Using high temperature-optical microscopy, in situ investigations were conducted on melting and superheating behaviors of REBa₂Cu₃O_7−δ (RE123, RE = Nd, Gd) films, which were grown on nano-layer buffered substrates. The results demonstrate that all buffered RE123 films have improved crystallinity and in-plane alignments, leading to the higher superheating capability. In the first case, due to its good lattice match with the buffer material of Y123, the Nd123 film with the minimal extrinsic property grew from the superior interface. In the second circumstance, because of its stronger chemical bonding with the buffer layer of Gd₂O₃, the pure c-axis oriented Gd123 film was fabricated. Moreover, the optimized thickness of buffer layer plays an important role in reducing interface energy of RE123 films and enhancing its superheating capacity.

中文翻译：

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具有纳米层缓冲结构的REBa2Cu3Oy薄膜的熔融行为和过热能力

使用高温光学显微镜，原位调查是在熔化和过热的的REBa行为进行₂的Cu ₃ ö _7-δ（RE123，RE =钕，Gd）的膜，其生长在纳米层缓冲底物。结果表明，所有缓冲的RE123薄膜均具有改善的结晶度和面内排列，从而具有更高的过热能力。在第一种情况下，由于其与Y123的缓冲材料具有良好的晶格匹配性，因此具有优异的非本征性质的Nd123膜从优越的界面开始生长。在第二种情况下，因为以Gd构成的缓冲层的较强的化学键合的₂ Ó ₃，纯Ç制作了高轴取向的Gd123薄膜。此外，缓冲层的最佳厚度在降低RE123膜的界面能并增强其过热能力方面起着重要作用。