Fabrication, characterization and magnetic properties of Na-doped ZnO nanorods

Abstract

Na-doped ZnO nanorods have been fabricated through a hydrothermal method. X-ray diffraction (XRD) and transmission electron microscopy (TEM) analyses indicate that the d spacing of ZnO increases with increasing doping concentration, suggesting the effective incorporation of dopant Na in the samples. Electron paramagnetic resonance (EPR) measurements indicate that there are shallow donors in pure ZnO samples and the shallow donors are strongly prohibited by Na doping. In addition, the resonance at g = 2.005 suggests the formation of Zn vacancies. Magnetic measurements indicate that pure ZnO is paramagnetic and Na doping leads to ferromagnetism at room temperature. Moreover, 0.5% Na-doped ZnO nanorods exhibits the largest saturation magnetization.

First Principles Research on the Magnetic Properties of Na and Cl doped ZnO

“…it was reported that the Na-doped p-type ZnO experiment was successfully performed by Piao et al [6] [7]. The results show that the magnetic properties of ZnO increased the saturation magnetic properties by 0.008 emu/cc.…”