摘要
采用电化学沉积法，在氧化铝模板中成功制备了直径50nm的Fe纳米线的高度有序阵列。纳米线的结构和磁学特性分别用透射电子显微镜（TEM），扫描电子显微镜（SEM），X射线衍射仪（XRD）和振动样品磁力计（VSM）测试。结果表明，Fe纳米线是以fcc结构存在。当外加磁场与纳米线的线轴平行时，测得的矫顽力为21000e，剩磁比为0．89，而当外加磁场与纳米线线轴垂直时，所测得的矫顽力仅为1600e，剩磁比为0．2。这表明纳米线阵列具有明显的各向异性，纳柴癌的易妯方向为纳粜姥姥妯方向．
High ordered Fe nanowires arrays with diameter of 50 nm have been fabricated successfully by electro - deposition into the pores of a porous anodic aluminum oxide （AAO） template. The structure and magnetic properties were characterized by transmission electron microscopy （TEM） , scanning electron microscopy （SEM） , X - ray diffraction （XRD） and vibrating sample magnetometer （VSM）, respectively. Such nanowire arrays are in fcc structure. The coercivity is 2100Oe and the squareness is about 0. 89 when the applied field is parallel to the axis of Fe nanowire arrays in as deposited sample. However, the coercivity is only 160 Oe and the squareness is about 0.2 when applied field is perpendicular to the axis of Fe nanowire arrays. The results indicate that nanowires have excellent perpendicular anisotropy with their easy axis parallel to nanowire arrays.
出处
《中国材料科技与设备》
2006年第4期88-90,共3页
Chinese Materials Science Technology & Equipment
基金
广东省自然科学基金奖助项目（021286）
深圳市科技基金项目
关键词
氧化铝模板
Fe纳米线
电沉积
Anodic aluminum oxide （AAO） template
Fe nanowires
Electro- deposition
