Crystallization kinetics and optical band gap studies of Se96In4 glass before and after slow neutron irradiation

Crystallisation kinetics, glass forming ability and thermal stability in glassy Se100−xInx chalcogenide alloys

“…This discontinuity has been reported by others for various glass alloys and has been attributed to structural and chemical stabilities at certain mean coordination numbers [7,34]. The obtained values of E t are higher than those of E c which is consistent with results usually obtained [12,32,35,36] for these binary and ternary Se based chalcogenides. The frequency factor K o was determined from the Arrhenius equation with knowledge of E c and and lnK o from the Augis-Bennett equation (Eq.…”

“…Above the 1% limit, the extra atoms enter into the chain partially breaking down the long chains and hence increasing the proportion of Se 8 rings with consequent decrease in T g [28]. The observed monotonic increase of T g with addition of In above this limit was attributed to the crosslinking and the substitution of Se-Se homopolar bonds with Se-In heteropolar bonds with increased bond energies [36] from 43.81 kj mol − 1 to 48.2 kj mol − 1 respectively. It is established that in the quest to satisfy its co-ordination requirements, dissolution of In into the Se chains forms a cross linked matrix which increases the lattice rigidity, increasing T g , and decreases thermal stability as well as T c [31].…”

“…Higher values of these parameters imply higher thermal stabilities of these glasses. Of these, ΔT cg is a strong indicator of thermal stability in that the higher the value, the more stable the glass [31,36,37]. In a study by Shabaan et al [47] for Ge x In 8 Se 92 − x , it was concluded that glasses with highest stabilities were indicated by highest values of ΔT cg , H r and H w and include those with bZN ≤ 2.4.…”

Optical properties change in Sb40S40Se20 thin films by light-induced effect

“…It is well established that chalcogenide glasses undergo structural changes under the action of external influences such as laser, neutron, electron and gamma irradiation [11][12][13][14][15][16][17]. Chalcogenide materials also have the important property that, although there are some gap states, they do not carry the traditional electron spin resonance (ESR) defect signature of unpaired spins.…”

Effect of lithium ion irradiation on the glass transition kinetics of Se98In2chalcogenide glass

“…The ion-beam assisted techniques have made substantial contributions as a selective tool for understanding, fabricating and characterization of amorphous alloys [4][5][6][7][8]. The effect of irradiation is potentially to cause changes in the structure of the materials and also produce several new properties of materials [8], which may find interesting applications [6].…”