Crystallization and luminescence properties of (SmxY1 – x)2O3–Al2O3–B2O3 glass

• Published in: Glass and ceramics Vol. 69; no. 11-12; pp. 370 - 374
• Main Authors: Mamadzhanova, E. Kh, Golubev, N. V., Sigaev, V. N., Malashkevich, G. E., Shimko, A. N., Prusova, I. V., Sergeev, I. I.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-03-2013
• Subjects: Ceramics; Characterization and Evaluation of Materials; Chemistry and Materials Science; Composites; Glass; Materials Science; Natural Materials; ); crystallization of glasses; aluminum-borate glasses; YAl; BO; luminescence properties of samarium
• ISSN: 0361-7610; 1573-8515
• DOI: 10.1007/s10717-013-9481-1

Glass and products of solid-phase synthesis in the form of samarium-activated single-phase powders with huntite structure were obtained in the system Y
2
O
3
–Al
2
O
3
–B
2
O
3
. It was shown that the glasses studied crystallize with predominately aluminum borate Al
4
B
2
O
9
precipitating in the bulk and the solid solution (Y, Sm)Al
3
(BO
3
)
4
on the surface of the sample. When the crystalline powders (Sm
x
Y
1 –
x
)Al
3
(BO
3
)
4
transitioned into an amorphous state leveling of the Stark structure and broadening of the luminescence bands of Sm
3+
was observed, but the luminescence branching ratios changed very little. It was found that lowering the synthesis temperature of such glasses from 1450 to 1250°C increases the BO
4
fraction and quantum yield of luminescence with low activator concentration.