| 聚苯胺-镧掺杂LiNi铁氧体纳米复合物的合成和磁性能研究 |
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| 引用本文： | 李良超,蒋静,徐烽,谢云龙. 聚苯胺-镧掺杂LiNi铁氧体纳米复合物的合成和磁性能研究[J]. 浙江师范大学学报(自然科学版), 2006, 29(4): 425-429 |
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| 作者姓名： | 李良超 蒋静 徐烽 谢云龙 |
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| 作者单位： | 浙江师范大学,化学与生命科学学院,物理化学研究所,浙江,金华,321004 |
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| 基金项目： | 浙江省自然科学基金资助项目(Y405038)，金华市科技计划项目(2004-2-157) |
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| 摘 要： | 通过溶液聚合法制备了聚苯胺-镧掺杂L iN i铁氧体(L iN i0.5La0.08Fe1.92O4)纳米复合物,采用X-射线衍射、傅立叶变换红外光谱、紫外-可见光谱、热失重分析、原子力显微镜和振动样品磁强计研究了复合材料的结构、形貌和磁性能.研究表明,铁氧体颗粒与聚苯胺之间存在化学键合作用,铁氧体纳米粒子的引入能够提高聚苯胺的热稳定性,并对复合材料的形貌有一定的影响.在外加磁场作用下,复合材料表现出亚铁磁性物质具有的磁滞现象,且其饱和磁化强度和矫顽力都比纯铁氧体小.
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| 关 键 词： | LiNi铁氧体 掺杂 聚苯胺 镧 纳米复合材料 磁学性质 |
| 文章编号： | 1001-5051（2006）04-0425-05 |
| 收稿时间： | 2006-04-24 |
| 修稿时间： | 2006-06-28 |
Synthesis and magnetic properties of La-doped LiNi ferrite/polyaniline nanocomposite |
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| LI Liangchao,JIANG Jing,XU Feng,XIE Yunlong. Synthesis and magnetic properties of La-doped LiNi ferrite/polyaniline nanocomposite[J]. Journal of Zhejiang Normal University Natural Sciences, 2006, 29(4): 425-429 |
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| Authors: | LI Liangchao JIANG Jing XU Feng XIE Yunlong |
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| Affiliation: | College of Chemistry and Life Science, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua Zhejiang 321004, China |
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| Abstract: | Polyaniline(PANI)-LiNi_(0.5)La_(0.08)Fe_(1.92)O_4 nanocomposite were synthesized by polymerization of aniline in the presence of LiNi_(0.5)La_(0.08)Fe_(1.92)O_4 ferrite.The structure,morphologies and magnetic properties of products were characterized by powder Xray diffraction,Fourier transform infrared,UV-vis spectra,thermogravimetric analysis,atomic force microscopy and vibrating sample magnetometer.The results indicated the bonding interaction between ferrite and PANI in the composite.The incorporation of ferrite improved the thermal stability of PANI and had effection on the morphology of the composite.Under magnetic field the nanocomposite exhibited the hysteresis loops of the ferrimagnetic nature at room temperature,and the values of the saturation magnetization and coercivity for the composite were less than that of the pure ferrite. |
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| Keywords: | LiNi ferrite doped polyaniline La nanocomposite magnetic properties |
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