Field dependence of Jc for melt textured filamentary (Nd, Sm, Eu, Gd)-Ba [sbnd]Cu [sbnd]O superconductors

Abstract

We have synthesize the filamentary LRE (LRE=Nd, Sm, Eu, Gd)123 superconductors by solution spinning and melt growth process in flowing 1%O 2+Ar (OCMG). The effect of heating condition for oxygenation on the field dependence of J c at 77K of the filamentary (Nd, Sm, Eu, Gd)123 superconductors was examined. High J c value of 6100 A/c 2 at 77 K and 9 T was measured by controlling the heating condition. The T c of the sample was 95 K with Δ T c =1.5K. The pinning properties of the sample were examined by extended analysis of volume pinning force and its found that Δκ-point pinning was dominant in this case.