Fig. 1

XRD patterns of three selected (a) glass samples (BG0, BG2 and BG4) and (b) their corresponding glass ceramics (BGC0, BGC2 and BGC4 where, ⊗ Ba3B2O6, ○ Ba5B4O11, ▼AlBaBO3F2, ▽Al2O3, ■ BaTi2O5, □ BaTiO3.

XRD patterns of three selected (a) glass samples (BG0, BG2 and BG4) and (b) their corresponding glass ceramics (BGC0, BGC2 and BGC4 where, ⊗ Ba3B2O6, ○ Ba5B4O11, ▼AlBaBO3F2, ▽Al2O3, ■ BaTi2O5, □ BaTiO3.