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- W3046140164 abstract "This paper presents the synthesis and characterization of Bi 2 Sr 2 Ca 2 Cu 3 O 8+x superconducting nanowires. Bi 2 Sr 2 Ca 2 Cu 3 O 8+x nanowires with T c = 68 K were synthesized using the electrospinning process employing sol–gel precursors. A sol–gel methodology was used to obtain a homogeneous PVP solution containing Bi, Sr, Ca, and Cu oxalates. Samples were heat-treated at 120 °C to remove excess moisture, and then at 850 °C in box furnace. Bulk sample was also prepared using coprecipitation method for comparison. Based on XRD, the nanowire sample showed minimal Bi-2223 phases and apparent Bi-2212 phases. The morphology, microstructure, and crystal structure of these nanowires were examined using field emission scanning electron microscopy (FESEM) to reveal a rectangular morphology having typical wire thickness in the range of 150–1000 nm. Electrospun Bi-2223 were grinded and pressed at 0.9 GPa into pellets. DC measurements were conducted to investigate the critical transition temperature ( T c ) of Bi-2223 nanowires and to compare their magnetic properties to those of coprecipitated Bi-2223 pellets. The T c for the bulk sample is observed at 101 K and electrospun Bi-2223 at 68 K. Coprecipitated Bi-2223 was added with Pb whereas electrospun Bi-2223 does not employ Pb. These results point to the existence of utilizing of the substitution of Pb with Bi; Bi-2223 phases in pressed nanowire are less, and the potential of using electrospinning to synthesis functional Bi-2233 superconductors." @default.
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- W3046140164 date "2020-07-01" @default.
- W3046140164 modified "2023-09-23" @default.
- W3046140164 title "Electrospinning Synthesis of Bi-2223 Superconducting Nanowires" @default.
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- W3046140164 doi "https://doi.org/10.4028/www.scientific.net/ssp.307.93" @default.
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