物理化学学报 >> 2006, Vol. 22 >> Issue (08): 977-980.doi: 10.1016/S1872-1508(06)60043-0

研究论文 上一篇    下一篇

双槽法电沉积Cu/Ni多层纳米线有序阵列

张卫国;李伟祥;张璐;姚素薇   

  1. 天津大学化工学院 杉山表面技术研究室, 天津300072
  • 收稿日期:2006-02-06 修回日期:2006-03-31 发布日期:2006-08-04
  • 通讯作者: 张卫国 E-mail:weiguozhang@eyou.com

Electrodeposition of Cu/Ni Multilayered Nanowires Ordered Arrays by Dual Bath Technique

ZHANG Wei-guo;LI Wei-Xiang;ZHANG Lu;YAO Su-Wei   

  1. SUGIYAMA Laboratory of Surface Technology, School of Chemical Engineering and Technology,Tianjin University, Tianjin 300072, P. R. China
  • Received:2006-02-06 Revised:2006-03-31 Published:2006-08-04
  • Contact: ZHANG Wei-guo E-mail:weiguozhang@eyou.com

摘要: 以多孔阳极氧化铝(AAO)为模板,采用双槽法电沉积工艺制得高度有序的Cu/Ni多层纳米线阵列。利用扫描电镜(SEM)和透射电镜(TEM)对Cu/Ni多层纳米线进行了表征,观察到纳米线表面平滑,多层结构清晰,各子层厚度均匀,直径约为 100 nm,与AAO模板孔径基本一致。由选区电子衍射(SAED)照片可知,多层纳米线中Cu层和Ni层均为单晶结构。振动样品磁强计(VSM)测试结果表明,Cu/Ni多层纳米线阵列具有明显的垂直磁各向异性,外加磁场垂直和平行于AAO模板表面时,磁滞回线的矩形比分别为 0.701 和 0.101 ,矫顽力分别为 589 Oe和 202 Oe。通过控制铝阳极氧化工艺及电沉积时间,可获得不同直径、不同子层厚度的Cu/Ni多层纳米线阵列。

关键词: 双槽法, 电沉积, Cu/Ni, 多层纳米线, 有序阵列

Abstract: An ordered Cu/Ni multilayered nanowires array was electrodeposited into the pores of an anodic aluminum oxide ( AAO ) template, with layer thickness in the range of 3 to 100 nm. In order to avoid codeposition of Cu in the Ni layers, two separate Ni and Cu baths have been used. Scanning electronic microscopy ( SEM ), transmission electron microscopy ( TEM ) were used to characterize the morphology of Cu/Ni multilayered nanowires array. The results show that the layer thicknesses are very uniform and the multilayered structure is clear and regular. The diameter of nanowire is about 100nm, which corresponds to the pore size of the AAO template used. Selected-area electron diffraction ( SAED ) result demonstrates that those multiplayer wires exhibit single crystal structures. Hysteresis curves for multilayered Cu/Ni nanowires array with the AAO membrane support were tested by using vibrating sample magnetometer ( VSM ) at room temperature ( 293 K ). It is found that Cu/Ni nanowires alloys have a strong perpendicular magnetic field anisotropy. When the magnetic field is perpendicular or parallel to the AAO template used, the squareness are 0.701 or 0.101 and the coercivity is 589 Oe or 202 Oe respectively. The diameter and the layer thickness of Cu/Ni multilayered wires could be changed according to demands by adjusting the technologic parameters of anodization and electrodeposition.

Key words: Dual bath, Electrodeposition, Cu/Ni, Multilayered nanowires, Ordered array