| 钴铁氧体纳米粒子制备及其镧掺杂的磁性能研究 |
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| 引用本文： | 段红珍,李巧玲,蔺向阳,李凤生.钴铁氧体纳米粒子制备及其镧掺杂的磁性能研究[J].材料科学与工艺,2009,17(1):88-91. |
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| 作者姓名： | 段红珍 李巧玲 蔺向阳 李凤生 |
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| 作者单位： | 段红珍,DUAN Hong-zhen(南京理工大学,化工学院,南京,210094;中北大学,理学院,化学系,太原,030051);李巧玲,LI Qiao-ling(中北大学,理学院,化学系,太原,030051);蔺向阳,李凤生,LIN Xiang-yang,LI Feng-sheng(南京理工大学,化工学院,南京,210094)
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| 基金项目： | 国家自然科学基金，中国人民总装备部预先研究基金 |
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| 摘 要： | 为了制备性能良好的钴铁氧体及改善其磁性能,通过改进的溶胶凝胶自蔓延燃烧法成功地制备了钴铁氧体(CoFe2O4)及掺镧(La)钴铁氧体纳米粒子.采用X射线衍射(XRD),透射电镜(TEM)、能谱分析(EDS)、振动样品磁场计(VSM)对所得粒子进行了结构、形貌、成分及磁性能表征.测试结果表明,利用改进的溶胶凝胶法制得钴铁氧体粒度均匀,且成相温度较低,500℃煅烧1h时平均粒径12nm左右;通过掺杂稀土镧元素对所得铁氧体的相结构有较强的影响,所得掺镧钴铁氧体与目标产物一致;所得钴铁氧体具有较高的矫顽力(737.33Oe),并且通过稀土元素镧的掺杂提高了钴铁氧体的矫顽力.
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| 关 键 词： | 钴铁氧体 纳米粒子 镧 溶胶凝胶 矫顽力 |
Synthesis of cobalt ferrite nanoparticles and effect of doped lanthanum on magnetic properties of cobalt ferrite |
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| DUAN Hong-zhen,LI Qiao-ling,LIN Xiang-yang,LI Feng-sheng.Synthesis of cobalt ferrite nanoparticles and effect of doped lanthanum on magnetic properties of cobalt ferrite[J].Materials Science and Technology,2009,17(1):88-91. |
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| Authors: | DUAN Hong-zhen LI Qiao-ling LIN Xiang-yang LI Feng-sheng |
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| Affiliation: | 1. School of Chemical Engineering;Nanjing University of Science and Technology;Nanjing 210094;China;2.Dept. of Chemistry;School of Science;North University of China;Taiyuan 030051;China |
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| Abstract: | In order to prepare the cobalt ferrite which has excellent properties and improve its magnetic properties,the cobalt ferrite(CoFe2O4)and doped lanthanum(La)cobalt ferrite nanoparticles were synthesized by the self-propagation combustion of material made by modified sol-gel method. The properties of the particles were characterized using various techniques,such as X-ray diffraction (XRD),transmission electron microscope (TEM),energy dispersive X-ray spectrometer (EDS) and vibrating sample magnetometer (VSM).... |
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| Keywords: | cobalt ferrite nanoparticles lanthanum sol-gel coercive force |
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