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Journal articles on the topic 'Chalcogenide Glasses (ChGs)'

Author: Grafiati
Published: 6 September 2023
Last updated: 31 July 2025

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1

Pal, Shiv Kumar, N. Chandel, and N. Mehta. "Synthesis and thermal characterization of novel phase change materials (PCMs) of the Se–Te–Sn–Ge (STSG) multi-component system: calorimetric studies of the glass/crystal phase transition." Dalton Transactions 48, no. 14 (2019): 4719–29. http://dx.doi.org/10.1039/c8dt03729a.

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According to recent literature, germanium-containing chalcogenide glasses (ChGs) show improvement in thermal stability and glass-forming ability because of the self-organization of the glass network towards a more rigid structure.
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2

Khan, Pritam, and K. V. Adarsh. "Light-Induced Effects in Amorphous Chalcogenide Glasses: Femtoseconds to Seconds." Physics 3, no. 2 (2021): 255–74. http://dx.doi.org/10.3390/physics3020019.

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Amorphous chalcogenide glasses are intrinsically metastable, highly photosensitive, and therefore exhibit numerous light-induced effects upon bandgap and sub-bandgap illumination. Depending on the pulse duration of the excitation laser, ChGs exhibit a series of light-induced effects spanning over femtosecond to seconds time domain. For continuous wave (CW) illumination, the effects are dominantly metastable in terms of photodarkening (PD) and photobleaching (PB) that take place via homopolar to heteropolar bond conversion. On the other hand, under nanosecond and ultrafast pulsed illumination,
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3

Saraswat, Vishnu, A. Dahshan, Z. Khattari, and Neeraj Mehta. "High-energy radiation shielding characteristics of SeTeSnZn chalcogenide glasses (STSZ ChGs)." Progress in Nuclear Energy 173 (August 2024): 105224. http://dx.doi.org/10.1016/j.pnucene.2024.105224.

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4

Saraswat, Vishnu, A. Dahshan, H. I. Elsaeedy, Z. Khattari, and Neeraj Mehta. "High-energy radiation shielding characteristics of SeTeSnAg chalcogenide glasses (STSA ChGs)." Optical Materials 148 (February 2024): 114886. http://dx.doi.org/10.1016/j.optmat.2024.114886.

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5

Li, Jialin, Kelun Xia, Jierong Gu, et al. "Refractive index improvement of commercial chalcogenide glasses by external doping with Ag and Pb." Optical Materials Express 13, no. 6 (2023): 1700. http://dx.doi.org/10.1364/ome.489361.

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The refractive index of commercial chalcogenide glasses (ChGs) available in the market is generally 2.4 to 2.7, which is relatively low and has huge room for improvement. In this paper, different ratios of Ag/Pb were doped into commercial glasses by the melt-quenching method to substantially increase their refractive index. The refractive index of the commercial Ge28Sb12Se60 glass was increased from 2.6 to 3.05 by external doping with 20 atomic percentage (at%) of Ag. And the refractive index of commercially available Ge33As12Se55 glass was increased from 2.45 to 2.88 by external doping with 9
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6

Yang, L., G. J. Zhou, and C. G. Lin. "Composition-dependent properties and network structure of Ge-Se-Te chalcogenide glasses." Chalcogenide Letters 20, no. 1 (2023): 1–9. http://dx.doi.org/10.15251/cl.2023.201.1.

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Ge12.5Se87.5-xTex (0≤x≤45) glasses were selected for elucidating the composition-dependent properties and network structure of Te-containing glasses. With increasing Te content (x), Vickers hardness (Hv) and glass transition temperature (Tg) initially increased and then decreased, showing a compositional threshold at x=27.5. It is found that the compositional trend of Hv and Tg is in good accordance with the structural evolution studied by Raman spectra. The results suggest that the introduction of Te leads to the evolution of the network connectivity and average bond strength of Ge12.5Se87.5-
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7

Dahshan, Alaa, Horesh Kumar, and Neeraj Mehta. "Role of some modifiers on the thermo-mechanical properties of Se90In10 chalcogenide glass (ChGs)." European Physical Journal Applied Physics 94, no. 3 (2021): 31101. http://dx.doi.org/10.1051/epjap/2021210044.

