fig3

Figure 3. TEM characterization of GAGG: 2 at% Eu³⁺ ceramic: (A) SAED pattern, (B) HAADF-STEM image, and (C) EDS elemental mapping. GAGG: Gd₃Al₃Ga₂O₁₂; TEM: transmission electron microscopy; HAADF-STEM: high-angle annular dark-field scanning transmission electron microscopy; SAED: selected area electron diffraction; EDS: energy dispersive spectroscopy.