Abstract
Filamentary Nd123 superconductors were produced by solution spinning and oxygen controlled melt growth process. A transport critical current density, J c for the filamentary Nd123 sample prepared with various conditions was examined in magnetic fields up to 10 T at 77 K. Currents were passed along the fiber axis and were always normal to the applied magnetic field. The filamentary Nd123 superconductor exhibited J c values larger than the filamentary Y123 superconductor in high fields. An anomalous peak effect was not observed for the J c– H curve of the Nd123 samples and J c values were strongly dependent on the composition of the precursor and oxygenation condition. By controlling the melt growth process and post-annealing condition, high J c values exceeding 10 4 A/cm 2 at 77 K and 0 T and >10 3 A/cm 2 at 10 T were achieved for the filamentary Nd 1.18Ba 2.12Cu 3.09O x superconductor prepared in flowing 1%O 2+Ar.
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