Cobalt doped iron bismuth titanate multiferroic thin film material and preparation method thereof
A technology of iron bismuth titanate and thin film material, applied in the field of cobalt-doped iron bismuth titanate multiferroic thin film material and preparation thereof, can solve the problems of small residual magnetization and electric polarization, restricting application and the like, and achieves less equipment. , the preparation method is scientific, the effect of wide application prospect
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Embodiment 1
[0024] The concrete steps of preparation are:
[0025]Step 1, according to the molar ratio of bismuth, iron, cobalt and titanium is the ratio of 6.05: 2-x: x: 3, wherein, x=0.1, after weighing bismuth nitrate, iron nitrate, cobalt acetate and n-butoxide titanium, first Add bismuth nitrate, iron nitrate, cobalt acetate and titanium n-butoxide in turn to the mixed solution of acetic acid and acetylacetone under stirring at 70°C until it is completely dissolved; then stir at room temperature for 5 hours to obtain a concentration of 0.1mol / L A precursor solution, wherein the molar ratio of acetic acid to acetylacetone is 3.5:6.5.
[0026] Step 2, first apply the precursor solution to the substrate, and then heat it at 90°C for 7 minutes; wherein, the coating is spin coating, the rotation speed during spin coating is 4000r / min, the time is 120s, and the substrate is a metal substrate platinum sheet , to obtain a substrate covered with a gel film. Then, the substrate covered with ...
Embodiment 2
[0029] The concrete steps of preparation are:
[0030] Step 1, according to the molar ratio of bismuth, iron, cobalt and titanium is the ratio of 6.05: 2-x: x: 3, wherein, x=0.3, after weighing bismuth nitrate, iron nitrate, cobalt acetate and n-butoxide titanium, first Add bismuth nitrate, iron nitrate, cobalt acetate and titanium n-butoxide in sequence to the mixed solution of acetic acid and acetylacetone under stirring at 73°C until it is completely dissolved; then stir at room temperature for 5.5h to obtain a concentration of 0.12mol / A precursor solution of L, wherein the molar ratio of acetic acid to acetylacetone is 3.8:6.3.
[0031] Step 2, after coating the precursor solution on the substrate, heat it at 95°C for 6.5 minutes; wherein, the coating is spin coating, the rotation speed during spin coating is 5000r / min, and the time is 95s, and the substrate is metal substrate platinum sheet to obtain a substrate covered with a gel film. Then, the substrate covered with...
Embodiment 3
[0034] The concrete steps of preparation are:
[0035] Step 1, according to the molar ratio of bismuth, iron, cobalt and titanium is the ratio of 6.05: 2-x: x: 3, wherein, x=0.6, after weighing bismuth nitrate, iron nitrate, cobalt acetate and titanium n-butoxide, first Add bismuth nitrate, iron nitrate, cobalt acetate and titanium n-butoxide in turn to the mixed solution of acetic acid and acetylacetone under stirring at 75°C until it is completely dissolved; then stir at room temperature for 6 hours to obtain a concentration of 0.13mol / L precursor solution, wherein the molar ratio of acetic acid to acetylacetone is 4:6.
[0036] Step 2, first apply the precursor solution to the substrate, and then heat it at 100°C for 6 minutes; wherein, the coating is spin coating, the rotation speed during spin coating is 6000r / min, and the time is 65s, and the substrate is a metal substrate platinum sheet , to obtain a substrate covered with a gel film. Then, the substrate covered with ...
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