Fe-Co-Ni合金纳米线有序阵列的模板合成与磁性  

Templated Synthesis and Magnetic Properties of Fe-Co-Ni Ternary Alloy Nanowires

作　　者：姜国伟[1] 姚连增[1] 晋传贵[1] 何婷[1] 林青[1] 蔡维理[1] 李晓光[1] 姚震 

机构地区：[1]中国科学技术大学材料科学与工程系 [2]Department of Physics,University of Texasat Austin,Austin Texas 78712,USA

出　　处：《物理化学学报》2003年第7期597-600,共4页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(50128202)资助项目~~

摘　　要：以二次阳极氧化的氧化铝膜为模板,用电化学沉积的方法成功地合成了Fe-Co-Ni三组份有序纳米线阵列.扫描电子显微镜(SEM)和透射电子显微镜(TEM)观察表明纳米线表面光滑、有序、高长径比;磁性测量表明,其矫顽力较同组份的膜材料有较大的提高.将样品在惰性气体氛围中不同温度下退火,随着退火温度增加,其纵向矫顽力有一个极值,而对应的横向矫顽力没有类似的变化,关于这一现象的机理,本文进行了初步的讨论.Highly ordered ternary alloy nanowire arrays have been fabricated within nanochannels of anodic alumina membrane by electrochemical deposition. Scanning electron microscopy and transmission electron microscopy observations show that the nanowires are smooth,uniform and straight. The XRD gives the microstructure information on samples annealed at different temperatures under Ar atmosphere. Magnetic measurement shows that the nanowire arrays have higher coercivity than that of the thin magnetic film with similar composition. Meanwhile, the relation between the coercivity and annealing temperature has been studied.

关 键 词：Fe-Co-Ni合金 纳米线有序阵列 氧化铝模板 合成 磁性 矫顽力 

分 类 号：TQ153[化学工程—电化学工业]