The films are grown by pulsed laser deposition technique by using a KrF excimer laser at a wavelength of 248 nm. The pulse repetition rate of the laser is 5 Hz and the energy of per pulse is 100 mJ. A ZnGa2O4:Cr3+ ceramic target is installed parallel to the substrate surface and the distance between the target and the substrate is kept at 5 cm. The target and the substrate are rotated at 30 rpm continuously during the deposition process.