Comparative studies between the influence of single- and multi-walled carbon nanotubes addition on Gd-123 superconducting phase

作者：Abou Aly A I; Anas M^*; Ebrahim Shaker; Awad R; Eldeen I G

来源：Modern Physics Letters B, 2016, 30(36): 1650418.

DOI：10.1142/S021798916504182

• Gd-123
• SWCNTs
• MWCNTs
• critical current density

The effect of single-walled carbon nanotubes (SWCNTs) and multi-walled carbon nanotubes (MWCNTs) addition on the phase formation and the superconducting properties of GdBa2Cu3O7-delta phase has been studied. Therefore, composite superconductor samples of type (CNTs)x GdBa2Cu3O7-delta, 0.0 <= x <= 0.1 wt.% have been synthesized by a standard solid-state reaction technique. The samples have been characterized using X-ray powder diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The results of XRD show an enhancement in the phase formation up to 0.06 wt.% and 0.08 wt.% for SWCNTs and MWCNTs, respectively. SEM and TEM reveal that CNTs form an electrical network resulting in well-connected superconducting grains. The electrical properties of the prepared samples have been examined by electric resistivity and IV measurements, and their results reinforce the XRD, SEM and TEM.

• 出版日期2016-12-30