The Effect of Surface Modification on the Magnetic Properties of CoFe(2)O(4) Nano-Particles Synthesized by the Hydrothermal Method

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	The Effect of Surface Modification on the Magnetic Properties of CoFe(2)O(4) Nano-Particles Synthesized by the Hydrothermal Method
	Y. Zhang; C. L. Fei; Y. Liu; R. J. Wang; G. L. Yan; R. Xiong; J. Shi
	2010
发表期刊	Journal of Nanoscience and Nanotechnology
ISSN	1533-4880
卷号	10 期号:10 页码:6395-6399
摘要	Cobalt ferrite (CoFe(2)O(4)) nano-particles were synthesized by the hydrothermal method with the addition of a surfactant sodium bis(2-ethylhexyl) sulphosuccinate (AOT). Characterization measurements including X-ray diffraction, transmission electron microscopy and fourier transform infrared spectroscopy showed that all the final products were single-phase CoFe(2)O(4) nano-crystals with AOT molecules bonding to the surfaces, the average crystallite sizes were all near 25 nm, and the lattice constant increased with the increasing mass of AOT. The magnetic hysteresis loops measured at room temperature indicated that the bonding of the AOT to the surfaces led to an increase of the saturation magnetization (Ms), the coercivity (Hc) and the remanence ratio (Mr/Ms). Furthermore, as the concentration of AOT reached the critical micelle concentration (CMC), turning points were observed in the the curves of Hc, Mr/Ms and K(eff) (effective magnetic anisotropy constants) versus. the mass of AOT due to the formation of the AOT micelles.
部门归属	[yan, gaolin] wuhan univ, sch phys & technol, wuhan 430072, peoples r china. [zhang, yue; fei, chunlong; liu, yong; wang, rongjuan; xiong, rui; shi, jing] wuhan univ, dept phys, wuhan 43007z, peoples r china. [zhang, yue; fei, chunlong; liu, yong; wang, rongjuan; xiong, rui; shi, jing] wuhan univ, minist educ, key lab acoust & photon mat & devices, wuhan 43007z, peoples r china. [zhang, yue; xiong, rui; shi, jing] hubei key lab organ & polymer optoelect mat, wuhan 430072, peoples r china. [shi, jing] acad sinica, int ctr mat phys, shenyang 110015, peoples r china.;yan, gl (reprint author), wuhan univ, sch phys & technol, wuhan 430072, peoples r china
关键词	Surface Modification Cofe(2)o(4) Nano-particles Magnetic Properties Hydrothermal Core-shell Particles Cobalt Ferrite Fe3o4 Nanoparticles Thin-films Nanocomposite Silica Temperature Nanocrystals Powders Spheres
URL	查看原文
WOS记录号	WOS:000280361400016
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31729
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. Zhang,C. L. Fei,Y. Liu,et al. The Effect of Surface Modification on the Magnetic Properties of CoFe(2)O(4) Nano-Particles Synthesized by the Hydrothermal Method[J]. Journal of Nanoscience and Nanotechnology,2010,10(10):6395-6399.
APA	Y. Zhang.,C. L. Fei.,Y. Liu.,R. J. Wang.,G. L. Yan.,...&J. Shi.(2010).The Effect of Surface Modification on the Magnetic Properties of CoFe(2)O(4) Nano-Particles Synthesized by the Hydrothermal Method.Journal of Nanoscience and Nanotechnology,10(10),6395-6399.
MLA	Y. Zhang,et al."The Effect of Surface Modification on the Magnetic Properties of CoFe(2)O(4) Nano-Particles Synthesized by the Hydrothermal Method".Journal of Nanoscience and Nanotechnology 10.10(2010):6395-6399.