物理学报2009，Vol.58Issue(11)：7988-7992,5.
磁场对模板法制备的Co纳米线结构和磁性的影响
Effects of applied magnetic field on microstructure and magnetic properties of template-based Co nanowire arrays
摘要
Abstract
Arrays of Co nanowires were fabricated by ac electrochemical deposition of metal into high order anodic alumina templates prepared through two-step oxidation method. The effects of applied magnetic field and the pH value of the electrolyte on growth of nanowires were investigated. Arrays of Co nanowires of hcp structure were deposited in the electrolyte whose pH values are 6.0 and 6.5 without magnetic field, then 0.3 T magnetic field was applied along the long axis of nanowires. The experimental results show that external magnetic field and adjustment of pH value of the electrolyte impel the easy magnetization axis of the hcp Co grain to grow along length direction of nanowires. The Co nanowire arrays show higher perpendicular anisotropy, larger coercivity and high M/M, because the superposition of the crystal anisotropy of hcp Co grains and shape anisotropy of nanowire along length direction.关键词
Co纳米线阵列/织构/磁性Key words
arrays of Co nanowries/texture/magnetic properties分类
化学化工引用本文复制引用
刘文邦,孟卫民,娄元付,刘曦,张璐然,郑新奇,魏福林..磁场对模板法制备的Co纳米线结构和磁性的影响[J].物理学报,2009,58(11):7988-7992,5.基金项目
国家自然科学基金(批准号:10874060)资助的课题.Project supported by the National Natural Science Foundation of China (Grant No. 10874060). （批准号:10874060）
