Article
Materials Science, Ceramics
Ziliang Li, Kangkang Wang, Jiao Zhang, Feifei Chen, Changgui Lin, Shixun Dai, Wei Ji
Summary: In this study, the third-order optical nonlinearity in Ge-Sb-S chalcogenide glasses with different atomic ratios was characterized. The nonlinear optical parameters were interpreted from a structural perspective using the constrained mode and Raman spectra. The contribution of structure units within the Ge-Sb-S glass network to the third-order optical nonlinearity was evaluated. The results showed that as the mean coordination number approached 2.65, the Ge-Sb-S glass network transitioned to a rigid 3D phase, leading to a rapid increase in the third-order nonlinear susceptibility. Furthermore, the third-order nonlinear susceptibility, dependent on the mean coordination number, exhibited a wide variation, indicating a high modification flexibility for the nonlinear optical properties of Ge-Sb-S chalcogenide glasses.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Ceramics
Yinwei Yang, Oumar Ba, Shixun Dai, Feifei Chen, Georges Boudebs
Summary: The study demonstrates that GIS ChGs exhibit significant third-order optical nonlinearity properties under specific compositions, making them suitable for use in optical devices at long wavelengths.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Ceramics
Guangrui Mao, Ziliang Li, Chengtao Jia, Changgui Lin, Shixun Dai, Tiefeng Xu, Feifei Chen
Summary: This work presents a systematic study on the third-order optical nonlinear (TONL) properties of chalcogenide glasses (ChGs) in the germanium-gallium-sulfur (Ge-Ga-S, GGS) ternary system. The study reveals that the TONL properties of GGS ChGs can be highly tuned by the glass composition, surpassing those of other ChG systems. It is found that the TONL properties of GGS ChGs strongly depend on the deviation level of glass composition from chemical stoichiometry, which is related to the presence of different types of defective units in the GGS glass network. Additionally, the TONL dispersion of GGS ChGs deviates from the classical theories based on crystalline semiconductors due to the occurrence of multiple-step absorption processes between gap states near the band gap. This renders GGS ChGs applicable for various nonlinear optical functionalities.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Materials Science, Multidisciplinary
Zhen Yang, Haonan Hu, Qiuli Li, Zheng Zhang, Lei Niu, Jian Wu, Tengxiu Wei, Yuanhuan Sun, Yiming Fang, Xunsi Wang, Zhiyong Yang, Jinfeng Zhou, Rongping Wang
Summary: By preparing GexSe10Te90-x glasses with varying Te contents and measuring their properties, it was found that the glasses exhibit different optical characteristics depending on the composition, with the nonlinear optical refractive index showing significant variations. These Te-based glasses show potential for applications as mid- and far-infrared nonlinear optical devices.
Article
Materials Science, Ceramics
Kangkang Wang, Wenfeng Wang, Changgui Lin, Xiang Shen, Shixun Dai, Feifei Chen
Summary: Transparent chalcogenide glass ceramics (ChGCs) based on a binary germanium-sulfur (Ge-S, GS) chalcogenide system were synthesized and embedded with GeS2 nanocrystals. The study showed that this material has a smaller optical bandgap energy, higher mechanical strength, and significantly enhanced third-order optical nonlinearity, making it suitable for optical limiting applications.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
I Pethes, P. Jovari, S. Michalik, T. Wagner, V Prokop, I Kaban, D. Szaraz, A. Hannon, M. Krbal
