The structural modification of the host matrix induced by external treatments in ion-exchanged silicate glasses have not been studied rigorously, despite its importance in tailoring the performances of optical devices. Silicate glass layers prepared by Ag+-Na+ ion-exchange were annealed and irradiated with laser beam. The rearrangement of silica network and Ag clustering process during external treatments in silver-containing glasses were studied by Raman spectroscopy. Modifications of silica network microstructure in ion-exchanged and treated glasses were investigated by analyzing Raman band in between 700 and 1250 cm−1. External treatments result in the sequence of structural changes, which may be interpreted as the change in polymerizing units, appearance and disappearance of non-bridging oxygen centers in glass. The transformation of silver during external treatments was evidenced from the low-frequency Raman spectra. A final assignment of silica-network microstructure modifications due to cluster fragmentation with high energy laser irradiation is attained by using Raman spectral analyses.
|Data di pubblicazione:||2021|
|Titolo:||Thermal annealing and laser induced structural rearrangement and silver state modification in Ag+-Na+ ion-exchanged silicate glasses studied by Raman spectroscopy|
|Rivista:||JOURNAL OF NON-CRYSTALLINE SOLIDS|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.jnoncrysol.2020.120455|
|Appare nelle tipologie:||2.1 Articolo su rivista |
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