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Inne
Investigation of sol-gel glasses doped with lanthanide ions by spectroscopic, acoustic, and positron annihilation methods.
Autorzy
Rok wydania
2006
Czasopismo
Numer woluminu
110
Strony
583-591
DOI
10.12693/APhysPolA.110.583
Kolekcja
Język
Angielski
Typ publikacji
Artykuł
The results of optical spectroscopic (UV-Vis, absorption, and emission),acoustic (sound velocity of precursor solutions, the solvation numbers of ionsin these solutions), and positron annihilation of glasses are presented anddiscussed for silica glasses obtained by the alcoholic sol-gel technique, dopedwith selected lanthanides and with some addition of ethylene glycol. Theaim of these investigations was the determination of the local structure ofglass close to lanthanide ions and its influence on the optical properties of thematerial. The results show that the existence of alcohol–glycol solvates inglasses decrease the number of empty voids in its structure as well as the sizeof the remaining ones. One can suppose that this is caused by cooperativeinteractions of glycol molecules with the network of hydrogen bonds of the glass.
Adres publiczny
https://doi.org/10.12693/APhysPolA.110.583