多元氧化物纳米丝阵列的电泳沉积

以多孔氧化铝(porous alumina)为模板,用电泳沉积技术组装了高度有序的钛酸钡(BaTiO3)、钛酸锶(SrTiO3)、锆钛酸铅(lead zirconate titanate,PZT)等多元氧化物纳米丝阵列.用扫描电镜(scanning electron microscope,SEM)、透射电镜(transmission electron microscope,TEM)、选区电子衍射(selected area electron diffraction,SAED)、X射线衍射(x-ray diffraction,XRD)等手段表征多元氧化物纳米丝阵列.SEM照片显示:所得纳米丝连续、致密,纳米丝直径略小于模板孔径且模板填充率很高.XRD和SAED显示:纳米丝为多晶钙钛矿型结构.因此,电泳沉积法是一种很有发展前途的制备氧化物纳米丝阵列的方法.

ELECTROPHORETIC DEPOSITION OF COMPLEX OXIDE NANOWIRE ARRAYS

Ordered barium titanate(BaTiO3),strontium titanate(SrTiO3)and lead zirconate titanate(PZT)nanowire arrays were suc-cessfully fabricated into nanochannels of a porous alumina template by the electrophoretic deposition.Scanning electron microscope(SEM),transmission electron microscope(TEM),selected area electron diffraction(SAED),and X-ray diffraction(XRD)were used to characterize the structure of the nanowire arrays.The SEM results show that dense,continuous nanowires were obtained.The diameter of the nanowires is less than the diameter of alumina membrane,and the filling rate of the nanochannels of anodic alumina membrane is high.The XRD and SAED investigations demonstrate that the nanowires crystallize in a polycrystalline perovskite structure.The elec-trophoretic deposition method is widely applicable,and can be used for the template growth of various oxide nanowire arrays.