Glass-forming ability and thermal stability of Se100−x(Ge2Sb2Te5)x glassy alloys

Kumar, Aditya; Ram, Indra Sen; Kumar, S. Praveen; Ram, Jagjiwan; Upadhyay, A. N.

doi:10.1007/s10973-018-7412-7

Cited by 3 publications

(2 citation statements)

References 37 publications

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“…Thermally deposited As 2 S 3 films and photopatterned structures surfaces have been found to become degraded when exposed to ambient conditions such as light and humidity . By adding Ge and Se elements into the composition it increases the stability, lifetime, and increases photosensitivity of the film which can have important consequences for device fabrication . Recently, Ge–As–Se glasses were found to have improved optical and thermal stability over As 2 Se 3 as a result of added Ge .…”

Section: Femtosecond Direct Laser Writing and Chemical Etching In Optmentioning

confidence: 99%

“…102 By adding Ge and Se elements into the composition it increases the stability, lifetime, and increases photosensitivity of the film which can have important consequences for device fabrication. 78,[103][104][105][106][107] Recently, Ge-As-Se glasses were found to have improved optical and thermal stability over As 2 Se 3 as a result of added Ge. 108,109 With increasing Ge content into the composition, the glass-transition temperature was shown to increase while the thermal expansion coefficient decreased.…”

Section: Laser Processing and Structures Fabricated In Chalcogenide Glassesmentioning

confidence: 99%

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Advances in femtosecond laser processing of optical material for device applications

Choi

Schwarz

2020

Int J of Appl Glass Sci

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Femtosecond laser induced changes and writing in optical materials have proven to be an excellent route to the production of high-quality micro-and nanofabrication of functional devices. In this paper we present the latest advancements in femtosecond laser processing of optical materials for device applications. We look at femtosecond direct laser writing for photonic device fabrication in fused silica and active glasses.We also discuss femtosecond laser writing and wet chemical etching in fused silica, Foturan, and chalcogenide glasses with applications in microfluidics, optics, sensors, and photonic devices.

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Section: Femtosecond Direct Laser Writing and Chemical Etching In Optmentioning

confidence: 99%

Section: Laser Processing and Structures Fabricated In Chalcogenide Glassesmentioning

confidence: 99%

Advances in femtosecond laser processing of optical material for device applications

Choi

Schwarz

2020

Int J of Appl Glass Sci

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Influence of Er3+ ions addition on thermal and optical properties of phosphate–germanate system

Pop

Bolundut

Păşcuţă

et al. 2019

J Therm Anal Calorim

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Non-Isothermal Crystallization Kinetics and Properties of CaO-Al2O3-SiO2 (CAS) Glass-Ceramics from Eggshell Waste, Zeolite, and Pumice

Aydın,

Toplan,

Toplan

2024

Materials

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In this study, the crystallization behavior, microstructure, and mechanical and physical properties of CaO-Al2O3-SiO2 (CAS)-based glass-ceramics prepared from eggshell waste, zeolite, and pumice were investigated using X-ray diffraction (XRD), differential thermal analysis (DTA), scanning electron microscopy (SEM), a nanoindentation tester, and the Archimedes method. XRD analysis revealed that anorthite and wollastonite crystalline phases precipitated in the glass-ceramic samples after sintering at temperatures of 1000 °C and 1100 °C. However, diffraction peaks belonging to the wollastonite phase disappeared after sintering at 1200 °C, while peaks representing the pseudowollastonite phase were detected together with anorthite in the samples. SEM images showed that the crystals become coarser as the sintering temperature increased, with the crystal morphology transitioning from needle-like to rod-like. The crystallization activation energy (Ea) and Avrami parameter (n), both kinetic parameters, were calculated from DTA curves plotted at different heating rates using the Kissinger, Ozawa, and Matusita approaches. The results indicated that the crystallization activation energy of the CASZ glass ranged from 406 to 428 kJ mol−1, while that of the CASP glass varied from 356 to 378 kJ mol−1, depending on the method used. Additionally, the Avrami constant (n) was calculated to be 3.33 for CASZ and 2.89 for CASP. The hardness and bulk density of the glass-ceramic samples were significantly affected by the porosity present in the structure, with the highest hardness and bulk density values achieved for the CASZ glass-ceramic sample at the initial sintering temperature of 1000 °C.

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Glass-forming ability and thermal stability of Se100−x(Ge2Sb2Te5)x glassy alloys

Cited by 3 publications

References 37 publications

Advances in femtosecond laser processing of optical material for device applications

Advances in femtosecond laser processing of optical material for device applications

Influence of Er3+ ions addition on thermal and optical properties of phosphate–germanate system

Non-Isothermal Crystallization Kinetics and Properties of CaO-Al2O3-SiO2 (CAS) Glass-Ceramics from Eggshell Waste, Zeolite, and Pumice

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