EPR and structural studies of doped (ZrO2)0.8(Y2O3)0.2

Polycrystalline samples of (ZrO2)0.8(Y2O3)0.2 ceramic oxides doped with vanadium, iron, nickel, and cobalt are synthesized and characterized using X-ray diffraction, scanning electron microscopy, and electron paramagnetic resonance techniques. It is observed from EPR studies that the nickel-doped sample exhibits a rather broad signal comprising a large number of narrow lines. It is noted from the XRD and SEM studies that all the samples consist of mainly two phases, monoclinic and tetragonal.