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CN102584204A 一种YBCO超导复合薄膜的制备方法 无效 - 驳回

一种YBCO超导复合薄膜的制备方法
摘要：
一种YBCO超导复合薄膜的制备方法。首先配制前驱液，把乙酸钇Y(CH3COO)3、乙酸钡Ba(CH3COO)2和乙酸铜Cu(CH3COO)2按照Y∶Ba∶Cu＝1∶2∶3的摩尔比混合溶于10-30mol％三氟乙酸的水溶液中；搅拌均匀后真空蒸干溶剂得到凝胶；再加入甲醇搅拌均匀后蒸干溶剂得到凝胶；随后加入适量甲醇和松油醇，制成Y、Ba和Cu三种金属离子总浓度为1.5-3.0mol/L的溶液，搅拌均匀后再加入三种金属总离子摩尔浓度的10％-15％的乙酰丙酮锆和乙酰丙酮钛，制备成前驱液；然后将前驱液涂覆在基片上；涂覆好的薄膜先经历300℃-500℃的低温热分解过程，分解三氟乙酸盐；最后经历800℃-880℃高温热处理和450℃-550℃的退火过程形成含有纳米钛酸钡和纳米锆酸钡的YBCO超导复合膜。本发明制备的YBCO薄膜的临界电流密度到达7MA/cm2(77K，0T)。
摘要（英）：

Provided is a method for preparing an yttrium barium copper oxide (YBCO) superconductive composite film. Firstly, a precursor solution is prepared, namely yttrium acetate Y(CH3COO)3, barium acetate Ba(CH3COO)2 and cupric acetate Cu(CH3COO)2 are mixed and dissolved in a water solution containing 10-30 mol% of trifluoroacetic acid according to the molar ratio of Y to Ba to Cu being 1 to 2 to 3. The solvent is evaporated in a vacuum mode to obtain gel after even stirring. Carbinol is further added into the gel to be stirred evenly and then the solvent is dried to obtain gel. Afterwards, an appropriate amount of carbinol and terpineol are added into the solution to prepare a solution with 1.5-3.0 mol/L of total ion concentration of metal Y, metal Ba and metal Cu, after even stirring, zirconium acetylacetonate and titanium acetylacetonate which have 10%-15% of total ion molar concentration of metal Y, metal Ba and metal Cu are added into the solution to prepare the precursor solution. After that, the precursor solution is coated on a substrate. A coated film is first subjected to low temperature thermal decomposition at the temperature of 300-500 DEG C to decompose trifluoroacetic acid salt. Finally, the coated film is subjected to high temperature heat treatment at the temperature of 800-880 DEG C and annealing process at the temperature of 450-550 DEG C to form the YBCO superconductive composite film containing nanometer barium titanate and nanometer barium zirconate. The critical current density of the YBCO superconductive composite film reaches 7 MA/ cm<2> (77K, 0T).

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