TITLE:
Chromium-Doped ZnO Nanoparticles Synthesized by Co-Precipitation: Chromium Effects
AUTHORS:
Santi Septiani Sartiman, Nadia Febiana Djaja, Rosari Saleh
KEYWORDS:
Nanocrystalline ZnO Particles; Chromium; Room-Temperature-Ferromagnetic; ESR; Co-Precipitation
JOURNAL NAME:
Materials Sciences and Applications,
Vol.4 No.9,
September
6,
2013
ABSTRACT: The influence of chromium doping on the physical properties of ZnO nanoparticles synthesized using a low temperature co-precipitation technique is presented. In particular, we have studied the correlation between the structural and the magnetic properties as a function of chromium concentrations. In order to investigate the magnetic properties, vibrating sample magnetometry and electron spin resonance were employed. X-ray diffraction, energy-dispersive X-ray spectroscopy, Fourier transform infrared spectroscopy and UV-Vis spectroscopy were used. X-ray diffraction patterns of all the samples showed peaks consistent with a hexagonal wurzite structure. The structure and composition analyses revealed that chromium is incorporated into the lattice structure, forming a solid solution instead of precipitates. All of the samples in this study exhibit ferromagnetic behavior. The implications of the effects of chromium are also discussed.