| 纳米级Mn-Zn软磁铁氧体磁粉溶胶-凝胶法制备 |
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| 引用本文： | 杨晓明,杨新科. 纳米级Mn-Zn软磁铁氧体磁粉溶胶-凝胶法制备[J]. 宝鸡文理学院学报(自然科学版), 2007, 27(4): 279-281 |
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| 作者姓名： | 杨晓明 杨新科 |
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| 作者单位： | 西北有色地质研究院,陕西,西安,710054;宝鸡文理学院,化学化工系,陕西,宝鸡,721007 |
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| 基金项目： | 陕西省教育厅专项基金(99JK009)资助项目 |
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| 摘 要： | 目的提高超细粉合成反应活性,降低合成温度,改善超细粉烧结性能,从而提高锰锌铁氧体的性能。方法应用溶胶-凝胶法制备软磁Mn-Zn铁氧体磁粉。用X射线衍射(XRD)和透射电镜(TEM)对粉体材料进行分析表征,并用振动样品磁强计(VSM)测定样品的饱和磁化强度和矫顽力。结果所得样品为纳米级单相Mn-Zn铁氧体,其晶粒大小约为40 nm,M=0.14 552 EMU,HC=11 480 Oe,这表明该纳米级Mn-Zn铁氧体不具有超顺磁特性,而具有很好的活性。结论采用溶胶-凝胶法制备的纳米级Mn-Zn铁氧体磁粉,可以用来制备高性能的软磁Mn-Zn铁氧体材料。
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| 关 键 词： | Mn-Zn铁氧体纳米磁粉 溶胶-凝胶转变 合成 磁性能 |
| 文章编号： | 1007-1261（2007）04-0279-03 |
| 收稿时间： | 2007-03-01 |
| 修稿时间： | 2007-04-29 |
Soft magnetic Mn-Zn ferrite nanoparticles prepared by sol-gel |
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| YANG Xiao-ming,YANG Xin-ke. Soft magnetic Mn-Zn ferrite nanoparticles prepared by sol-gel[J]. Journal of Baoji College of Arts and Science(Natural Science Edition), 2007, 27(4): 279-281 |
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| Authors: | YANG Xiao-ming YANG Xin-ke |
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| Abstract: | Aim To improve superfine powder reaction activity,low synthesis temperature could promote superfine powder calcining property and improve Mn-Zn ferrite properties.Methods Soft magnetic Mn-Zn ferrite nanoparticles were prepared by using sol-gel,the powder is analyzed and characterized by XRD and TEM.The magnetic measurements(saturation magnetization and coercivity) were carried out with a vibrating sample magnetometer(VSM).Results The sample is nanometer single phase Mn-Zn ferrities and the corresponding grain size is about 40 nm,M=0.14 552 EMU and HC=11 480 Oe,which shows that the nanoparticles is not superparamagnetic,but they are highly active.Conclution Soft magnetic Mn-Zn ferrite nanoparticles were prepared by using sol-gel and can be used to fabricate high performance soft magnetic Mn-Zn ferrite materials. |
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| Keywords: | Mn-Zn ferrites nanoparticles sol-gel transition synthesis magnetic properties |
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