摘要
以硫酸溶液为电解质,采用两步电化学阳极氧化法制备了氧化铝有序多孔膜,孔径为20nm,孔间距为50nm左右,孔洞密度为4.5×1010个/cm2.以此多孔膜为模板,脉冲电压电化学沉积制备金属Fe纳米线阵列,单根纳米线直径为20nm,Rietveld拟合表明纳米线择优取向为Fe(110)晶面,择优取向因子为0.30.磁滞回线结果表明,垂直于膜面的方向为易磁化方向,当磁场垂直于膜面时,矩形比高达0.914,矫顽力为1656Oe。
A two-step electrochemical anodizing approach was introduced to prepare porous anodic aluminum oxide （AAO） membrane in sulfuric acid solution. The SEM image shows that the pore diameter is 20 nm, interpore spacing 50 nm and pore density 4.5×10^10 pores/cm^2. Ordered Fe nanowire arrays embedded in AAO template have been fabricated by pulse voltage electrodeposition of Fe into the pores of AAO. The Rietveld results show that the preferred orientation of those nanowires with diameter of 20 nm is crystal plane of Fe （110） and preferred orientation factor is 0.30. The easy magnetization axis of this system is perpendicular to the membrane. When the outer magnetic field is perpendicular to the membrane, the squareness is as high as 0.914, and coercivity 1656 Oe.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2008年第2期384-388,共5页
The Chinese Journal of Process Engineering
基金
国家自然科学基金重点资助项目(编号:20236020)
国家高技术研究发展计划(863)基金资助项目(编号:2006AA03Z358)
上海市重点实验室专项基金资助项目(编号:05DZ22302
06DZ22008)
上海市纳米科技专项基金资助项目(编号:0552nm001
0652nm034)
