Eu-doped BaO-Al2O3-SiO2−MgF2 glass and glass ceramics

Effect of carbon on the co-presence of metallic tungsten as a nucleation agent and Eu2+ in glass: crystallization of CaO–Al2O3–SiO2 glass probed with Eu2+ luminescence

“…Notably, the 610 nm emission was never observed in the uorescence spectra recorded under 393 nm excitation, whereas in our previous study, broad emissions at both 470 and 610 nm were observed in the spectrum of yellowish CAS glass containing Eu 2+ but not metallic Mo. 10 In previous reports on Eu 2+ -doped GCs [12][13][14][15][16][33][34][35] and phosphors whose mother materials were RAl 2 Si 2 O 8 (where R represents an alkaline earth element), [36][37][38][39][40] the 420 nm emission was clearly observed because of the incorporation of Eu 2+ into the crystal structure. In the present study, reections due to anorthite are observed in the XRD pattern of Eu 2+ -CaAl 2 Si 2 O 8 and broad emission at 420 nm is observed in the uorescence spectrum of Eu 2+ -CaAl 2 Si 2 O 8 (Fig.…”

“…In previous reports on Eu 2+ -doped GCs 12–16,33–35 and phosphors whose mother materials were RAl 2 Si 2 O 8 (where R represents an alkaline earth element), 36–40 the 420 nm emission was clearly observed because of the incorporation of Eu 2+ into the crystal structure. In the present study, reflections due to anorthite are observed in the XRD pattern of Eu 2+ –CaAl 2 Si 2 O 8 and broad emission at 420 nm is observed in the fluorescence spectrum of Eu 2+ –CaAl 2 Si 2 O 8 (Fig.…”

“…Although the 420 nm intensity increased after crystallization of BaO–Al 2 O 3 –SiO 2 –MgF 2 glass, in which the main crystalline phase of was BaAl 2 Si 2 O 8 , the relationship between the increase intensity and crystallization is not linear according to previous reported results. 12 In addition, by-phases are precipitated along with the main phase. 12 These tendencies have been documented in the previous studies.…”

“…14,15 Therefore, the present study clearly shows the linear relationships between the fluorescence intensity and crystallization amount because of the features of CAS GC-H, which has a single crystalline phase and relatively high transparency compared with GCs prepared via fluorine separation. 11,12,26…”

“…12 In addition, by-phases are precipitated along with the main phase. 12 These tendencies have been documented in the previous studies. 14,15 Therefore, the present study clearly shows the linear relationships between the uorescence intensity and crystallization amount because of the features of CAS GC-H, which has a single crystalline phase and relatively high transparency compared with GCs prepared via uorine separation.…”