Kinetics of non-isothermal crystallization of ternary Se80Te20−xZnx glasses

Ahmad, A.; Khan, Shamshad A.; Al-Ghamdi, Ahmed A.; Al-Agel, F.A.; Sinha, K.; Zulfequar, M.; Husain, M.

doi:10.1016/j.jallcom.2010.03.015

Cited by 11 publications

(4 citation statements)

References 28 publications

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“…They are attracting an extensive attention due to their practical and potential uses in the civil, medical and military areas, especially in the fields of infrared optics, opto-electronics, photonics, fiber optics and novel memory devices. They also show a continuous change in the physical properties with change of chemical composition [1,2].…”

Section: Introductionmentioning

confidence: 99%

Optical spectroscopy, optical conductivity, dielectric properties and new methods for determining the gap states of CuSe thin films

Sakr

Yahia

Fadel

et al. 2010

Journal of Alloys and Compounds

172

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Section: Introductionmentioning

confidence: 99%

Optical spectroscopy, optical conductivity, dielectric properties and new methods for determining the gap states of CuSe thin films

Sakr

Yahia

Fadel

et al. 2010

Journal of Alloys and Compounds

172

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“…For more than 55 years, chalcogenide glass (ChG) researchers have applied the Johnson-Mehl-Avrami (JMA) model in combination with either the Kissinger or Moynihan model to determine the activation energy for crystallization (Abd El-Raheem & Ali, 2010;Abu-Sehly et al, 2009;Afify, 1991;Ahmad et al, 2010;Al-Ghamdi et al, 2011;Aly, 2017;Dahshan et al, 2010;Kaur et al, 2000;Lee et al, 2004;Vázquez et al, 2004;Yinnon & Uhlmann, 1983). Individually and collectively, these models incorporate equations that have implicit shortcomings and which may lead to incorrect solutions, especially when employing slow heating rates.…”

Section: Conclusion and Discussionmentioning

confidence: 99%

Modified Chalcogenide Glass Equations for the Activation Energy of Crystallization

Loretz,

Loretz

2024

JOPR

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For over six decades, chalcogenide glasses have played a pivotal role in the optical community, fostering innovations and new applications in photonics, electronics and electro-optics. In the last decade, the exploration of novel applications, such as Gradient Index (GRIN) chalcogenide glasses, has underscored the need for a nuanced comprehension and precise control of nucleation and crystallization kinetics in emerging infrared glass compositions. This paper explores the activation energy of crystallization in amorphous materials, particularly focusing on chalcogenide glasses. It identifies long-standing challenges associated with existing models used for crystal growth in nucleated glasses. Employing carefully outlined mathematical logic, our study critiques conventional models and introduces innovative equations centering around the need for balanced units and proper physical trends. These new models overcome some shortcomings of the established framework and provide a more accurate depiction of crystallization kinetics. To validate the efficacy of our proposed models, we conducted a comparative analysis using Differential Scanning Calorimetry (DSC) data from a recently published Sb-Te-Se chalcogenide glass composition. The numerical and graphical results clearly illustrate the improvements inherent in our models and their practical utility. Beyond chalcogenide glasses, our models and equations have broader applications. They may extend to oxide, halide, oxy-halide and fluoride glass compositions, as well as polymers, contributing new tools to the understanding of crystallization kinetics across diverse materials.

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“…The thermal stability and the dynamics of crystallization process can be determined by formulism of crystallization kinetics. The crystallization kinetics depend on various parameters; such as the mode of crystallization, the number of quenched nuclei, the activation energy of diffusion and also the difference in free energy between the amorphous and possible crystalline phases [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Crystallization Kinetics in Glassy Se and Binary Se98M2 (M=Ag, Cd, Zn) Alloys Using DSC Technique in Non-Isothermal Mode

Dohare¹,

Mehta²

2012

JCPT

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The crystallization kinetics of glassy Se and binary Se98M2 (M=Ag, Cd, Zn) alloys have been studied at different heating rates (5, 10, 15, 20 Kmin-1) using Differential Scanning Calorimetric (DSC) technique. The crystallization temperature (Tc) is determined from exothermic peak obtained in DSC scans of present samples. The variation in peak crystallization temperature (Tc) with the heating rate (β) has been used to investigate the growth kinetics using Kissinger, Augis-Bennet and Matusita-Sakka models. The activation energy of crystallization (Ec) has been found to increase with Ag additive and to decrease with Zn and Cd additive. The value of various kinetic parameters such as rate constant (Kp), Avrami index (n), thermal stability (S) and Hruby number (Hr) have been calculated under non-isothermal mode. The maximum change in different kinetic parameters has been found after the incorporation of Ag additive

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Kinetics of non-isothermal crystallization of ternary Se80Te20−xZnx glasses

Cited by 11 publications

References 28 publications

Optical spectroscopy, optical conductivity, dielectric properties and new methods for determining the gap states of CuSe thin films

Optical spectroscopy, optical conductivity, dielectric properties and new methods for determining the gap states of CuSe thin films

Modified Chalcogenide Glass Equations for the Activation Energy of Crystallization

Investigation of Crystallization Kinetics in Glassy Se and Binary Se<sub>98</sub>M<sub>2</sub> (M=Ag, Cd, Zn) Alloys Using DSC Technique in Non-Isothermal Mode

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Kinetics of non-isothermal crystallization of ternary Se80Te20−xZnx glasses

Cited by 11 publications

References 28 publications

Optical spectroscopy, optical conductivity, dielectric properties and new methods for determining the gap states of CuSe thin films

Optical spectroscopy, optical conductivity, dielectric properties and new methods for determining the gap states of CuSe thin films

Modified Chalcogenide Glass Equations for the Activation Energy of Crystallization

Investigation of Crystallization Kinetics in Glassy Se and Binary Se&lt;sub&gt;98&lt;/sub&gt;M&lt;sub&gt;2&lt;/sub&gt; (M=Ag, Cd, Zn) Alloys Using DSC Technique in Non-Isothermal Mode

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Investigation of Crystallization Kinetics in Glassy Se and Binary Se<sub>98</sub>M<sub>2</sub> (M=Ag, Cd, Zn) Alloys Using DSC Technique in Non-Isothermal Mode