Sol-gel synthesis of 8 nm magnetite (Fe3O4) nanoparticles and their magnetic properties
Sol-gel synthesis of 8 nm magnetite (Fe3O4) nanoparticles and their magnetic properties
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DOI：
10.1016/j.spmi.2012.07.009
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发表时间：
2012-10-01
影响因子：
3.1
通讯作者：
Bououdina, M.
中科院分区：
文献类型：
--
作者：
Lemine, O. M.;Omri, K.;Bououdina, M.
采用溶胶-凝胶法成功合成了磁铁矿（Fe3O4）纳米颗粒。通过X射线衍射(XRD)、场发射扫描电子显微镜(FE-SEM)、X射线能量色散分析(EDAX)、透射电子显微镜(TEM)、超导量子干涉装置(SQUID)和穆斯堡尔谱对所得纳米粒子进行了表征。 XRD 和穆斯堡尔测量表明所获得的纳米颗粒是单相的。 TEM 分析显示存在球形纳米颗粒，其尺寸分布均匀，约为 8 nm。 SQUID 测量证实了室温铁磁体行为。讨论了纳米颗粒的形成机制以及与最新结果的比较。最后，鉴于其饱和磁化强度，合成的纳米粒子为热疗应用提供了潜在的候选者。 (C) 2012 Elsevier Ltd. 保留所有权利。
Magnetite (Fe3O4) nanoparticles were successfully synthesized by a sol-gel method. The obtained nanoparticles were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive analysis by X-ray (EDAX), transmission electron microscopy (TEM), superconducting quantum interference device (SQUID) and Mossbauer spectrometry. XRD and Mossbauer measurements indicate that the obtained nanopartides are single phase. TEM analysis shows the presence of spherical nanoparticles with homogeneous size distribution of about 8 nm. Room temperature ferromagnetics behavior was confirmed by SQUID measurements. The mechanism of nanoparticles formation and the comparison with recent results are discussed. Finally, the synthesized nanoparticles present a potential candidate for hyperthermia application given their saturation magnetization. (C) 2012 Elsevier Ltd. All rights reserved.