Synthesis, characterization and ESR studies of powder Zn 0.95-xMg0.05AlxO (x=0, 0.01, 0.02, 0.05, and 0.1) nanocrystals

Abstract

Zn<inf>0.95-x</inf>Mg<inf>0.05</inf>Al<inf>x</inf>O solutions with different (x=0.0, 0.01, 0.02, 0.05, and 0.1) compositions were synthesized by the sol-gel technique using Zn, Mg and Al based alkoxide. The effects of doping ratio and annealing temperature on the structure and magnetic properties were investigated systematically. The phase and the crystal structure of the Zn <inf>0.95-x</inf>Mg<inf>0.05</inf>Al<inf>x</inf>O nanoparticles were characterized using X-Ray diffraction. The size and microstructure of samples were characterized by Scanning Electron Microscope and X-Ray diffraction. The particle sizes of nanoparticles were observed in the 20-25 nm range. ESR spectra of Zn<inf>0.95-x</inf>Mg<inf>0.05</inf>Al<inf>x</inf>O powder samples were collected at room temperature on a Bruker EMX model X-band spectrometer operating at a frequency of 9.50 GHz. © 2013 Elsevier Ltd. © 2014 Elsevier B.V., All rights reserved.