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首页> 外文会议>International Symposium on Eco-Materials Processing amp; Design; 20060108-11; Chengdu(CN) >Synthesis and Magnetic Properties of Fe/SiO_2 Nanocomposite Powders by the Chemical Vapor Condensation Process
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Synthesis and Magnetic Properties of Fe/SiO_2 Nanocomposite Powders by the Chemical Vapor Condensation Process

机译：化学气相冷凝法合成Fe / SiO_2纳米复合粉的磁性能

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摘要

Fe/SiO_2 nanocomposite powders were synthesized by the chemical vapor condensation(CVC) process. Phase and microstructures of the as-prepared powders were investigated with CVC experimental parameters by XRD, TEM and VSM. The analysis of XRD patterns revealed that the Fe/SiO_2 powders could be produced above 700℃. With increasing reaction temperature, the XRD peaks became clearer. The size of powders was about 50nm at 1100℃. The Fe/SiO_2 powders showed an intricate long-stand structure attributed to their magnetic characteristics. TEM results revealed that the Fe powders were covered by SiO_2 layer fully or partially depending on the experimental condition. The saturation magnetization and the coercive force of the as-sytheised powders were investigated with the decomposition temperature.
机译：Fe / SiO_2纳米复合粉是通过化学气相凝结法合成的。通过XRD，TEM和VSM，采用CVC实验参数研究了所制备粉末的相和微观结构。 X射线衍射图谱分析表明，Fe / SiO_2粉末可在700℃以上制备。随着反应温度的升高，XRD峰变得更清晰。在1100℃下，粉末的尺寸约为50nm。 Fe / SiO_2粉末由于其磁性而表现出复杂的长期结构。 TEM结果表明，根据实验条件，Fe粉被SiO_2层完全或部分覆盖。研究了合成粉末的饱和磁化强度和矫顽力以及分解温度。

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