| 纳米BaFe12O19纤维的电纺制备及磁性研究 |
| Fabrication and Magnetic Properties of Nano-BaFe12O19 Fibre by Electrospinning |
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| 摘要: 以PVP的乙酸溶液为助纺剂，采用静电纺丝技术制得了纳米BaFe12O19纤维，利用XRD和EDS对样品的物相和成分进行了分析，利用SEM和TEM对样品形貌和粒径进行了表征，并利用振动样品磁强计(VSM)对样品进行了磁性能研究。结果表明，BaFe12O19/PVP复合纤维经过800 ℃煅烧后，制得了纯净的BaFe12O19纳米纤维，纤维平均直径为150 nm，呈现出多晶结构，矫顽力为4 164.9 G，与粉体相比，矫顽力有较大提升，有望扩展BaFe12O19在高密度垂直记录材料、微纳米电子材料和微波材料等领域的应用。 |
| 关键词: 纳米纤维 BaFe12O19 静电纺丝 |
| 基金项目: |
| Abstract: Nano-BaFe12O19 fibre were obtained using a process combining the citrate precursor method and electrospinning technique. In the process, Spinnability was conferred by the addition of poly(vinyl pyrrolidone) and acetic acid as a spinning aid. The materials were characterized by XRD, SEM, EDS, TEM, FTIR and vibrating sample magnetometer(VSM). It is observed that Nano-BaFe12O19 fibre are obtained after calcining BaFe12O19/PVP composite fibre at 800 ℃. They are Polycrystalline with an average diameter of 150 nm. And Nano-BaFe12O19 fibre have unique magnetic properties, with much enhanced coercive forces relative to bulk materials. The novel magnetic fibre can potentially be used in high-density magnetic recording, micro/nano electronic devices, and microwave devices. |
| Keywords: nanofibre BaFe12O19 electrospinning |
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| 郭远征,李从举,王娇娜.纳米BaFe12O19纤维的电纺制备及磁性研究[J].无机化学学报,2009,25(6):1018-1021. |
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