Abstract

Processing, microstructure and property relationships in neodymium oxide doped high temperature superconducting YBa/sub 2/Cu/sub 3/O/sub 7-x/ (Y123) were investigated. It has been observed that a small amount (/spl sim/ 0.25 - 1 mol%) of Nd/sub 2/O/sub 3/ results in the formation of nanosized secondary phases which may have a significant effect on the superconducting properties of melt textured Y123 single crystals. It was further observed that addition of Nd/sub 2/O/sub 3/ greater than 1 mol% leads to multiple nucleation during solidification of Y123 and results in polycrystalline samples. Melt textured single crystals of Y123 with < 1 mol% were successfully grown and characterized with respect to microstructural development and superconducting properties.

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