Abstract
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 1.3x104 A/cm2 at 77 K and 0 T were achieved for the filamentary Nd1.18Ba2.12Cu3.09Ox superconductor with a diameter of 60 µm. The grains in the sample are not always aligned along the fiber length.
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