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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Magnetite nanowires in MCM-41 type mesoporous silica templates
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Magnetite nanowires in MCM-41 type mesoporous silica templates

机译：MCM-41型中孔二氧化硅模板中的磁铁矿纳米线

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MCM-41 mesoporous material was chosen as a template of very small Fe3O4 particles. The results of structural and magnetic studies of magnetite nanowires are reported. The average length of these nanowires is about 70 nm and their diameter is 3 mn. Magnetite polycrystalline nanowires were characterized by means of X-ray diffraction and Fe-57 Mossbauer spectroscopy (MS). Almost 80% of the particles exist in a superparamagnetic state at room temperature. Mbssbauer measurements also provided evidence that the composites displayed a distribution of magnetic particles by size. As a result, strong changes of superparamagnetic and magnetic relative contributions along with temperature were observed. (c) 2008 Elsevier B.V. All rights reserved.
机译：选择MCM-41介孔材料作为非常小的Fe3O4颗粒的模板。报道了磁铁矿纳米线的结构和磁性研究的结果。这些纳米线的平均长度约为70 nm，其直径为3 mn。磁铁矿多晶纳米线通过X射线衍射和Fe-57 Mossbauer光谱（MS）进行表征。在室温下几乎有80％的颗粒以超顺磁性状态存在。 Mbssbauer测量还提供了证据，表明复合材料按尺寸显示了磁性颗粒的分布。结果，观察到超顺磁性和磁性相对贡献随温度的强烈变化。 （c）2008 Elsevier B.V.保留所有权利。

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