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The studies on the micro-hardness of ChGs provide useful information regarding their straightforward involvement in the fabrication of sensors, fibers, and other optical elements for direct use in infrared optics. This work deals with the mechanical response of the glassy Se90In10 alloy under the influence of additives (Sn, Ag, Sb, and Ge). For this, we have determined the micro-hardness of all glassy alloys. Using the values of Vickers hardness (Hv), glass transition temperature (Tg), and present glasses, we have calculated the other significant thermo-mechanical parameters. The effect of Sn,
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8

Belciu, Miruna-Ioana, and Alin Velea. "Ensemble Machine Learning for the Prediction and Understanding of the Refractive Index in Chalcogenide Glasses." Molecules 30, no. 8 (2025): 1745. https://doi.org/10.3390/molecules30081745.

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Chalcogenide glasses (ChGs) are a class of amorphous materials presenting remarkable mechanical, optical, and electrical properties, making them promising candidates for advanced photonic and optoelectronic applications. With the increasing integration of artificial intelligence in modern materials design, we are able to systematically select, prepare, and optimize appropriate compositions for desired applications in a manner that was unachievable before. This study employs various machine learning models to reliably predict the refractive index at 20 °C using a small dataset of 541 samples ex
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9

Pal, Shiv Kumar, Neeraj Mehta, John C. MacDonald, and Dipti Sharma. "Composition dependence of thermo-dynamical and thermo-mechanical properties in SeTeSnGe chalcogenide glasses (ChGs)." European Physical Journal Applied Physics 90, no. 3 (2020): 31101. http://dx.doi.org/10.1051/epjap/2020200099.

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In this endeavor, we have synthesized novel quaternary glassy Se78-xTe20Sn2Gex (0 ≤ x ≤ 6) alloys by the well-known rapid cooling of melt under quenching technique, to study the effect of Germanium on thermodynamic and thermo-mechanical properties. In particular, we employed Differential Scanning Calorimetry (DSC) technique for the investigation of thermodynamic parameters (e.g., specific heat Cp and enthalpy ΔH) in the glass-transition-region (GTR). Differential Scanning Calorimetry (DSC) experiment was run under non-isothermal conditions. The thermo-mechanical parameters i.e., micro-hardness
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10

Pal, Shiv Kumar, Amit Kumar, and N. Mehta. "Signature of rigidity percolation effect in dielectric behavior of germanium containing multi-component chalcogenide glasses (ChGs)." Ceramics International 45, no. 13 (2019): 16279–87. http://dx.doi.org/10.1016/j.ceramint.2019.05.153.

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11

Aoki, T., D. Saitou, K. Fujimoto, et al. "Quadrature frequency resolved spectroscopy (QFRS) of radiative transitions of Er3+and Nd3+ions in chalcogenide glasses (ChGs)." Journal of Physics: Conference Series 253 (November 1, 2010): 012010. http://dx.doi.org/10.1088/1742-6596/253/1/012010.

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12

Dabban, M. A., Esam M. G. Al-Badwi, and Sarah M. Al-Khadher. "THEORETICALLY PREDICTED DEVIATION IN PHYSICAL PROPERTIES OF GE-BI-S CHALCOGENIDE ALLOYS WITH COMPOSITIONAL VARIATIONS." Electronic Journal of University of Aden for Basic and Applied Sciences 4, no. 1 (2023): 66–78. http://dx.doi.org/10.47372/ejua-ba.2023.1.221.

