One-step process to fabricate Fe core/Fe-dimethylsulfoxide shell coaxial nanocables
One-step process to fabricate Fe core/Fe-dimethylsulfoxide shell coaxial nanocables
复制标题
一步法制备铁核/铁-二甲基亚砜壳同轴纳米电缆
DOI：
10.1021/cm702800v
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发表时间：
2008-01
影响因子：
8.6
通讯作者：
Fu, Junli
中科院分区：
文献类型：
--
作者：
Xue, Desheng;Yan, Zhongjie;Gao, Daqiang;Xu, Yan;Fu, Junli
在含17g/L FeCl3的二甲基亚砜溶液中，于40℃下电沉积了Fe/Fe-二甲基亚砜(DMSO)同轴纳米线。这是首次报道用简单的一步法电沉积法制备纳米玻璃。预测了Fe-DMSO鞘为[Fe(DMSO)(4)Cl2]和[Fe(DMSO)(3)Cl3]的配位化合物，它们在室温下为无定形顺磁性。铁芯为体心立方结构，择优取向为(110)。通过改变FeCl3在DMSO溶液中的浓度和电沉积温度可以精确地控制所得到的纳米结构的形貌。Fe-DMSO护套的外壁非常薄，因此，纳米光缆的外径与中心铁芯的直径几乎相同，约为40 nm，长径比为100。阵列表现出明显的各向异性，沿纳米线的磁化轴容易磁化，这是一种有用的磁存储材料。
The coaxial nanocables of Fe/Fe-dimethylsulfoxide (DMSO) were electrodepositied at 40 degrees C in the solution of DMSO with 17 g/L FeCl3. It is the first report about the preparation of nanocables by electrodeposition in a simple one-step process. The Fe-DMSO sheaths are predicted as coordination compounds of [Fe(DMSO)(4)Cl-2)] and [Fe(DMSO)(3)Cl-3] that are amorphous in structure and paramagnetic at room temperature. The Fe cores are bcc structure with a preferred orientation of (110). The morphology of resulting nanostructures can be precisely controlled by varying the concentration of FeCl3 in DMSO solution and the elelctrodeposited temperature. The walls of Fe-DMSO sheaths are very thin; therefore, the outer diameters of nanocables are nearly the same as the central Fe cores about 40 nm, with an aspect ratio of 100. The arrays exhibit an obvious anisotropy with the easy magnetizing axis along the length of nanocables, which are useful magnetic storage materials.