Controlled-Growth of YBa2Cu3O7-δ Film Using Modified Low-Fluorine Chemical Solution Deposition
Controlled-Growth of YBa2Cu3O7-δ Film Using Modified Low-Fluorine Chemical Solution Deposition
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DOI：
10.1109/tasc.2014.2371534
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发表时间：
2015-06-01
影响因子：
1.8
通讯作者：
Cai, Chuanbing
中科院分区：
文献类型：
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作者：
Li, Minjuan;Yang, Wentao;Cai, Chuanbing
开发了各种不同氟含量的前驱体溶液，包括氟含量为54% （F-54%）的常规低氟（CLF）溶液、氟含量为31%的超低氟（SLF）溶液和氟含量为7%的极低氟（ELF）溶液，以及氟含量为100%的全三氟乙酸酯（all - tfa）溶液。DTA分析表明，氟含量越低的前驱体溶液热解速率越快。研究了热解速率对不同低氟（LF）溶液制备的YBa2Cu3O7-delta （YBCO）薄膜微观结构和输运性能的影响，发现在低氟（LF）溶液下，高速率的热解过程可以获得光滑均匀的YBCO薄膜。此外，使用CLF溶液在5℃/min或使用ELF溶液在20℃/min下可以获得高性能的YBCO薄膜。随后，在不同的LF溶液下，YBCO薄膜的超导性能和产率都得到了有效的提高，为大规模快速制备YBCO涂层导体提供了一条有希望的途径。
Various precursor solutions with different fluorine content have been developed, including the conventional low-fluorine (CLF) solution with fluorine content of 54% (F-54%), the super low-fluorine (SLF) solution with F-31% and the extreme low-fluorine (ELF) solution with F-7% in contrast to the all trifluoroacetates (All-TFA) solution with F-100%. The DTA analysis shows that the precursor solution with lower fluorine content endures a faster pyrolysis rate. The influence of pyrolysis rate on the microstructure and transport properties of YBa2Cu3O7-delta (YBCO) films prepared by various low-fluorine (LF) solutions was investigated, revealing that smooth and homogeneous YBCO films can be achieved with high-rate decomposition process in the case of LF solutions. Also, high-performance YBCO films can be obtained at 5 degrees C/min using CLF solution or 20 degrees C/min using ELF solution. Subsequently, the superconducting properties and production rate of YBCO film are improved effectively in the case of various LF solutions, suggesting a promising route to scale up and rapid preparation of YBCO coated conductors.