传统的化学溶液法制备微米级YB2Cu3O7-x(YBCO)涂层导体过程中,需要反复多次镀膜和热分解过程才能使膜厚达到1μm以上.本研究以独特的先进低氟溶液为YBCO前驱溶液,通过添加聚吡咯烷酮(PVP)作为增稠剂,提高了YBCO胶体的粘度,并提高了最终YBCO薄膜的厚度及致密性.单次镀膜获得的YBCO薄膜厚度达到了600nm.77K,0T条件下,临界电流密度Jc达到1MA/cm2以上.这种高分子改性的低氟YBCO前驱溶液沉积技术有望在未来涂层导体开发中发挥作用.
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