AAO模板合成法制备金属Ni磁性纳米线阵列的研究  

SYNTHESIS AND CHARACTERIZATION OF FERROMAGNETIC NICKEL NANOWIRE ARRAYS VIA AAO TEMPLATES

作　　者：严彪[1] 李同[1] 安建军[1] 董鹏[1] 王华钰[1] 

机构地区：[1]同济大学材料科学与工程学院上海市金属功能材料重点实验室,上海200092

出　　处：《上海金属》2010年第5期17-20,共4页Shanghai Metals

摘　　要：利用电化学沉积法,在AAO模板上制备了铁磁性金属Ni纳米线有序阵列。通过XRD、SEM等分析测试方法研究了制备工艺与Ni纳米线结构的关系,并在此基础上研究了结构对其磁性能的影响。在恒定沉积电压为-2 V时,适当的电流密度(2 mA/cm2)以及较长的沉积时间(9 h),有助于得到沿着[220]方向的高织构性纳米线。另外,相对于多晶结构,单晶或高织构性结构的Ni纳米线具有较高的矫顽力、剩磁及更显著的磁各向异性。Ferromagnetic Ni nanowire arrays were electrodeposited by using AAO templates.The relation between the deposition condition and the microstructure of nanowires was investigated by XRD and SEM methods,upon which the effect of microstructure on the magnetic properties was studied.The results indicated that with an optimal current density and a longer deposition time,the nanowires tend to form highly-textured or single-crystalline structures rather than polycrystalline structure.Moreover,the highly-textured samples were of larger coercivity,higher residual magnetization and significant anisotropy.

关 键 词：NI纳米线 电化学沉积 AAO模板 磁性能 

分 类 号：TB383[一般工业技术—材料科学与工程]