Abstract
YBa 2Cu 3O 7− δ (YBCO) and Sm partially substituted YBCO melt-textured (MT) bulks were grown by a novel seed of NdBa 2Cu 3O 7− δ (NdBCO) thick film. On the basis of experimental results in this work, the seed size effects on the formation of the domain structure were discussed. In addition, the melting process of the NdBCO thick film was in situ observed by high-temperature optical microscopy. It was found that the NdBCO LPE thick film decomposed incompletely after 30 min holding at 1100 °C, which is higher than processing temperatures of experiments. In short, due to its close lattice match, achievable large size and high thermal stability, the Nd123 thick film may be a good candidate for seeding REBCO growth.
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