Abstract
Nanoparticles of ZnO:V prepared using sol–gel method are investigated for the magnetic properties. The particles of them possess polycrystalline and hexagonal wurtzite structure. The average size of particles is found to be around 60 nm. In the optical absorption study of the samples, a red shift of optical band edge and a narrowing of the optical band gap are observed when vanadium concentration is increased. The observed non-zero magnetization and coercive field determined from magnetic hysteresis loops indicate the exchange and anisotropy effects developed in nanoparticles of ZnO:V. EPR measurements provide substantial evidence for the presence of defect sites.
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