Title :
Structural and morphological studies of YBCO doped with α-CNTs
Author :
Hawari, Nor Liza ; Suan, Mohd Shahadan Mohd ; Johan, Mohd Rafie
Author_Institution :
Dept. of Mech. Eng., Univ. of Malaya, Kuala Lumpur, Malaysia
Abstract :
A co-precipitation technique has been used to synthesize nanoscale Yttrium Barium Copper Oxide (YBCO) superconducting oxide materials doped with amorphous carbon nanotubes (α-CNTs). Carbon nano-tubes were chosen as doping materials since their nanometer diameter can serve as the effective pinning centers compared to the ordinary carbon. The properties of materials were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM) and transmission electron microscopy (TEM). TEM image show the α-CNTs. XRD pattern indicated the formation of single phase YBCO. FESEM images show the agglomerated YBCO particles after doping with α-CNTs.
Keywords :
X-ray diffraction; amorphous state; barium compounds; carbon nanotubes; crystal morphology; doping; field emission electron microscopy; high-temperature superconductors; precipitation; scanning electron microscopy; transmission electron microscopy; type II superconductors; yttrium compounds; FESEM; TEM; X-ray diffraction; XRD; YBCO:C; agglomeration; amorphous carbon nanotubes; coprecipitation; doping; field emission scanning electron microscopy; morphological properties; structural properties; superconducting oxide materials; transmission electron microscopy; Doping; Powders; Superconducting transition temperature; Yttrium barium copper oxide; YBCO superconductor; carbon nanotubes; co-precipitation; doping; pinning centers;
Conference_Titel :
Applied Superconductivity and Electromagnetic Devices (ASEMD), 2011 International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4244-7852-1
DOI :
10.1109/ASEMD.2011.6145071