| 溶胶凝胶法制备NiCuZn铁氧体的研究 |
| Alternative Title | The study of NiCuZn ferrite prepared by sol-gel method
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| 于国建 |
| Thesis Advisor | 魏福林
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| 2013-05-25
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| Degree Grantor | 兰州大学
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| Place of Conferral | 兰州
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| Degree Name | 硕士
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| Keyword | 铁氧体
NiCuZn
溶胶凝胶
铁含量
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| Abstract | 论文重点研究了铁含量和热处理温度对NiCuZn铁氧体性能的影响。得到了一下一些有意义的结果：
1.粉末样品
①用溶胶凝胶法制备的Ni0.4Cu0.2Zn0.4FexO4粉体材料，在750 ℃以上热处理即可生成纯的尖晶石结构的磁性相。
②铁含量x=2.0的正分配比NiZnCu铁氧体1000℃保温3小时的预烧料的静态磁性能最优,矫顽力约为8.4 Oe,比饱和磁化强度达到78.0 emu/g。
2.烧结体样品
①1000 ℃下烧结的x=2.0材料静态磁性能最优，矫顽力为1.5 Oe，饱和磁化强度为79.5 emu/g。
②1000 ℃下烧结的x=1.8材料的起始磁导率最高，接近125，截止频率约为20 MHz。随x增大，磁导率降低、截止频率提高，x=2.1和2.2时，截止频率高于100 MHz。 |
| Other Abstract | The thesis focuses on the effects of iron content and heat treatment temperature on the properties of NiCuZn ferrite material. Some significant results have been obtained.
1.Powder samples
①Ni0.4Cu0.2Zn0.4FexO4 powder materials prepared by sol-gel method form pure spinel phase when the heat treatment temperature exceeds 750 ℃.
②The presintering powder with better magnetic properties was obtained when the samples were presintered at 1000 ℃ for 3 hours and the content of Fe (x) was 2.0. The coercivity is about 8.4 Oe, and the saturation magnetization is 78.0 emu/g.
2.Sintering samples
①The powder with better magnetic properties was obtained when the samples were sintered at 1000 ℃ and the content of Fe (x) was 2.0. The coercivity is about 1.5 Oe, and the saturation magnetization is 79.5 emu/g.
②When x is 1.8 and the sintering temperature is 1000℃, the initial permeability of material is the highest, close to 125, and the roll-off frequency is about 20 MHz. As x increases, the initial permeability decreases, but the roll-off frequency of sample increases. When x=2.1 and 2.2, the roll-off frequency is bigger than 100 MHz. |
| URL | 查看原文
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| Language | 中文
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| Document Type | 学位论文
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| Identifier | https://ir.lzu.edu.cn/handle/262010/229451
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| Collection | 物理科学与技术学院
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Recommended Citation
GB/T 7714 |
于国建. 溶胶凝胶法制备NiCuZn铁氧体的研究[D]. 兰州. 兰州大学,2013.
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