Enhanced room temperature ferromagnetism and photoluminescence behavior of Cu-doped ZnO co-doped with Mn
M Ashokkumar, S Muthukumaran
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES | ELSEVIER | Published : 2015
Cu, Mn co-doped ZnO nanoparticles were successfully synthesized by the sol-gel technique. XRD pattern described that Mn-doping did not affect the hexagonal wurtzite structure of the samples and no secondary phases were found. The reduced crystallite size at Mn=2% is due to the suppression of grain surface growth by foreign impurity. The enhancement of crystal size after Mn=2% is due to the expansion of lattice volume produced by the distortion around the dopant ion. The better dielectric constant and conductivity noticed at Mn=2% are explained by charge carrier density and crystallite size. The suppression of broad UV band by Mn-doping is discussed based on the generation of non-radiative re..View full abstract
Awarded by University Grants Commission (UGC), New Delhi, India
The authors are thankful to the University Grants Commission (UGC), New Delhi, India, for financial support under the project [file no.: 41-968/2012 (SR)].