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Synthesis, Characterization and Activation energy of Nano-(GO)x/(Cu,Tl)-1234 Superconducting Composites

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Abstract

Nano-graphene oxide, nano-(GO), was prepared via a modified Hummer’s method. Hence, superconducting composites of type (GO)x/(Cu0.25Tl0.75)Ba2Ca3Cu4O12−δ, x = 0.00, 0.25, 0.50, 0.75, 1.00, 1.50 and 2.00 wt%, were prepared via the solid-state reaction technique at 850 °C under ambient pressure. The prepared nano-(GO) was characterized using X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy, transmission electron microscopy, high-resolution transmission electron microscopy and the selected-area electron diffraction pattern. The composites samples of type (GO)x/(Cu0.25Tl0.75)Ba2Ca3Cu4O12−δ were characterized using XRD and scanning electron microscopy. The electrical properties of the prepared samples were investigated using the electrical resistivity measurements. The results showed that the samples retained their superconductivity for all x values with a maximum enhancement in the phase formation, the superconducting transition temperature and the activation energy at x = 0.75 wt%.

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Data Availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

The authors thank the Superconductivity and Metallic-Glass Lab, Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt, in cooperation of Institute of Graduate Studies and Research (IGSR), Materials Science Department, Alexandria University, Alexandria, Egypt, for aiding with the experimental procedures.

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  1. Physics Department, Faculty of Science, Alexandria University, Alexandria, Egypt

    M. Anas & A. I. Abou-Aly

  2. Physics Department, Faculty of Science, Damanhour University, Damanhour, Egypt

    Ghada A. El-Shorbagy & A. Khalaf

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Anas, M., El-Shorbagy, G.A., Abou-Aly, A.I. et al. Synthesis, Characterization and Activation energy of Nano-(GO)x/(Cu,Tl)-1234 Superconducting Composites. J Low Temp Phys 206, 210–231 (2022). https://doi.org/10.1007/s10909-021-02646-z

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