| 沸腾回流法制备的MnZn铁氧体纳米粉末 |
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| 引用本文： | 戴慧萃,刘仲武,曾德长,余红雅.沸腾回流法制备的MnZn铁氧体纳米粉末[J].磁性材料及器件,2010,41(1):20-23,31. |
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| 作者姓名： | 戴慧萃 刘仲武 曾德长 余红雅 |
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| 作者单位： | 华南理工大学,材料科学与工程学院,广东广州,510640 |
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| 基金项目： | 国家自然科学基金资助项目(50874050);;广东省自然科学基金资助项目(8151064101000084);;广东省科技计划资助项目(2008B010600005);;国家自然科学基金委员会-广东省联合基金重点资助项目(U0734001) |
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| 摘 要： | 以δ-FeOOH为前驱体,采用沸腾回流法直接合成了尖晶石结构的MnZn铁氧体纳米颗粒。用X射线衍射仪(XRD)、透射电镜(TEM)和振动样品磁强计(VSM)对其相成分、显微结构和磁性能进行了表征。详细探讨了共沉淀的pH值和回流反应时间对生成物化学组成和磁性能的影响。结果表明,通过调节pH值和回流时间可以得到从小于10nm到大于20nm不同粒径的锰锌铁氧体颗粒,获得完全产物的最佳回流时间为6h。pH值对反应剧烈程度及磁性能有很大影响,共沉淀pH值为13.0左右时获得的制备态纳米粉末尺寸为20nm,饱和磁化强度达46A·m2/kg。
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| 关 键 词： | MnZn铁氧体 沸腾回流法 纳米颗粒 pH值 回流时间 磁性能 |
Mn-Zn Ferrite nano-powders Prepared by Co-precipitation and Refluxing Method |
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| DAI Hui-cui,LIU Zhong-wu,ZENG De-chang,YU Hong-ya.Mn-Zn Ferrite nano-powders Prepared by Co-precipitation and Refluxing Method[J].Journal of Magnetic Materials and Devices,2010,41(1):20-23,31. |
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| Authors: | DAI Hui-cui LIU Zhong-wu ZENG De-chang YU Hong-ya |
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| Affiliation: | DAI Hui-cui,LIU Zhong-wu,ZENG De-chang,YU Hong-ya School of Materials Science , Engineering,South China University of Technology,Guangzhou 510640,China |
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| Abstract: | The spinel-type Mn-Zn ferrite nano-powders were prepared by co-precipitation and refluxing method using δ-FeOOH as a precursor. The effects of refluxing time and the pH value of co-precipitation solution on the phase structure, morphology and magnetic properties of as-prepared powders were studie dusing XRD, transmission electron microscopy and vibration sample magnetometer. The results showed that the optimum refluxing time for complete reaction is 6h. The size of Mn_(0.5)Zn_(0.5)Fe_2O_4 powders varied between <10nm and >20nm. It was also found that the mean size of the nano-powders can be controlled by pH value of the co-precipitation solution and as-prepared powders with mean particle size of 20 nm and saturation magnetization of 46 A·m~2/kg were prepared when the pH value of co-precipitation solution is 13. |
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| Keywords: | Mn-Zn ferrite refluxing nanoparticle pH value refluxing time magnetic properties |
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