Abstract
Large single-domain Gd–Ba–Cu–O bulk material was successfully fabricated by a modified infiltration and growth process (IG) using a liquid source composed of Gd 2O 3, BaCuO 2 and CuO. The growth character, microstructure, and performance of the GdBCO product were investigated. The results indicate that, this modified IG technique can be used to fabricate well-textured and high performance GdBCO large single domains more efficiently. Moreover, an increasing number of small Gd 2BaCuO 5 (Gd-211) particles and coarsening of large Gd-211 particles were both observed in the microstructure with increasing distance from the seed, which together are jointly responsible for the increasing volume fraction of Gd-211 particles during the GdBa 2Cu 3O 7− x (Gd-123) growth process.
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