Summary: Short range order and topology of GexS100-x glasses with a composition range of 20 <= x <= 42 at% were investigated using neutron diffraction, X-ray diffraction, and Ge K-edge extended X-ray absorption fine structure (EXAFS) measurements. The experimental data sets were analyzed using the reverse Monte Carlo simulation method. It was observed that both Ge and S atoms in the glasses satisfied the Mott-rule, with Ge and S atoms having 4 and 2 neighbors, respectively. The chemically ordered network model described the structure of these glasses, with Ge-S bonds being preferred and S-S bonds only present in S-rich glasses. Ge-Ge bonds were found to be necessary in Ge-rich glasses, and the connections between Ge atoms, such as edge-sharing GeS4/2 tetrahedra, were analyzed. The frequency of primitive rings was also calculated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Yongsheng Hu, Kangzhen Tian, Tongtong Li, Mingjie Zhang, He Ren, Sisheng Qi, Anping Yang, Xian Feng, Zhiyong Yang
Summary: A systematic investigation on the mid-infrared nonlinear performances of Ge-Sb-S glasses was conducted, revealing key properties and successfully designing a fiber capable of generating a supercontinuum in the mid-infrared range.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Chemistry, Inorganic & Nuclear
V. S. Shiryaev, A. Filatov, E. Karaksina, A. Nezhdanov
Summary: The local structure of Ga-Ge-Sb-Se glasses with a germanium content of 25-33 at.% for active fiber optics was investigated using Raman scattering spectroscopy. It was found that these glasses mainly consist of three different structural units, with the concentration of ethane-like (Se-3/2)Ge-Ge(Se-3/2) units increasing with higher germanium content and lower selenium content. The study also established correlations between glass composition, local structure, and stability.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
A. El-Denglawey, A. Dahshan, K. A. Aly, Y. B. Saddeek
Summary: Various physical and chemical properties of glasses such as average coordination number, cohesion energy, and ionicity have been theoretically estimated in this study. The band gap values have been successfully predicted to decrease with increasing Sb content, making the glasses potential candidates for near-infrared applications. Additionally, changes in properties near stoichiometric composition were observed, indicating a shift in the glass structure towards heteropolar bonding.
Article
Materials Science, Multidisciplinary
T. X. Wei, Z. Zhang, Z. Yang, Y. Sheng, R. P. Wang
Summary: By measuring the optical properties of GexGa4S96-x (x=22.5, 27, 30, 33.3 and 36) glasses, such as optical bandgap Eg, hardness, linear and nonlinear refractive index and laser damage threshold, we found that Ge30Ga4S66 glass has the highest Eg and laser damage threshold. The linear refractive index increases with increasing Ge content, while the nonlinear refractive index reaches a minimum in Ge30Ga4S66 glass. The correlation between them can be described by Miller's rule. Therefore, Ge30Ga4S66 glass with chemically stoichiometric composition might be an ideal choice for chalcogenide-based optical amplifiers.
CHALCOGENIDE LETTERS
(2022)
Article
Instruments & Instrumentation
Weilu Sun, Xiaolin Liang, Junkai Sheng, Keyu Yang, Qianqian Peng, Yuze Wang, Kai Jiao, Xiange Wang, Zan Feng, Jun Wang, Guolin Wu, Jinjing Wang, Zheming Zhao, Xunsi Wang, Rongping Wang
Summary: It is reported that the absorption of impurities in Ge-As-S glass can be effectively removed by oxygen and hydrogen getters during static vacuum distillation, and the heterophase inclusions can be thoroughly eliminated by dynamic distillation. Low-loss Ge-As-S glass fibers without any visible particles or heterophase inclusions have been successfully developed.
INFRARED PHYSICS & TECHNOLOGY
(2022)
Article
Materials Science, Multidisciplinary
I. L. Snetkov, R. D. Blagin, V. S. Shiryaev, E. V. Karaksina
Summary: This study investigates the thermo-optical and magneto-optical properties of high-purity GexAsySbzS100-x-y-z glasses. The results suggest that these glasses have promising potential as optical elements for Faraday devices operating in high power laser radiation.
