Preparation method of gadolinium-barium-copper-oxygen compact film
A technology of gadolinium-barium-copper-oxygen dense film, which is applied in the field of preparation of gadolinium-barium-copper-oxygen dense film, can solve problems such as the reduction of superconducting performance, and achieve the effects of improved stability, easy operation, and rapid pyrolysis
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Embodiment 1
[0026] The preparation method of the gadolinium-barium-copper-oxygen dense film of the present embodiment comprises the following steps:
[0027] Step 1, dissolving gadolinium trifluoroacetate, barium trifluoroacetate and copper trifluoroacetate in methanol to obtain trifluoroacetate precursor solution 1; gadolinium, barium and copper trifluoroacetate precursor solution 1 are The molar ratio of metal ions in the medium is: Gd 3+ : Ba 2+ : Cu 2+ =1:2:3, the total molar concentration of the three metal ions of gadolinium, barium and copper in the trifluoroacetate precursor solution 1 is 1.5mol / L;
[0028] Step 2. Add the chelating agent and the trifluoroacetic acid salt precursor described in step 1 into the agitator, stir at 60° C. for 3 hours at a speed of 400 r / min to form a complex, and then mix the complex compound in the mixed solution of methanol and propionic acid to obtain trifluoroacetate precursor solution two; The volume ratio of methanol and propionic acid in th...
Embodiment 2
[0033] The preparation method of the gadolinium-barium-copper-oxygen dense film of the present embodiment comprises the following steps:
[0034] Step 1, dissolving gadolinium trifluoroacetate, barium trifluoroacetate and copper trifluoroacetate in methanol to obtain trifluoroacetate precursor solution 1; gadolinium, barium and copper trifluoroacetate precursor solution 1 are The molar ratio of metal ions in the medium is: Gd 3+ : Ba 2+ : Cu 2+ =1:2:3, the total molar concentration of the three metal ions of gadolinium, barium and copper in the trifluoroacetate precursor solution 1 is 2mol / L;
[0035]Step 2. Add the chelating agent and the trifluoroacetate precursor solution 1 described in step 1 into the agitator, stir at a temperature of 70° C. for 2 hours at a speed of 500 r / min to form a complex, and then mix the complex compound in the mixed solution of methanol and propionic acid to obtain trifluoroacetate precursor solution two; The volume ratio of methanol and prop...
Embodiment 3
[0040] The preparation method of the gadolinium-barium-copper-oxygen dense film of the present embodiment comprises the following steps:
[0041] Step 1, dissolving gadolinium trifluoroacetate, barium trifluoroacetate and copper trifluoroacetate in methanol to obtain trifluoroacetate precursor solution 1; gadolinium, barium and copper trifluoroacetate precursor solution 1 are The molar ratio of metal ions in the medium is: Gd 3+ : Ba 2+ : Cu 2+ =1:2:3, the total molar concentration of the three metal ions of gadolinium, barium and copper in the trifluoroacetate precursor solution 1 is 2.5mol / L;
[0042] Step 2. Add the chelating agent and the trifluoroacetate precursor solution 1 described in step 1 into the agitator, stir at a temperature of 70° C. for 2 hours at a speed of 500 r / min to form a complex, and then mix the complex compound in the mixed solution of methanol and propionic acid to obtain trifluoroacetate precursor solution two; The volume ratio of methanol and p...
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