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

Dohare, C.; Mehta, N.

doi:10.4236/jcpt.2012.24025

Cited by 10 publications

(3 citation statements)

References 18 publications

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“…To investigate the reaction dynamics during thermal treatment, the Kissinger and Ozawa methods were adopted to calculate the activation energy of the reaction . Their corresponding equations are presented below:

Kissinger equation : ln (\frac{β_{i}}{T_{pi}^{2}}) = ln \frac{A_{k} R}{E_{k}} - \frac{E_{k} 1}{R T_{pi}}, i = 1, 2, 3, 4 \dots;

Ozawa equation: log β = log (\frac{italicAE}{R G ()(, a)}) - 2.315 - 0.4567 \frac{E}{RT}

where β i refers to the heating rate, T pi is the peak temperature of the maximal mass‐loss rate, R is the gas constant, while the model parameters A k and E k refer to the frequency factor and activation energy, respectively, and G ( a ) is the integral equation of the reaction.…”

Section: Resultsmentioning

confidence: 99%

Microstructural evolution and kinetics analysis of aluminum borate ceramics via solid‐state reaction synthesis

Luo

Xiang

et al. 2019

Int J Applied Ceramic Tech

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Aluminum borate ceramics (ABCs) with a skeleton structure of rod-like crystals were established via a solid-state reaction synthesis. The influence of heat treatment systems on the phase composition and microstructural evolution of an anisotropic grain were firstly studied. Next, the impact of boric acid content on the activation energy of reaction, microstructure, mechanical properties, and neutron shielding

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Kissinger equation : ln (\frac{β_{i}}{T_{pi}^{2}}) = ln \frac{A_{k} R}{E_{k}} - \frac{E_{k} 1}{R T_{pi}}, i = 1, 2, 3, 4 \dots;

Ozawa equation: log β = log (\frac{italicAE}{R G ()(, a)}) - 2.315 - 0.4567 \frac{E}{RT}

Section: Resultsmentioning

confidence: 99%

Microstructural evolution and kinetics analysis of aluminum borate ceramics via solid‐state reaction synthesis

Luo

Xiang

et al. 2019

Int J Applied Ceramic Tech

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“…They have many applications in optoelectronics such as photo-doping, optical imaging, photo lithography and phase change optical recording [20][21][22][23][24][25][26][27]. The effect of Ag-doping to Se-Te alloys on their structural, optical, thermal, and electrical properties have been investigated by various workers [28][29][30][31][32][33][34][35][36][37][38][39][40][41][42][43].…”

Section: Introductionmentioning

confidence: 99%

Thermal stability and crystallization kinetic of Se-Te-Ag glassy alloys and thick films for electronic devices

Hussain,

Ashour,

Yousef

et al. 2024

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The present work has examined the thermal features of glassy chacogenide materials Se0.75-xTe0.25Agx (x = 0, 2, 4, 6, 8, 10 at %). The thermal stability of these compositions has been assessed under non-isothermal conditions using Differential Scanning Calorimetry (DSC), which has been used to find the glass transition temperature (Tg), the initial crystallization temperature (Tin), the temperature corresponding to the top of the crystallization rate (Tp), and the melting temperature (Tm). In addition, the kinetic parameter Kr(T) was given as an additional sign of thermal stability. Among these compositions, it was discovered that Se0.71Te0.25Ag0.04 had the best glass-forming ability and glass-thermal stability. The average coordination numbers of the considered samples have been discussed in relation to these results. Additionally, we measured the sheet resistivity, ρ, whose thickness is equivalent to 1000 nm at heating rate 5 K/min, in this work to study the crystallization kinetics of thick films of Se0.75-xTe0.25Agx (x = 0, 2, 4, 6, 8, 10 at %) in the temperature range of 300 to 625 K. This range was sufficient to draw attention to two substantial areas in the resistivity versus temperature curve, and the derivation of resistivity as a function of temperature established that the films under study only had one crystallization region.

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“…These days, due to their structure, properties and preparation [2][3][4][5][6][7][8][9][10][11][12], Ag doped chalcogenide glasses have become attractive materials for fundamental study. Their application is widely spread over optics and optoelectronics such as optical imaging, photo doping, photo lithography and phase change optical recording [2][3][4][5][6][7][8][9][10][11][12]. Another important reason for popularity of Ag doped chalcogenide glasses is the low free energy of crystallization of Ag (48 kcal/mol) which is helpful in phase change optical recording [10,11].…”

Section: Introductionmentioning

confidence: 99%

Crystallization kinetics of glassy Se90In10-xAgx alloys: Observation of Mayer-Neldel rule

Singh

Mehta

Sharma

et al. 2016

PAC

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Glassy alloys of Se 90 In 10-x Ag x were prepared using melt quenching technique. Non-isothermal differential scanning calorimetric (DSC) studies were done on Se 90 In 10-x Ag x (x = 0, 2, 4, 6, 8 at.%) glassy alloys at four different heating rates (β = 5, 10, 15, 20°C/min). Well defined endothermic and exothermic peaks were obtained at glass transition (T g) and crystallization temperature (T c), respectively. Augis and Bennett's method was used to obtain the composition dependent crystallization activation energy (E c) and the pre-exponential factor (η 0) of the Arrhenius expression. A linear dependence between ln η 0 and E c was observed showing the existence of compensation effects of the Meyer-Neldel type. These compensation effects confirm the applicability of Meyer-Neldel (MN) rule for the non-isothermal crystallization in the present case.

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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

Cited by 10 publications

References 18 publications

Microstructural evolution and kinetics analysis of aluminum borate ceramics via solid‐state reaction synthesis

Microstructural evolution and kinetics analysis of aluminum borate ceramics via solid‐state reaction synthesis

Thermal stability and crystallization kinetic of Se-Te-Ag glassy alloys and thick films for electronic devices

Crystallization kinetics of glassy Se90In10-xAgx alloys: Observation of Mayer-Neldel rule

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