhibit superconductivity at transition temperature 21.659 and 21.0405[Formula: see text]K.