Calorimetric studies of the crystallization process in a-Se75S25−xAgx chalcogenide glasses

Khan, Salman A.; Al-Hazmi, Faten; Faidah, Adel S.; Al-Ghamdi, Ahmed A.

doi:10.1016/j.cap.2008.05.004

Cited by 24 publications

(11 citation statements)

References 36 publications

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“…The increase of E c with silver content in the chalcogenide glasses for the first crystallization is also found in other silver containing systems Ag-As-Se [12]. In the three-component system like Se-S-Ag adding Ag also increases E c values [14]. Values of E c are higher for the second crystallization peak.…”

Section: Glass Transition Activation Energysupporting

confidence: 51%

Kinetic Analysis of Thermal Processes in Ag-As-S-Se System Based on DSC Measurements

et al. 2016

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Thermal properties of glasses from the system Agx(As40S30Se30)100−x for x = 0, 0.5, 1, 3, and 5 at.% were investigated by differential scanning calorimetry. The DSC curves were obtained under non-isothermal conditions which allowed determination of the glass transition temperature Tg (onset temperature), crystallization temperature Tp (corresponding to the crystallization peak maximum), melting temperature Tm, crystallization enthalpy Hc, and melting enthalpy Hm. The DSC curves obtained at the same heating rate were analyzed in order to study the variation of glass transition temperature with Ag concentration. Observed Tg shift toward higher values, with increase in the heating rate, is in agreement with the Lasocka equation. Samples with 3 at.% and 5 at.% Ag were further thermally treated at different heating rates with the aim of analyzing kinetic processes of crystallization. The Moynihan and Kissinger models were used to calculate the activation energy of glass transition and activation energy of crystallization. For the samples that showed the crystallization processes an assessment of the thermal stability was done based on different criteria.

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Section: Glass Transition Activation Energysupporting

confidence: 51%

Kinetic Analysis of Thermal Processes in Ag-As-S-Se System Based on DSC Measurements

et al. 2016

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“…Under this conditions, the Avrami exponent (n) and the effective activation energy (E c ) should be constant during the transformation process. Several studies of crystallization kinetics in binary and ternary chalcogenide glasses by non-isothermal DSC methods have been widely discussed in the literature [15][16][17][18][19][20][21][22][23][24][25][26][27]. For example, Mehta et al [20] have studied a comparative analysis of thermal crystallization in Cu-Ti and Cu-Zr metallic glasses.…”

Section: Introductionmentioning

confidence: 99%

Non-isothermal crystallization kinetic study on Ga15Se85−xAgx chalcogenide glasses by using differential scanning calorimetry

Al-Ghamdi

Alvi

Khan

2011

Journal of Alloys and Compounds

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“…An approach is missing where the effect of different stresses on these materials is studied. This study reports the electrical resistivity change under pressure and temperature of Se 85-x Te 15 Ag x [5]. The variation in properties under different stresses for different compositions specify that these materials can be of great use in fabrication of solid state electronic devices and pressure tolerant electronics [6].…”

Section: Introductionmentioning

confidence: 93%

Electrical Resistivity Change of SeTeAg Compositions to Thermal and Pressure as Stress

Chaudhary¹,

Knn²,

Goyal³

2017

J Material Sci Eng

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To understand the behaviour of materials for applications in solid state electronic devices, the materials are to be exposed to different stresses such as thermal, electrical, humidity, optical, nuclear radiations, pressure (static or dynamic) etc. to better understand their structural, morphology, conduction, optical and sensing properties. The Se85-xTe15Agxcompositions prepared from melt-quench technique were exposed to high pressure (0-10 GPa) and temperature (300-373 K). The results depict the change in resistivity with respect to pressure in forward as well as backward pressurization. These results depicts that there is very small change in resistivity with change in pressure and the change in resistivity with respect to pressure follows the same pattern, when the pressure is applied from atmospheric pressure to 10 GPa and vice versa. The results of resistivity change with the variation of Silver in the compositions are also reported in this study. Similar results are observed in case of resistivity change with respect to temperature. Some deviation is observed in the results which are well explained with average coordination number, fermi level change and crystallinity.

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Calorimetric studies of the crystallization process in a-Se75S25−xAgx chalcogenide glasses

Cited by 24 publications

References 36 publications

Kinetic Analysis of Thermal Processes in Ag-As-S-Se System Based on DSC Measurements

Kinetic Analysis of Thermal Processes in Ag-As-S-Se System Based on DSC Measurements

Non-isothermal crystallization kinetic study on Ga15Se85−xAgx chalcogenide glasses by using differential scanning calorimetry

Electrical Resistivity Change of SeTeAg Compositions to Thermal and Pressure as Stress

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