Viscosity of (GeS2) (Sb2S3)1− supercooled melts

Kinetics of crystal growth of Sb2S3 in (GeS2)0.3(Sb2S3)0.7 glass

“…However, it fails to estimate the fraction crystallized in isothermal conditions. The activation energy of crystal growth represents about 60% of the activation energy of viscous flow in (GeS 2 ) 0.3 (Sb 2 S 3 ) 0.7 supercooled melt (E g = 485 ± 8 kJ mol À1 ) [14,15]. A similar result was reported for crystallization of As 2 Se 3 in the supercooled melt of the same composition [41].…”

“…Fig. 9 shows the reduced growth rate plot calculated by using our growth rate data ( Table 1) and viscosity data reported for (GeS 2 ) x (Sb 2 S 3 ) 1Àx melts [14,15]. The positive curvature of this plot suggests 2D surface nucleated growth.…”

“…(3) for parameters obtained from the ln(ug) versus (TDT) À1 plot, and the viscosity data taken from Refs. [14,15]. It is seen that optimum condition for optical observation of Sb 2 S 3 crystal growth in supercooled melt of (GeS 2 ) 0.3 (Sb 2 S 3 ) 0.7 composition is for viscosity range: 4.6 < log(g/Pa s) < 7.7.…”

“…The aim of this work is a microscopic study of the crystal growth kinetics of Sb 2 S 3 in the highly supercooled melt of (GeS 2 ) 0.3 (Sb 2 S 3 ) 0.7 composition. Using the data obtained in this study combined with DSC data [13] and viscosity data [14,15] we discuss the applicability of classical phenomenological theory.…”

The crystallization kinetics of Sb2S3 in (GeS2)0.4(Sb2S3)0.6 glass

“…In Fig. 7 are plotted viscosity data [14], the experimental growth rate data (Table 2) and the growth rate curve calculated by using parameters B = (2.5 ± 0.1). 10 6 K 2 and ln(C/Nm -1 ) = 14.7 ± 0.8 obtained from the ln(u.η) versus (T.ΔT) -1 plot.…”