Abstract
Cr-doped ZnO thin films are deposited by sol–gel dip coating. The effect of Cr on the structural, magnetic and optical parameters of zinc oxide films is studied. X-ray diffraction patterns of Cr-doped ZnO thin films are found to have a hexagonal wurtzite structure of ZnO. The bandgap energy of the Cr-doped ZnO thin films is calculated by the Tauq method. Crystallite size is evaluated by the Scherrer and Williamson–Hall relation. Both show that crystallite size enhances with an enhancement in Cr doping. The bandgap energy of the Cr-doped ZnO thin films is decreased by increasing the Cr dopant. The films are found to be ferromagnetic with a decrease in magnetic properties with an increase in Cr content.
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