Thermal and electric transport properties of (60−x)V2O5–xAs2O3–20Fe2O3–10CaO–10Li2O unconventional glassy system

Thermal Kinetics and Theoretical Third Order Nonlinear Optical Susceptibility of some As2 O3 .V2 O5 .FeO Glasses

“…It can be concluded from Figure that T g , T c , and T P increase from 615 to 666 K with increasing the amount of the As 2 O 3 in the glasses. Some close characteristic temperatures are reported for (60− x )V 2 O 5 · x As 2 O 3 ·20Fe 2 O 3 ·10CaO·10Li 2 O glasses and for x V 2 O 5 ·(1− x )As 2 O 3 glasses, whereas large values are obtained for 35P 2 O 5 ·(45− x )V 2 O 5 · x As 2 O 3 ·20Fe 2 O 3 glasses…”

“…E g values were found to be 174–298 ± 3% kJ mol −1 for 35P 2 O 5 . (45‐x)V 2 O 5 .xAs 2 O 3 .20Fe 2 O 3 glasses and 177–238 ± 3% kJ mol −1 for (60‐x)V 2 O 5 .xAs 2 O 3 .20Fe 2 O 3 .10CaO.10Li 2 O glasses …”

“…The n Av value is found to be 2.3, this value agrees with the values obtained before. It is worth mentioning that, the E c was calculated for (60‐x)V 2 O 5 .xAs 2 O 3 .20Fe 2 O 3 .10CaO.10Li 2 O glasses and found to be in the range of 199–29 3 ±1% kJ mol −1 . Also, E c , n Av , and m were calculated for 35P 2 O 5 .…”

“…The values of T g , T c , and T P are shown in Figure 9 as a function of %As 2 O 3 in the glasses. It can be concluded from Figure 9 that T g , T c , and T P increase from 615 to 666 K with increasing the amount of the [58] and for xV 2 O 5 Á(1Àx)As 2 O 3 glasses, [59] whereas large values are obtained for 35P 2 O 5 Á(45Àx)V 2 O 5 ÁxAs 2 O 3 Á20Fe 2 O 3 glasses. [9] The calculated thermal stability is found to increase from 11 to 45 K with the increase of the %As 2 O 3 in the glasses.…”

“…(45x)V 2 O 5 .xAs 2 O 3 .20Fe 2 O 3 glasses [9] and 177-238 AE 3% kJ mol À1 for (60-x)V 2 O 5 .xAs 2 O 3 .20Fe 2 O 3 .10CaO.10Li 2 O glasses. [58] Lasocka [67] approach is an empirical relationship that describes the dependence of the T g parameter on the variation of β, and has the form:…”