Influence of alumina addition on crystallization and texturing behavior of LaBGeO5 glass

Borogermanate glasses with a high terbium oxide content

“…Tendency to crystallization of TBG glasses is suppressed at Al 2 O 3 addition (Fig. 1a) that is in good agreement with previous data obtained for LBG glasses [20]. Addition of SiO 2 in combination with Al 2 O 3 decreases even more crystallization ability of investigated glasses.…”

Polyamorphism: Path to new high density glasses at ambient conditions

“…Detailed results will be published elsewhere [25], but in this paper we will focus on the Raman spectra of the main band at 800 cm À1 which is attributed to the stretching of both B-O and Ge-O bands in BO 4 and GeO 4 tetrahedra [26]. From IR spectra Sigaev et al [27] deduced that LBG glass contains both BO 4 and BO 3 units whereas Germanium is only four-fold coordinated. The shift of the 800 cm À1 Raman band as function of the applied pressure in a Diamond Anvil Cell is shown in (Fig.…”

Nanosized structural transformation and nonlinear optical properties of lithium niobium germanate glasses

“…Since LNG1 and LNG2 glasses were obtained and heattreated under the same conditions, the differences in the SHG values, glass crystallization and texturing behavior are assigned to the addition of alumina to LNG2 glass. This Al 2 O 3 content in LNG2 glass does not change a lot the glass transition temperature and the both glasses show almost the same T g values (Table 1), but the alumina presence affects strongly the texturing behavior, crystallization [21] and, hence, the size of heterogeneities formed.…”