Article
Materials Science, Ceramics
D. Tsiulyanu, M. Veres, R. Holomb, M. Ciobanu
Summary: The Raman scattering of nonstoichiometric chalcogenide alloys reveals the structural transformations and unusual features of these glasses. Narrow compositional areas with high structural self-organization were observed, mainly due to the increase of highly flexible species, such as quasi-tetrahedral (QT) S=As(S1/2)3. The composition (GeS4)x(AsS3)1-x around Ge7.7As15.3S77 exhibited a strongly self-organized glass with a high concentration of QT S=As(S1/2)3, forming the building blocks of the structure. The Raman scattering strengths correlated well with the middle range ordering parameters, molar volume, and elastic modulus.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Article
Chemistry, Physical
P. Kutalek, E. Samsonova, J. Smolik, P. Knotek, J. Schwarz, E. Cernoskova, P. Janicek, L. Tichy
Summary: Laser direct writing at 532 nm was used to create microlenses and microcraters in stoichiometric (GeS2)x(As2S3)(1-x) bulk glasses. The influence of chemical composition and illumination conditions on microlens formation was studied. Characterization of the microlenses and nonilluminated area was carried out to identify potential differences in properties. The microlenses showed potential applicability in miniaturization optics. In-situ microlens formation was also studied using a modified thermo-mechanical analyzer.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Lizhu Li, Amey R. Khanolkar, Julien Ari, Pierre Deymier, Pierre Lucas
Summary: The elastic properties of Ge-Se glasses decrease with increasing irradiation intensity, particularly in glasses with high coordination numbers. The kinetics observed during irradiation suggest a thermal origin rather than a photoinduced electronic process. Experimental evidence indicates that the observed photoelastic phenomena are more likely the result of laser heating.
Article
Materials Science, Ceramics
Deniz Bozoglu, Sahin Yakut, Kemal Ulutas, Deniz Deger
Summary: Thin film polyethylene oxide, produced by the thermal evaporation technique, exhibits structural and property differences compared to bulk polyethylene oxide. The dielectric constant of polyethylene oxide thin film is 10 times greater than that of bulk polyethylene oxide. There is consistency among dielectric constants, activation energies, and free volume fractions for both thin film and bulk samples. Polyethylene oxide thin film is observed to be more brittle than bulk polyethylene oxide.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Xiaozhen Fan, Zhuo Wang, Zheng Fang, Huiqun Ye, Jinju Zheng, Jianqiang Zhang, Yanjun Qin, Yao Zhai, Yanlong Miao, Zixiang Zhao, Can Yang, Jiajun He, Zhenghang Wei, Yunzhang Fang
Summary: The microscopic strain evolution and microstructural of FeCuNbSiB amorphous alloy samples were studied under both free and tensile stress annealing conditions. It was found that an amorphous-nanocrystalline structure was developed in both samples after annealing at 813 K, and the size of nanocrystals was limited by the applied stress.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Atsushi Tanaka, Atsuki Saito, Takashi Murata, Ayako Nakata, Tsuyoshi Miyazaki
Summary: Although molecular dynamics (MD) simulation is a powerful tool for investigating the atomic-scale structures of complex materials, its reliable and accurate application to multi-component glass systems faces challenges due to limited force fields (FFs) and the complexity of chemical environments. This study demonstrates the feasibility of efficient and accurate large-scale density functional theory (DFT) calculations for multi-component glass systems. The evaluation of classical FFs based on the results of large-scale DFT calculations reveals low accuracy for non-bridging oxygen atoms, and differences in Si-O-Si angle distribution and electronic structure for X = Mg.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Petr Shvets, Ksenia Maksimova, Aleksandr Goikhman
Summary: In this study, vanadium oxide xerogel samples were successfully synthesized through a liquid phase reaction and the interaction of films with water. The samples were thoroughly analyzed using X-ray diffraction and Raman spectroscopy, revealing the existence of two distinct phases. It was also discovered that previous misinterpretations regarding the high-pressure polymorph structure were due to the formation of a high-temperature phase. These findings highlight the potential for further refining and expanding the current structural models of vanadium oxide xerogel in future research efforts.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Yiran Zhang, Jing Pang, Qingchun Xiang, Dong Yang, Yinglei Ren, Xiaoyu Li, Keqiang Qiu
