Study on the structure, fining and properties of non-alkali aluminoborosilicate glasses containing SnO2

XANES analysis of phosphate glasses melted with Tb4O7 and SnO: evaluating the impact of valence states on structural, thermal, and luminescent properties

“…This is likely due to the high field strength of Sn 4+ ions acting as network modifiers. 39 Lastly, the 5SnTb glass shows in Fig. 7(a) single crystallization peak with T x and T c at 698 and 738 °C, respectively, whereas the T g is estimated at 515 °C.…”

“…This complex behavior was indicated by the authors to be related to the mixed valence states of tin ions in the glasses. 39 In binary SnO–P 2 O 5 glasses, it has been reported for instance by Cha et al 40 and Lim et al 41 that an increase in SnO content tends to slightly increase the T g . However, the effects become more complicated in ternary phosphate glasses such as the SnO–ZnO–P 2 O 5 system studied by Segawa et al 42 wherein the increase in tin content produced a decrease in T g values.…”

“…Therefore, the total tin content does not seem to be the main cause affecting the thermal behavior. He et al 39 studied non-alkali aluminoborosilicate glasses containing SnO 2 and reported on their thermal behavior wherein the values of T g , T x , T c , and Δ T first decreased and then increased with tin contents. This complex behavior was indicated by the authors to be related to the mixed valence states of tin ions in the glasses.…”

“…Also presented in Table 2 is the additional parameter DT = T x À T g indicating glass stability. 38,39 The Tb glass taken as reference exhibits a single crystallization peak around 706 1C with T x at 654 1C, and within the glass transition region a T g value of 505 1C was estimated. The implied stability factor is thus DT = 149 1C, which is somewhat lower than that reported for a similar 0.5 mol% Tm 2 O 3 -doped barium phosphate glass with DT of 169 1C, given the T g , T x and T c of 499, 668 and 699 1C, respectively.…”

Physical, Thermal, Linear, Non-linear Optical Properties of Bismuth Modified Borate Glasses Containing Zno, Cdo and Mgo

“…Figure 4 shows the rise in molar volume of the produced samples from 27.60 to 35.19 cc/mole. The degree to which the glass network structure is compact mostly determines the change in molar volume values (Vm) [31].…”