模板法合成分叉Ni纳米线阵列及其磁性能  

Templating fabrication and magnetic properties of branched Ni nanowire arrays

作　　者：郭庆[1] 秦丽溶[1] 赵建伟[1] 郝永皓[1] 李国庆[1] 陈鹏[1] 

机构地区：[1]西南大学物理科学与技术学院,重庆400715

出　　处：《功能材料》2011年第B02期36-38,共3页Journal of Functional Materials

基　　金：重庆市自然科学基金资助项目(2009BB4304);西南大学基本科研业务费专项资金资助项目(XDJK2009C089;XDJK2009C090)

摘　　要：首先采用三次阳极氧化法制备了具有Y形孔道的氧化铝(AAO)模板,然后采用直流电化学沉积法,在模板内成功合成了分叉Ni纳米线的有序阵列。通过X射线衍射仪(XRD)、扫描电子显微镜(SEM)和透射电子显微镜(TEM)对所合成样品的晶体结构和形貌进行了表征测试。结果表明,制备的Ni纳米线分布均匀、排列有序,呈Y形分叉结构,其主干和分支的直径分别约为75和50nm。磁性测试结果显示分叉Ni纳米线阵列具有明显的磁各向异性,在垂直磁记录介质和纳米电子器件组装方面具有潜在应用前景。Anodie aluminum oxide （AAO） template with Y-branched nanoholes was first prepared by a three-step anodic oxidation. Then, well aligned branched Ni nanowire arrays were fabricated in the as-synthesized template by direct-current （DC） electrochemical deposition method. The structure and morphology of the prod- uct was characterized by X-ray diffraction （XRD）, scanning electron microscopy （SEM）, and transmission elec- tron microscopy （TEM）. Investigation results demonstrate that the synthesized Ni nanowires were parallel in symmetrical distribution and showed Y-branched structures. The ＂stem＂ and the ＂branches＂ of the branched Ni nanowires were about 75 and 50 nm in diameter, respectively. Magnetization measurements on the array of the Ni nanowires revealed an obvious magnetic anisotropy. So the branched Ni nanowire arrays synthesized here had promising technological applications in perpendicular information storage and nanoelectronic devices.

关 键 词：氧化铝模板 纳米线 分叉结构 磁性 

分 类 号：O48[理学—固体物理] TG14[理学—物理]