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

Rohitash Kumar ()
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Rohitash Kumar: Department of Physics, J. N. V. University, Jodhpur 342005, Rajasthan, India

Surface Review and Letters (SRL), 2021, vol. 28, issue 04, 1-10

Abstract: In this paper, we describe about iron-doped BSCCO superconductors and their nanoparticle growth for the samples Bi2Sr2Ca2(Cu0.93Fe0.07)3O10+δ and Bi2Sr2Ca2(Cu0.91Fe0.09)3O10+δ. These samples are synthesized by conventional solid state reaction using Ball mill. Here, we used 0.07 and 0.09wt.% of iron in samples in coper site and obtained transition temperature 21.659 and 21.0405K, 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 a=5.401Å, b=5.4075Å, c=36.6652Å and a=5.3951Å, b=5.3997Å, c=36.5449Å for both concentration of iron 0.07wt.%, 0.09wt.%, respectively. The FESEM micrographs confirm nanoparticles in ranging 1μm to 500nm 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 2–100nm. 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 21.0405K.

Keywords: Nanoparticles growth; Bi-2223 superconductors; XRD; FESEM; HRTEM; FTIR; DC resistivity (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1142/S0218625X21500207

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