Non network-former cations in oxide glasses spotted by Raman scattering

Abstract

The depolarized Raman spectra can be used as a probe to reveal the presence of non-network formers in oxide glasses.

The boson peak in silicate glasses: insight from molecular dynamics

“…For silicate-based glasses, many attempts of correlation with physical parameters are proposed in the literature for the origins of the BP. Starting from systematic studies of the effect of ionic radius, 21 field strength, 22 and mass 23 of the cations on the BP, studies were extended to cover also the effect of the degree of polymerization as demonstrated by Richet. 24 Besides the atomic properties and the role of oxides, other physical properties such as the effect of fictive temperature of the glass, 25 the fragility index of the predecessor liquid 26 and elastic properties 27 were also reported.…”