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用传统的三氟乙酸盐—金属有机化合物热解法(简称TFA-MOD)来制备YBCO超导薄膜,由于制备时间长,不利于工业化.本文通过加入高沸点螯合剂二乙醇胺来改善前驱液性质,然后采用高温烧结一步法快速制备出完整的YBCO超导薄膜.制备的YBCO超导薄膜致密、几乎无a轴晶粒,YBCO(00l)峰具有立方取向,没有其他杂相峰.同时,转变起始温度TC=91K,转变宽度△TC=2K;在77 K、自场下临界电流密度Jc=~1MA/cm2.实验结果表明,整个制备时间至少缩短10h以上,制备出的YBCO超导薄膜性能优良,该方法为以后的工业化长带生产提供了有利方向.
The preparation of YBCO superconducting thin films by conventional trifluoroacetate-metalorganic compound pyrolysis (TFA-MOD) is not conducive to industrialization due to long preparation time.This paper improves the yield of precursor solution by adding high boiling point chelating agent diethanolamine YBCO superconducting thin films were prepared by high-temperature sintering one-step method.The YBCO superconducting thin films were prepared with compact grains and almost no a-axis grains.The YBCO (00l) peaks had cubic orientation with no other impurity peaks.At the same time, The transition starting temperature TC = 91K and the transition width △ TC = 2K, the critical current density Jc = ~ 1MA / cm2 at 77 K. The experimental results show that the total preparation time is shortened by at least 10h, the prepared YBCO superconductors The film performance is excellent, this method provides a favorable direction for the industrialized long belt production in the future.