Preparation and magnetic properties of ZnFe 2 O 4 nanotubes

Abstract

Ordered ZnFe2O4 nanotube arrays with the average outer diameter of 100nm were prepared in porous anodic aluminum oxide template using an improved sol-gel approach. The morphology was studied by transmission electron and field emission scanning electron microscope. X-ray diffraction result shows that the nanotubes were polycrystalline in structure. The magnetic properties of the prepared ZnFe2O4 nanotubes were also studied. The results show that the sample shows typical superparamagnetism at room temperature and obvious ferromagnetism below blocking temperature. Copyright © 2011 Yan Xu et al.