Coated high-frequency magnetic dielectric material and preparation method thereof
A cladding, dielectric material technology, applied in the direction of magnetic materials, inorganic material magnetism, inductor/transformer/magnet manufacturing, etc. Excellent performance, good uniformity, and high performance
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Embodiment 1
[0030] A preparation method of a coated high-frequency magnetic dielectric material, which specifically comprises the following steps:
[0031] Step 1. According to ScMnO 3 stoichiometric ratio, weigh the raw material Sc(NO 3 ) 3 20.7g, Mn (NO 3 ) 2 14.9g;
[0032] Step 2. Add the raw materials weighed in step 1 into deionized water, stir to dissolve, then add 57.6 g of citric acid, stir at 80 ° C for 6 hours, and then add ammonia water to adjust the pH value to 8 to obtain mixed solution A;
[0033] Step 3. Continue stirring the mixed solution A obtained in step 2 at 80°C until a wet gel state is formed, then transfer to a blast drying oven, and dry at 120°C to obtain a dry gel;
[0034] Step 4. Place the xerogel obtained in step 3 in a sintering furnace, and sinter at 1200° C. for 2 hours in an air atmosphere to obtain ScMnO 3 Nano-dielectric materials;
[0035] Step 5. Follow Ba 3 Co 2 Fe 24 O 41 stoichiometric ratio, weigh 2.58gCoCl 2 , 6.24gBaCl 2 , 38.88g F...
Embodiment 2
[0038] Compared with Embodiment 1, the difference between this embodiment is that the process of step 5 is: according to Ba 3 Co 2 Fe 24 O 41 stoichiometric ratio, weigh 2.58gCoCl 2 , 6.24gBaCl 2 , 38.88g FeCl 3 Add in deionized water, stir and dissolve to obtain mixed solution B; then according to the molar ratio of ScMnO 3 :Ba 3 Co 2 Fe 24 O 41 Add 1.02 g of ScMnO prepared in step 4 to mixed solution B at a ratio of = 0.04 3 The nano-dielectric material was then added dropwise with 2 mol / L NaOH solution, and the pH value was adjusted to 12 to obtain mixed solution C. The rest of the steps are the same as in Example 1.
Embodiment 3
[0040] Compared with Embodiment 1, the difference between this embodiment is that the process of step 5 is: according to Ba 3 Co 2 Fe 24 O 41 stoichiometric ratio, weigh 2.58gCoCl 2 , 6.24gBaCl 2 , 38.88g FeCl 3 Add in deionized water, stir and dissolve to obtain mixed solution B; then according to the molar ratio of ScMnO 3 :Ba 3 Co 2 Fe 24 O 41 1.53g of ScMnO prepared in step 4 was added to the mixed solution B at a ratio of 0.06 3 The nano-dielectric material was then added dropwise with 2 mol / L NaOH solution, and the pH value was adjusted to 12 to obtain mixed solution C. The rest of the steps are the same as in Example 1.
[0041] image 3 ScMnO prepared by sol-gel method for Example 2 of the present invention 3 SEM images of material (a) and the final coated magnetic dielectric material (b). Depend on image 3 It can be seen that the ScMnO prepared by the sol-gel method 3 The material is nano-powder particles, and the final coated magnetic dielectric mate...
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