Figure 1. GIXRD characterization of irradiated spinels.

(a) MgAl₂O₄, (b) MgGa₂O₄ and (c) MgIn₂O₄ in the pristine as-synthesized state (black curves), after irradiation to a fluence of 10²⁰ Ne ions per m² (red curves) and after irradiation to a fluence of 10²⁰ Kr ions per m² (blue curves). MgAl₂O₄ remains unchanged after these irradiation fluences. MgGa₂O₄ shows indications of amorphization and the reduction in diffraction peaks associated with the spinel structure. These trends are even more apparent in the MgIn₂O₄ spinel in which there is significant amorphization and the spinel diffraction peaks are almost completely absent after irradiation. The spinel and rocksalt peaks are labelled S and R, respectively, for MgIn₂O₄ for reference.