Summary: The effect of the volume fraction of body-centered cubic (BCC) crystal on the room temperature brittleness of Fe-based amorphous nanocrystalline alloys was investigated. Molecular dynamics simulations were conducted to obtain seven model samples with different embedded BCC nanocrystal contents. The results showed a gradient decrease in the plasticity of the alloys with different nanocrystal contents.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Moustafa Sahnoune Chaouche, Hani K. Al-Mohair, Shavan Askar, Barno Sayfutdinovna Abdullaeva, Naseer Ali Hussien, Ahmed Hussien Alawadi
Summary: In this work, a novel micromechanical data-driven machine learning framework was proposed to characterize material parameters in bulk metallic glasses. The framework utilized nanoindentation simulations with Berkovich and spherical tips to compile a vast collection of data on material behavior in BMGs. The developed machine learning model efficiently predicted critical material properties and highlighted the importance of input feature weight functions.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Louisiane Verger, Vinuyan Ganesaratnam, Virginie Nazabal, Sebastien Chenu, Christophe Calers, David Le Coq, Laurent Calvez, Olivier Hernandez, Xiang-Hua Zhang
Summary: Crystallization in Ga, Sb, and Se glasses was studied, and a correlation between Se content, crystalline phases, and electrical conductivity was observed. The resulting glass-ceramics exhibited significantly higher conductivity compared to other Se-based glass-ceramics.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Seong-Sik Shin, Ga-Yeong Kim, Byeonggwan Lee, Jae-Hwan Yang, Yeon-Su Son, Jung-Hoon Choi, Jae-Young Pyo, Ki Rak Lee, Hwan-Seo Park, Hyun Woo Kang
Summary: In this study, silver tungstate-tellurite glass with different loading of AgI was developed for immobilization of radioactive iodine. The effects of increasing the amount of AgI on the glass matrix were investigated. The leaching properties of all samples were evaluated, and it was found that the release of all elements satisfied the US regulation.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Chunghee Nam
Summary: This study demonstrates the prediction performance of a CNN regression model for the magnetic entropy changes and transition temperatures of bulk metallic glasses with magnetocaloric effects. The model achieved high prediction performance, as measured by the determination coefficient and root mean square error. The results showed good agreement with experimental values and reported results.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
A. Hosny, Y. M. Moustafa, G. El-Damrawi
Summary: In this study, crystalline glass ceramics were obtained directly from glasses using an ion exchange process between lead bromide and oxygen ions. The addition of lead bromide caused significant changes in the glass structure and the formation of specific crystalline phases.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Luana Cristina Feitosa Alves, Jheimison Ferreira Gomes, Natacya Fontes Dantas, Maria Nayane Queiroz, Pablo Nabuco Portes, Francielle Sato, Nilma de Souza Fernandes, Karina Miyuki, Celso Vataru Nakamura, Alysson Steimacher, Franciana Pedrochi
Summary: This study evaluated the influence of CaF2 addition on the bioactivity of the samples. The results showed that the samples exhibited good bioactivity and cytocompatibility, making them suitable for biomedical applications.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
N. Keninger, S. Feller
Summary: The principles of Topological Constraint Theory (TCT) were used to study alkali borate and silicate glass systems. Structural models were developed based on experimental data and used to predict properties of the glass.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Hao Wang, Chengliang Zhao, Chuntao Chang, Shengli Zhu, Zhankui Zhao
Summary: The relationship between the heterogeneous structure and structural relaxation in metallic glasses was explored by investigating the quasielastic and viscoelastic behavior of a Zr55Cu30Ni5Al10 metallic glass. Stress-annealing treatment was used to retain elastic strain energy, and a unique creep recovery phenomenon was observed during the reheating process. The Maxwell model was employed to qualitatively describe the mechanisms of elastic strain energy retention and release.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Sihyung Lee, Giyeol Han, Karuppasamy Pandian Marimuthu, Hyungyil Lee
Summary: This study presents a method for extracting FVM parameters of Zr-based TFMG using MD and FEA, and validates the method through simulation and experiments.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)
Article
Materials Science, Ceramics
Nedra Saad, Mohamed Haouari, Mayssa Ibrahim, Noura Amamou
Summary: In this work, we investigated the optical properties of a fluorophosphate glass system doped with Tb3+ and Eu3+ ions. We found that the emitted light can be tuned by changing the doping concentration, excitation wavelength, or excitation power, which is important for the design of solid-state lighting sources.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2024)