On the crystallization kinetics of In additive Se–Te chalcogenide glasses

Patial, Balbir Singh; Thakur, Nagesh; Tripathi, S. K.

doi:10.1016/j.tca.2010.09.009

Cited by 43 publications

(5 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The analysis of the activation energy dependence on α provides important clues about the reaction mechanism. The activation energy for such processes is not the same and varies according to the degree of conversion [18].…”

Section: Introductionmentioning

confidence: 99%

Crystallization kinetics of overlapping phases in Se70Te15Sb15 using isoconversional methods

Abdel-Rahim

Hafiz

Mahmoud

2015

Progress in Natural Science: Materials International

View full text Add to dashboard Cite

The crystallization kinetics of Se 70 Te 15 Sb 15 chalcogenide glass was studied by Differential Scanning Calorimetry (DSC) under non-isothermal conditions. This glass was found to have a double glass transition and double overlapped crystalline phases. The overlapped crystalline phases were successfully separated using the Gaussian fit model. The activation energy, E c , and Avrami index, n, were determined by analyzing the data using the Matausita et. al. method. A strong heating rate depending on the activation energy for the two crystalline peaks was observed. The results indicated that the transformation from amorphous to crystalline phases is a complex process involving different mechanisms of nucleation and growth. The variation of activation energy with crystalline fraction was determined by Kissenger-Akahira-Sunose (KAS) method. The obtained results of directly fitting the experimental DSC data to the calculated DSC curves indicated that the crystallization process of Se 70 Te 15 Sb 15 glass cannot be satisfactorily described by the Johnson-Mehl-Avrami (JMA) model. Simulation results indicated that the SestakBerggren (SB) model is more suitable to describe the crystallization process for the studied glass. The crystalline phases for the two events were identified by using x-ray diffraction (XRD) and scanning electron microscopy (SEM). Published by Elsevier GmbH. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

show abstract

Section: Introductionmentioning

confidence: 99%

Crystallization kinetics of overlapping phases in Se70Te15Sb15 using isoconversional methods

Abdel-Rahim

Hafiz

Mahmoud

2015

Progress in Natural Science: Materials International

View full text Add to dashboard Cite

show abstract

“…Our preceding research on ternary Se-Te-In composition signifies that In = 6 at. wt.% has greater thermal stability among investigated alloys [18,19]. Furthermore, in our earlier measurements on AC conductivity and dielectric study in Se-Te-Pb system illustrate considerable influence of Pb addition on conduction mechanism [17].…”

Section: Introductionmentioning

confidence: 55%

On the structural and thermophysical study of Pb-doped Se-Te-In nanochalcogenide alloys

Anjali

Patial

Thakur

2020

Journal of Asian Ceramic Societies

Self Cite

View full text Add to dashboard Cite

Pb additive nanochalcogenide materials are becoming well-known materials in modern optoelectronics. In this paper, multicomponent Se-Te-In-Pb nanochalcogenide alloys are prepared using melt-quenching technique. The physical and submicron structural features of investigated system are reported and discussed. Characteristic peaks in x-ray spectra signify nanorange of each sample under investigation validated by FESEM and HRTEM. Influence of Pb content on examined composition has been deliberated with respect to their physical characterization namely average coordination number (), mean bond energy (), crosslinking density (X), lone-pair electrons (L), fraction of floppy modes (f), constraints (N c ), electronegativity (χ), cohesive energy (CE), glass transition temperature (T g ), and heat of atomization (H s ). It is realized that addition of Pb content, enhanced N c , X, and . Whereas, , L, f, χ, CE, T g , and H s decrease with Pb addition. Cohesive energy is analyzed through chemical-bond approach. T g is estimated by Tichy-Ticha and Lankhorst approaches and are found in consistent with experimental results. The band gap of investigated system has been calculated theoretically by Shimakawa's relation and deduced results are analyzed through cohesive energy, electronegativity, and average single-bond energy. Also the compositional dependence of experimentally derived optical band gap has been analyzed and discussed.

show abstract

“…The amorphous-crystalline transformations in chalcogenide glasses have been investigated extensively in literature using differential scanning calorimeter (DSC) [4][5][6][7][8][9][10][11][12]. Monitoring of thermal changes in chalcogenide glasses using DSC can be performed either at a constant temperature (isothermally) or by changing the temperature at a constant rate (non-isothermally) as reported in the present work.…”

Section: Introductionmentioning

confidence: 99%

Thermal characterization of Se100−xSnx (x=4, 6 and 8) chalcogenide glasses using differential scanning calorimeter

et al. 2013

View full text Add to dashboard Cite

On the crystallization kinetics of In additive Se–Te chalcogenide glasses

Cited by 43 publications

References 64 publications

Crystallization kinetics of overlapping phases in Se70Te15Sb15 using isoconversional methods

Crystallization kinetics of overlapping phases in Se70Te15Sb15 using isoconversional methods

On the structural and thermophysical study of Pb-doped Se-Te-In nanochalcogenide alloys

Thermal characterization of Se100−xSnx (x=4, 6 and 8) chalcogenide glasses using differential scanning calorimeter

Contact Info

Product

Resources

About