Fabrication and Characterization of Aligned YBa2Cu3O7 − δ Superconductor Electrospun Nanofibers and Twisted Yarn Based on PVA
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YBa2Cu3O7 − δ (YBCO) superconducting twisted yarns from electrospun aligned nanofibers are produced with a critical transition temperature of Tc = 92 K. A solution of PVA and Y–Ba–Cu acetates are used as a precursor in the electrospinning to prepare aligned nanofibers and twisted yarns. The aligned nanofibers and twisted yarns are then pyrolysed to remove PVA and sintered to obtain a superconducting phase. Finally, before and after sintering, the aligned nanofibers and twisted yarns are studied by SEM, XRD, and AC magnetic susceptibility techniques. Results are presented in this paper.
KeywordsYBCO superconductor Aligned nanofibers Twisted yarn Electrospinning PVA
The authors would like to thank the Shahid Chamran University of Ahvaz, I.R. Iran, for the scientific and financial support.
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