Synthesis of iron-nickel nanoparticles via a nonaqueous organometallic route
Synthesis of iron-nickel nanoparticles via a nonaqueous organometallic route
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通过非水有机金属途径合成铁镍纳米粒子
DOI：
10.1016/j.matchemphys.2008.07.118
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发表时间：
2009-01-15
影响因子：
4.6
通讯作者：
Peng, Dong-Liang
中科院分区：
文献类型：
--
作者：
Chen, Yuanzhi;Luo, Xiaohua;Peng, Dong-Liang
通过非水溶液相法合成了Fe-Ni纳米颗粒，该方法使用了在油胺中的乙酰丙酮合镍（II）和乙酰丙酮合铁（III）的热分解，而没有进一步的还原剂。粉末X射线衍射和透射电子显微镜分析表明，所合成的Fe-Ni纳米粒子具有面心立方（fcc）晶体结构，并呈现出多分散性。通过在反应体系中引入表面活性剂可以进一步控制颗粒的形貌和尺寸分布，通过改变金属前驱体的初始摩尔比也可以在一定程度上调节最终的化学组成。室温下的磁性测量揭示了合成的纳米粒子的铁磁特性。随着Fe含量的增加，已观察到饱和磁化强度增加。(C)2008 Elsevier B. V.保留所有权利。
Fe-Ni nanoparticles have been synthesized via a nonaqueous solution-phase approach using thermal decomposition of Ni(II) acetylacetonate and Fe(III) acetylacetonate in oleylamine without further reducing agents. The analyses of powder X-ray diffraction and transmission electron microscopy show that the as-synthesized Fe-Ni nanoparticles possess a face-centered cubic (fcc) crystalline structure and exhibit a polydispersed characteristic. The particle morphology and size distribution can be further controlled by introducing surfactants in the reaction system, and the final chemical composition also can be tuned to some extent by varying the initial molar ratios of metal precursors. Room temperature magnetic measurements reveal a ferromagnetic characteristic for the as-synthesized nanoparticles. An increased saturation magnetization has been observed with increasing Fe contents. (C) 2008 Elsevier B.V. All rights reserved.