采用混合碱媒介法制备铁酸钴磁性纳米粉体,探索了制备工艺,利用X射线衍射仪、透射电镜、振动样品磁强计对样品的结构和磁性能进行了研究.结果表明:以硝酸盐或醋酸盐为原料用混合碱法可制得粒度均匀、粒径范围在10～50 nm的铁酸钴纳米粉,所制备的样品具有粒径小、粒度均匀、分散性较好的特点,中等饱和磁化强度、高矫顽力,是性能优良的磁性材料.
Cobalt ferrite magnetic nano-powder was prepared by composite-hydroxide-mediate method, the preparing process was studied. The structure and magnetic properties of the samples are measured and analyzed by X-ray diffraction (XRD), transmission electron microscopy (TEM) and vibrating sample magnetometer (VSM). The results showed that cobalt ferrite with uniform particle sizes in the range of 10～50 nm can be obtained using nitrates or acetates as raw materials. The synthesized nano-particles are small in sizes with uniform diameter, and have a good disperability. Their magnetic properties are middle saturation magnetization and high coercive force. The cobalt ferrite synthesized shows a better quality.
参考文献
| [1] | Santi Maensiri;Chivalrat Masingboon;Banjong Boonchom .A simple route to synthesize nickel ferrite (NiFe_2O_4) nanoparticles using egg white[J].Scripta materialia,2007(9):797-800. |
| [2] | Thang PD;Rijnders G;Blank DHA .Spinel cobalt ferrite by complexometric synthesis[J].Journal of Magnetism and Magnetic Materials,2005(3):251-256. |
| [3] | Lavela P;Tirado J L .CoFe_2O_4 and NiFe_2O_4 Synthesized by Sol-gel Procedures for Their Use as Anode Materials for Li ion Batteries[J].Journal of Power Sources,2007,172:379-387. |
| [4] | N. Millot;S. Le Gallet;D. Aymes .Spark plasma sintering of cobalt ferrite nanopowders prepared by coprecipitation and hydrothermal synthesis[J].Journal of the European Ceramic Society,2007(2/3):921-926. |
| [5] | Daliya S.Mathew;Ruey-Shin Juang .An overview of the structure and magnetism of spinel ferrite nanoparticles and their synthesis in microemulsions[J].Chemical engineering journal,2007(1/3):51-65. |
| [6] | M. P. Gonzalez-Sandoval;A. M. Beesley;M. Miki-Yoshida .Comparative study of the microstructural and magnetic properties of spinel ferrites obtained by co-precipitation[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2004(1/2):190-194. |
| [7] | Sang Won Lee;Seongtae Bae;Yasushi Takemura;In-Bo Shim;Tae Min Kim;Jeongryul Kim;Hong Jae Lee;Shayne Zurn;Chul Sung Kim .Self-heating characteristics of cobalt ferrite nanoparticles for hyperthermia application[J].Journal of Magnetism and Magnetic Materials,2007(2 Pt.3):2868-2870. |
| [8] | Liu H;Hu CG;Wang ZL .Composite-hydroxide-mediated approach for the synthesis of nanostructures of complex functional-oxides[J].Nano letters,2006(7):1535-1540. |
| [9] | 林其禾.铁氧体工艺原理[M].上海:上海科学技术出版社,1987:14. |
| [10] | Mathew George;Asha Mary John;Swapna S. Nair .Finite size effects on the structural and magnetic properties of sol-gel synthesized NiFe_2O_4 powders[J].Journal of Magnetism and Magnetic Materials,2006(1):190-195. |
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