Co纳米线阵列的掠入射中子小角散射研究

Grazing Incidence Small Angle Neutron Scattering Study of Co Nanowire Array

本文采用掠入射中子小角散射(GISANS)技术,研究了沉积在多孔阳极氧化铝(AAO)模板中的Co磁性纳米线阵列的空间结构,利用计算机软件对GISANS实验进行了理论模拟,并与扫描电子显微镜(SEM)观察的结果进行比较。结果表明,GISANS实验结果、GISANS理论模拟结果和SEM实验结果三者相吻合。纳米线直径约为60 nm,纳米线中心平均距离约为121 nm,垂直于样品表面相互平行排列,在样品平面内呈现出二维局域六角有序排布。本工作证明了GISANS实验技术结合计算机理论模拟,是研究纳米线阵列及类似纳米体系的有力手段。

Using grazing incidence small angle neutron scattering(GISANS)and scanning electron microscopy(SEM)technologies,the spatial structure of Co magnetic nanowire array deposited in porous anodized aluminum oxide(AAO)template was studied.The theoretical GISANS pattern was simulated by means of the computer software.The result shows that the experimental GISANS result,the simulated GISANS result and the SEM result agree well with each other.The diameter of the nanowire is about 60 nm,and the average distance between the centers of the nanowire is about 121 nm.The nanowires are arranged perpendicularly to the surface of the sample and parallel to each other.It is proved that the GISANS technology combined with computer simulation is a powerful tool for studying nanowire array and similar nanostructure.