Binary material (Zr,Ce)O2 nanodots, and preparation method and application thereof
A binary material, nano-dot technology, applied in the field of high-temperature superconducting materials
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Embodiment 1
[0030] 1) dissolving zirconium acetylacetonate and cerium acetylacetonate into n-propionic acid to obtain a precursor solution by dissolving zirconium ions and cerium ions in a molar ratio of 0.6:0.4 and a total concentration of zirconium ions and cerium ions of 0.02 mol / L;
[0031] 2) Apply the precursor solution to the SrTiO with a deviation of 20 degrees from the (100) direction by dipping 3 On a single crystal substrate, pulling SrTiO 3 The speed of the single crystal substrate metal substrate is 150 mm / min to obtain the precursor film;
[0032] 3) in H 2 Under gas protection conditions, the precursor film was sintered at 1050 °C for 60 minutes to obtain Zr 0.6 Ce 0.4 o 2 nano dots.
[0033] 4) The YBCO film was prepared by the low-fluorine MOD process on the transition layer substrate coated with nanodots.
[0034] Zr 0.6 Ce 0.4 o 2 The surface morphology is as figure 1 As shown, nanodots can be clearly seen in the AFM-2D photo, with an average height of 15 nano...
Embodiment 2
[0036] 1) Dissolving zirconium acetylacetonate and cerium acetylacetonate into n-propionic acid at a molar ratio of zirconium ions to cerium ions of 0.9:0.1, with a total concentration of zirconium ions and cerium ions of 0.002mol / L, to obtain a precursor solution ;
[0037] 2) Apply the precursor solution to the SrTiO with a deviation of 8 degrees from the (100) direction by dipping 3 On the single crystal substrate, pull the single crystal substrate at a speed of 10 mm / min to obtain the precursor film;
[0038] 3) Under the protection of Ar gas, the precursor film was sintered at 950°C for 500 minutes to obtain Zr 0.9 Ce 0.1 o 2 nano dots.
[0039] 4) The YBCO film was prepared by the low-fluorine MOD process on the transition layer substrate coated with nano-dots.
[0040] Zr 0.9 Ce 0.1 o 2 The three-dimensional surface morphology of figure 2 As shown, the nanodots are uniformly dispersed in this AFM-3D photo. The particle density is 60 / μmP2 ; The size is uniform...
Embodiment 3
[0042] 1) dissolving zirconium acetylacetonate and cerium acetylacetonate in n-propionic acid, according to the molar ratio of zirconium ions and cerium ions of 0.85:0.15, the total concentration of zirconium ions and cerium ions is 0.007mol / L, to obtain a precursor solution;
[0043] 2) Apply the precursor solution to the LaAlO3 single crystal substrate deviated from the (100) direction by 10 degrees by spin coating, the rotation speed is 4000rpm, and the time is 60s to obtain the precursor film;
[0044] 3) in H 2 Mixing with Ar (H 2 The volume percentages of Ar and Ar are 4% and 96%, respectively) under gas protection conditions, the precursor film was sintered at 1150 ° C for 300 minutes to obtain Zr 0.85 Ce 0.15 o 2 nano dots.
[0045] 4) The YBCO film was prepared by the low-fluorine MOD process on the transition layer substrate coated with nanodots.
[0046] image 3 for Zr 0.85 Ce 0.15 o 2 The two-dimensional map of the surface topography; Figure 4 for Zr 0...
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