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Chalcogenide glasses (ChGs) semiconductors have several useful properties, especially in their technical applications. The present work explains the compositional dependence of many physical properties of GexBi5S95-x (x = 0, 10, 20, 30, 35 and 45 at. %). Increasing Ge content reduces the fraction of floppy modes, the lone pair electrons, the stoichiometric deviation, and the heat of atomization, while the average coordination number 〈r〉, constraints, density, and molar volume increased, indicating the alloys have moved from floppy to rigid mode. The average overall bond energy, electronegativi
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13

Zhang, Fan, Qing Yang, Hao Bian, Minjing Li, Xun Hou, and Feng Chen. "Fabrication of Chalcogenide Glass Based Hexagonal Gapless Microlens Arrays via Combining Femtosecond Laser Assist Chemical Etching and Precision Glass Molding Processes." Materials 13, no. 16 (2020): 3490. http://dx.doi.org/10.3390/ma13163490.

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Chalcogenide glasses (ChGs) are emerging as critical infrared (IR)-enabled materials in advanced IR optical systems by the wealth of their transparency in the key wide infrared (IR) transmission window. However, fabrication of ChG-based integrated micro-optical components in an efficient and economical way remains a huge challenge. In this paper, a 3D close-packed hexagonal microlens array (MLA) possessing over 6000 convex hexagonal micro-lenslets with the size of tens of micrometers within a footprint of 10 mm × 10 mm on a Ge20Sb15Se65 ChG surface was successfully fabricated via a precise the
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14

Srivastava, Aditya, M. Shaheer Akhtar, Ahmad Umar, et al. "Comparative Study on Structural and Optical Properties of Se85Te6Bi9 Nano-Thin Films Synthesized at Disparate Ambient Argon Pressures." Science of Advanced Materials 15, no. 1 (2023): 10–16. http://dx.doi.org/10.1166/sam.2023.4397.

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In this research work, we have synthesized amorphous Se85Te6Bi9 Chalcogenide Glasses (ChGs) using Melt Quenching Technique. The glassy nature of the synthesized specimen was confirmed by the DSC thermogram plotted at the heating rate of 20 K/min. The nano-thin films of such synthesized samples at two disparate working pressures (1 torr and 3 torr) of ambient argon gas were made using the Physical Vapour Condensation Technique on the ultrasonically cleaned glass substrates. During the synthesis process of nano-thin films substrate temperature (77 K) was kept constant using liquid nitrogen and t
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15

-, Ruchika, and Manish Dev Sharma -. "Investigation Of Dielectric Relaxation In Se78-yTe20Sn2Cdy Chalcogenide Glasses." International Journal For Multidisciplinary Research 5, no. 5 (2023). http://dx.doi.org/10.36948/ijfmr.2023.v05i05.7879.

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Chalcogenide glasses (ChGs) have emerged as a focal point of scientific research over the past decade due to their wide-ranging applications in electronics, optics, optoelectronics, X-ray imaging, and photonics. These multifunctional materials have attracted significant attention for their potential use in amorphous semiconductor devices, such as optical DVDs, phase change memory devices for energy conservation, RAM, waveguides, optical fibers, and low-cost solar cells. ChGs exhibit unique structural and chemical disorders resulting from their lack of long-range order and inherent defects with
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16

Wang, Chunxu, Jingcui Song, Zhaohuan Ao, et al. "High‐Gain Waveguide Amplifiers in Ge25Sb10S65 Photonics Heterogeneous Integration with Erbium‐Doped Al2O3 Thin Films." Laser & Photonics Reviews, December 15, 2023. http://dx.doi.org/10.1002/lpor.202300893.

