In system Y 2 O 3 - Al 2 O 3 - B 2 O 3 glasses and products of solid-phase synthesis in the form of single-phase powders with a huntite structure, activated with samarium, were obtained. It is shown that the studied glasses crystallize with the release of predominantly aluminum borate Al 4 B 2 O 9 and a solid solution (Y, Sm) Al < sub> 3 (BO 3 ) 4 on the sample surface. Upon transition of crystalline powders (Sm x Y 1-x ) Al 3 (BO 3 ) 4 to the amorphous state, the leveling of the Stark structure and broadening of the Sm 3+ luminescence bands are observed, however, the luminescence branching coefficients change insignificantly. It was found that a decrease in the synthesis temperature of such glasses from 1450 to 1250 ° C leads to an increase in the fraction of VO 4 and the quantum yield of luminescence at a low concentration of the activator.
E. Kh. Mamadzhanova
1 , Cand. chem. N.V. Golubev
1 , Dr. Sci. V. N. Sigaev
1 (
This email address is being protected from spambots. You need JavaScript enabled to view it. ), Dr. Sciences G. E. Malashkevich
1,2 , A. N. Shimko
2 , Cand. mat. Sciences I. V. Prusova
2 , Cand. physical-mat. sciences I. I. Sergeev
2 ;
1 D. I. Mendeleeva (Russia, Moscow),
2 Stepanov Institute of Physics of the National Academy of Sciences of Belarus (Belarus, Minsk)
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