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 Jcwas 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 Tcof 94.5 K and a high Jcof more than 1.3x104A/cm2at 77 K and 0 T were achieved for the filamentary Nd1.18Ba2.12Cu3.09Oxsuperconductor with a diameter of 60 µm. The grains in the sample are not always aligned along the fiber length.