• DETERMINATION OF DEBYE TEMPERATURE AND SYNTHESIS OF ZINC OXIDE POWDER

Abstract

In this communication, we have been reported the synthesis and determination of thermal properties like Debye-Waller factor, Debye temperature and mean square amplitude of vibrations of zinc oxide (ZnO) powder by using chemical route and X-ray diffraction (XRD) technique respectively. After synthesis of the ZnO powder, the patterns of X-ray diffraction have been recorded. The Debye-Waller factor, Debye temperature and mean square amplitude of vibrations have been determined from integrated X-ray intensities. The intensities have been measured with a JEOL JDX-8P upgraded X-ray powder diffractometer fitted with a NaI(TI) scintillation counter using filtered CuKα radiation at room temperature and have been corrected for thermal diffuse scattering(TDS). The particle size has been estimated from Hall-Williamson plot and it has been found as 238 nm. The Debye temperature θ_M has determined as 350 K. The value of Debye temperature obtained in the present work has been compared with the value obtained from other methods. It is good agreed.  The X-ray Debye temperature obtained in the present work has also been used to estimate vacancy formation energy (E_f) of ZnO powder.