| 利用稀土镝对Fe3O4纳米磁粒子改性的研究 |
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| 引用本文： | 邓真娟,郭园,张茂润.利用稀土镝对Fe3O4纳米磁粒子改性的研究[J].淮南工业学院学报,2010(2):51-54. |
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| 作者姓名： | 邓真娟 郭园 张茂润 |
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| 作者单位： | 安徽理工大学化学工程学院,安徽淮南232001 |
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| 摘 要： | 采用湿化学法制备了稀土镝铁氧体纳米磁粒子,并用月桂酸进行了表面修饰。利用透射电子显微镜（TEM）、X射线衍射仪（XRD）、振动样品磁强计（VSM）等仪器对产物进行表征,研究Dy3＋的掺杂对Fe3O4纳米磁粒子磁性能的影响;同时对镝铁氧体磁粒子形貌、粒径分布、晶型结构进行了分析。结果表明,用适量的稀土Dy3＋对Fe3O4纳米磁粒子进行掺杂,可以显著地提高其磁性能,且晶型结构不变;制备的镝铁氧体磁粒子的平均粒径约13.2nm,表面修饰后的磁粒子室温下的饱和磁化强度为189.4mT,具有超顺磁性。
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| 关 键 词： | Fe3O4纳米磁粒子 稀土镝 磁性能 改性 |
Study on Performance of Fe_3O_4 Magnetic Nano-particles Reshaped by Dysprosium |
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| DENG Zhen-juan,GUO Yuan,ZHANG Mao-run.Study on Performance of Fe_3O_4 Magnetic Nano-particles Reshaped by Dysprosium[J].Journal of Huainan Institute of Technology(Natural Science),2010(2):51-54. |
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| Authors: | DENG Zhen-juan GUO Yuan ZHANG Mao-run |
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| Affiliation: | (School of Chemical Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China) |
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| Abstract: | Rare earth dysprosium ferrite magnetic nano-particles were prepared by wet chemistry method and modified with lauric acid.Dy3＋-doping ferrite nano-particles were characterized by transmission electron microscopy（TEM）,X-ray diffraction（XRD）,and vibrating sample magnetometer（VSM）,respectively.The influence of Dy3＋-doping on Fe3O4 nano-particles magnetism was studied.The appearance,particle diameter distribution,crystal form construction of dysprosium ferrite nano-magnetic particles were analyzed.The result shows,Proper amount of Dy3＋-doping will improve the saturation magnetization of Fe3O4 magnetic nano-particles,and crystal form construction were not changed.The mean diameter this study prepared is 13.2 nm,and the modified paticles＇ saturation magnetization intensity is 189.4 mT in ordinary temperature,which has superparamagnetism. |
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| Keywords: | Fe3O4 magnetic nano-particles rare earth dysprosium magnetic performance reshaped performance |
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