Fabrication of ${\rm YBa}_{2}{\rm Cu}_{3}{\rm O}_{7-{\rm x}}$ Superconducting Films Using Low-Fluorine-Content Solution
Fabrication of ${\rm YBa}_{2}{\rm Cu}_{3}{\rm O}_{7-{\rm x}}$ Superconducting Films Using Low-Fluorine-Content Solution
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DOI：
10.1109/tasc.2006.887545
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发表时间：
2007-03
影响因子：
1.8
通讯作者：
Gaoyang Zhao;Yuanqing Chen;L. Lei;R. Xue
中科院分区：
文献类型：
--
作者：
Gaoyang Zhao;Yuanqing Chen;L. Lei;R. Xue
提出了一种制备YBa2Cu3O7-x(YBCO)超导薄膜的新方案--以无氟Y和铜有机盐为前驱体的BaTFA。这种新的溶液在全TFA溶液中只含有30%的氟，并且热处理周期比使用全TFA溶液时要短得多。用X射线衍射仪(X射线衍射仪)、扫描电子显微镜(SEM)和拉曼光谱对新的YBCO薄膜进行了表征。结果表明，采用低氟溶液制备的YBCO薄膜具有良好的织构并保持了较高的氧含量。这些YBCO薄膜样品具有良好的超导性能，包括高的临界转变温度T_c=90.5K，急剧的转变温度DeltaTC<；0.9K和增强的临界电流密度J_c=3 mA/cm~2
A new solution for fabrication of YBa2Cu3O 7-x (YBCO) superconducting films has been developed of Ba-TFA with nonfluorine Y and Cu organic salts being used as precursors. This new solution contains only 30% of the fluorine in an all-TFA solution, and duration of heat-treatment cycles is much shorter than that when an all-TFA solution is used. New YBCO-films are characterized by X-ray diffractometer (XRD), scanning electron microscopy (SEM), and Raman spectroscopy. The results indicate that the as-prepared YBCO-films using the low-fluorine-content solution exhibit good textures and retain high oxygen content. Samples of these YBCO-films have good superconducting properties including high critical transition temperature Tc=90.5 K, sharp transition temperature DeltaTC<0.9 K, and enhanced critical current density Jc=3 MA/cm2