Fig. 2
From: Photoluminescence study of optical transitions in spinel zinc gallium oxide thin films
XRD in-plane RSM of (a) beta structure (020) plane for sample 1, (b) mixture of beta structure (020) plane and spinel structure (440) plane for sample 2, (c) weak spinel structure (440) plane for sample 3, and (d)-(f) strong spinel structure (440) plane for sample 4–9.
