A kind of preparation method of ybco superconducting composite film
A composite thin film and superconducting thin film technology is applied in the field of preparation of YBCO superconducting composite thin film, which can solve the problems of small improvement, and achieve the effects of improving current carrying capacity, broadening application scope and reducing production cost.
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Embodiment 1
[0027] (1) Weigh samarium acetate, yttrium acetate, barium acetate and copper acetate to be 0.00025mol, 0.005mol, 0.01mol and 0.015mol respectively, mix samarium acetate, yttrium acetate, barium acetate and copper acetate and dissolve them in 10mol% 54.45ml of deionized water of trifluoroacetic acid is made into solution;
[0028] (2) Stir the solution prepared in step (1) for 1 hour with a magnetic stirrer, and then use a rotary evaporator to remove the solvent to obtain a gel;
[0029] (3) Add 1.55 mol of methanol to the gel prepared in the step (2), stir it with a magnetic stirrer for 0.5 h, and then use a rotary evaporator to remove the solvent to further remove impurities such as water to obtain a very pure gel gel;
[0030] (4) Add the gel prepared in step (3) to a mixture of 10.05ml methanol and 10.05ml terpineol, the volume ratio of methanol and terpineol is 1:1, and make Sm, Y , Ba and Cu four metals with a total ion concentration of 1.5mol / L solution. Stir the obt...
Embodiment 2
[0036] (1) Weigh 0.0075mol, 0.01mol, 0.02mol and 0.03mol of samarium acetate, yttrium acetate, barium acetate and copper acetate respectively, mix samarium acetate, yttrium acetate, barium acetate and copper acetate and dissolve them in 20mol% 121.5ml of deionized water of trifluoroacetic acid is made into solution;
[0037] (2) Stir the solution prepared in step (1) for 2 hours with a magnetic stirrer, and then use a rotary evaporator to remove the solvent to obtain a gel;
[0038] (3) Add 3.175 mol of methanol to the gel prepared in step (2), stir with a magnetic stirrer for 1 hour, and then use a rotary evaporator to remove the solvent to further remove impurities such as water to obtain a very pure gel;
[0039] (4) Add the gel prepared in step (3) to a mixture of 16.88ml methanol and 16.88ml terpineol, the volume ratio of methanol and terpineol is 1:1, and make Sm, Y , Ba and Cu four metals with a total ion concentration of 2.0mol / L solution. Stir the obtained methanol an...
Embodiment 3
[0047] (1) Weigh 0.0015mol, 0.015mol, 0.03mol and 0.045mol of samarium acetate, yttrium acetate, barium acetate and copper acetate respectively, mix samarium acetate, yttrium acetate, barium acetate and copper acetate and dissolve them in 30mol% 164.7ml of deionized water of trifluoroacetic acid is made into solution;
[0048] (2) Stir the solution prepared in step (1) for 3 hours with a magnetic stirrer, and then use a rotary evaporator to remove the solvent to obtain a gel;
[0049] (3) Add 4.875 mol of methanol to the gel prepared in step (2), stir it with a magnetic stirrer for 1.5 hours, and then use a rotary evaporator to remove the solvent to further remove impurities such as water to obtain a very pure gel glue;
[0050] (4) Add the gel prepared in step (3) to a mixture of 15.25ml methanol and 15.25ml terpineol, the volume ratio of methanol and terpineol is 1:1, and make Sm, Y , Ba and Cu four kinds of metal ion concentration of 3.0mol / L solution. Stir the obtained ...
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