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AbstractHigh‐efficiency optical waveguide amplifiers are becoming desperately desirable in integrated photonics to provide sufficient power compensations. Various material platforms have been employed to realize on‐chip waveguide amplifiers to date. Chalcogenide glasses (ChGs), as one of the well‐developed and promising optical platforms, have been extensively studied due to the excellent properties of low loss and high third‐order nonlinearity. However, the performances of their waveguide amplifiers are far from expectations on account of the intrinsic natures of low rare‐earth ion solubility
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17

Saraswat, Vishnu, A. Dahshan, H. I. Elsaeedy, and Neeraj Mehta. "Impact of micro-indentation load/time and Zinc concentration on the thermo- mechanical characteristics of amorphous Se78Te20Sn2 alloy." Physica Scripta, January 26, 2024. http://dx.doi.org/10.1088/1402-4896/ad2321.

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Abstract We have performed hardness measurement experiments under different loads and loading times by performing micro-indentation marks in the present work. Chalcogenide glasses (ChGs) comprising Se78Te20Sn2 and Se78-xTe20Sn2Znx (where x = 0, 2, 4, & 6) alloys are the subject of micro-indentation tests in this work. We have utilized both micro-indentation and optical microscopic methods to determine Vickers hardness. Thermal glass transition phenomena have been identified through DSC techniques. The modulus of elasticity (E), an essential mechanical property, has been evaluated using est
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18

Zheng, Wenfeng, Kelun Xia, Guang Jia, et al. "Customized linear refractive index GRIN prepared by rapid sintering of multilayer chalcogenide glass powders." Journal of the American Ceramic Society, March 4, 2024. http://dx.doi.org/10.1111/jace.19780.

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AbstractGradient refractive index (GRIN) lenses have recently become a hot topic in compact imaging and achromaticity. Current research focuses on exploiting GRIN materials and upgrading the preparation technology. In this study, infrared (IR) GRIN materials were successfully prepared by spark plasma sintering of multilayer chalcogenide glass (ChGs) powders. ChGs powders were derived from the Ge20Se80‐xTex series glasses (x = 0–28 mol%) with a maximum refractive index difference (Δn) of 0.25. The similar glass transition temperatures (ΔTg < 10°C) promote efficient sintering of multilayer po
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19

Alvarez, Roberto, Anna Zachariou, Ilya Mingareev, et al. "Photothermally‐Engineered Crystallization of GAP‐Se Bulk Chalcogenide Nanocomposites toward the Realization of 3D Gradient Refractive Index Profiles." Advanced Optical Materials, November 26, 2024. http://dx.doi.org/10.1002/adom.202401552.

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AbstractTailorability of a medium's optical properties, specifically refractive index and dispersion, is key to enabling compact optical designs. Chalcogenide glasses (ChGs) are widely used for infrared (IR) imaging applications, and the development of gradient refractive index (GRIN) optics. This work extends efforts to create and characterize 3D GRIN profiles in bulk multi‐component Ge‐As‐Pb‐Se (GAP‐Se) ChGs through spatially selective conversion of commercial glass to glass ceramic. This work extends prior efforts on bulk and film lab‐scale glass media, to that of a commercially produced ma
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20

Saraswat, Vishnu, A. Dahshan, H. I. Elsaeedy, Z. Khattari, and Neeraj Mehta. "High-energy radiation shielding characteristics of SeTeSnM (M = Ag, Bi, Cd, Zn) chalcogenide glasses (STSM ChGs)." Ceramics International, January 2024. http://dx.doi.org/10.1016/j.ceramint.2024.01.142.

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21

Chandel, Namrata, and Neeraj Mehta. "Analysis of physicochemical properties in covalent network chalcogenide glasses (ChGs): critical review of theoretical modeling of chemical bond approach." SN Applied Sciences 1, no. 7 (2019). http://dx.doi.org/10.1007/s42452-019-0654-6.

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22

Sarswat, Kaushal Kumar, Sangeeta Singh, and Neeraj Mehta. "Investigating Reaction Kinetics of Crystallization Mechanism in Se78-xTe20Sn2Inx (x = 0, 2, 4, 6) Chalcogenide Glasses (ChGs): Insights into Compositional Effects." Brazilian Journal of Physics 55, no. 4 (2025). https://doi.org/10.1007/s13538-025-01788-9.

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