Abstract
Abstract (Nd 0.33 Sm 0.33 Gd 0.33 ) 1.18 Ba 2.12 Cu 3.09 O y filaments have been successfully fabricated by a solution spinning method and OCMG processing. We have systematically investigated the relationship between cooling rate from the partial-melting temperature and transport J c value for filamentary samples treated in 0.1%O 2 + Ar. It was found that both the J c value and the microstructure of samples depended on the cooling rate. The samples partially melted at 1050°C and cooling rate of 10–50 °C/h showed J c value higher than 10 4 A/cm 2 . The maximum J c value of 3.0 × 10 4 A/cm 2 was obtained for 40 °C/h sample. The transport J c was also measured at 83–90 K in external magnetic fields up to 17 T. The 10 °C/h sample exhibited superior J c behavior and a J c value of 1.1 × 10 3 A/cm 2 at 83 K was maintained up to 17 T, in which fine (Nd,Sm,Gd) 2 BaCuO 5 particles about 1 μm in diameter were homogeneously dispersed.
Published Version
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