Oxygen controlled melt growth of filamentary Nd123 oxide superconductor by solution spinning method

The oxygen controlled melt growth process for the filamentary Nd123 superconductor produced by solution spinning to obtain a high J(c) was examined. The filaments have been prepared by dry spinning through a homogeneous aqueous solution containing mixed acetates of Nd, Ba and Cu, poly(vinyl alcohol) and organic acids, By controlling the starting compositions and the melt growth process: a high T-c of 94.5 K and a high J(c) of more than 1.3 x 10(4) A/cm(2) at 77 K and 0 T were achieved for the filamentary Nd1.18Ba2.12Cu3.09Ox superconductor with a diameter of 60 mu m. The grains in the sample are not always aligned along the fiber length.