Method for manufacturing REBCO superconducting film and constant-temperature dip-coating device
A technology of rare earth barium copper oxide and superconducting film, which is applied to the equipment used to manufacture conductive/semiconductive layers, the usage of superconducting elements, superconducting devices, etc., and can solve the problem of not considering the control factors of temperature and film thickness.
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example 1
[0064] The preparation process is as figure 1 As shown, first according to the metal cation molar ratio of 1:(1+x):3 (where 0.5≤x≤1), yttrium acetate tetrahydrate, barium acetate and copper acetate monohydrate were dissolved in deionized water, and trifluoroacetic acid was added thereto. After 2 times of rotary evaporation, the above-mentioned metal salt was finally dissolved in methanol to obtain a clear, transparent, dark blue precursor with a concentration of 1.5 mol / L.
[0065] Using an improved water bath, dip-coating was performed at temperatures of 0°C, 10°C, 20°C and 30°C, respectively, and the above precursor solution was coated on LaAlO 3 (lanthanum aluminate) single crystal substrate, and then placed in a tube furnace for rapid heat treatment, the YBCO precursor film can be obtained. The film section thickness was observed with a Hitachi Su8010 scanning electron microscope, and 5 values were taken for each sample to eliminate errors. Dip-coating at different co...
example 2
[0068] According to a method of preparing a solution according to the embodiment, the preparation concentration is a precursor of 1.8mol / L, and then the precursor is added with a mass fraction of 25% polyethylene glycol 2000 (PEG2000), and the modification is obtained after fully stirring, dissolving and standing. precursors. By improving the temperature control of the water bath, dip-coating was carried out at temperatures of 0°C, 10°C, 20°C and 30°C, respectively, and the above precursor solution was applied to LaAlO by dip-coating technology. 3 (lanthanum aluminate) single crystal substrate, and then placed in a tube furnace for rapid heat treatment, the YBCO precursor film can be obtained. The film section thickness was observed with a Hitachi Su8010 scanning electron microscope, and 5 values were taken for each sample to eliminate errors. Dip-coating at different constant temperatures of 0°C, 10°C, 20°C, and 30°C, the thickness of the film is divided into 548nm, 493nm,...
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