Article
Chemistry, Multidisciplinary
Hao Tian, Huajun Tian, Wu Yang, Fan Zhang, Wang Yang, Qiaobao Zhang, Yong Wang, Jian Liu, S. Ravi P. Silva, Hao Liu, Guoxiu Wang
Summary: Silicon suboxide has shown potential as an anode material for high-energy-density lithium-ion batteries, but issues with electronic conductivity and Coulombic efficiency have hindered its practical application. By designing hollow-structured SiOx@CNTs/C architectures, these issues have been successfully addressed, paving the way for developing high-energy-density LIBs based on SiOx.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Zhaolin Li, Yaozong Yang, Jie Wang, Zhao Yang, Hailei Zhao
Summary: Silicon suboxide (SiOx) is a potential anode material for high-energy-density lithium ion batteries, but its electrochemical performance is hindered by mechanical instability due to volume variation. In this study, a sandwich-like structure is proposed, where SiOx nanoparticles are sandwiched between graphene sheets and amorphous carbon layer, improving the structural stability. The resulting C/SiOx@graphene material exhibits excellent cyclic performance and rate capability, offering a novel strategy to enhance the stability of high-capacity anode materials for lithium/sodium ion batteries.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Chemistry, Physical
Yaozong Yang, Zhaolin Li, Yuesong Xu, Zhao Yang, Yang Zhang, Jie Wang, Hong Xu, Xiangming He, Hailei Zhao
Summary: The need for higher-energy-density batteries has arisen due to the increasing demand for electric vehicles. Silicen (Si) has been considered as an alternative anode material to graphite because of its high theoretical capacity. However, the volume change in Si during charge/discharge cycles leads to particle fracture and rapid capacity degradation. Silicon suboxide (SiOx) anodes exhibit better cycling performance than Si, but electrode reaction kinetics remain insufficient. In this study, fluoroethylene carbonate (FEC)-based electrolyte is proposed to enhance the electrochemical properties of SiOx anodes. The addition of FEC results in higher specific capacity and excellent rate capability for SiOx anodes, leading to improved cycling stability of SiOx||LiFePO4 cells.
JOURNAL OF POWER SOURCES
(2023)
Article
Electrochemistry
Tianxiang Yuan, Renheng Tang, Fangming Xiao, Shiyong Zuo, Ying Wang, Jiangwen Liu
Summary: The silicon suboxide (SiO) anode material shows promise for Lithium-ion batteries (LIBs) due to its high theoretical capacity, but it faces challenges such as large volume change (200%), low electrical conductivity, and low first Coulombic efficiency. A ternary composite ((SiOx/G/SnO2)@C) with a carbon coating layer is developed to address these issues, where graphite as part of the active materials improves Coulombic efficiency and controls volume change, and the carbon coating layer is designed to further restrain the high-volume change of SiOx. With the presence of SnO2, the composite exhibits improved electrochemical performance. Experimental results show that (SiOx/G/SnO2)@C achieves a first charging capacity of 382.6 mAh g(-1) at a current density of 100 mA g(-1), with the Coulombic efficiency improved from 62.2% to 74.9%. After 110 cycles, the capacity reaches 424.6 mAh g(-1) and the capacity retention rate is 103.9%.
ELECTROCHIMICA ACTA
(2023)
Article
Engineering, Environmental
Bingxin Shen, Ning Fu, Yuwen Chen, Wei Shao, Yurong Yan, Jia Huang, Zhenglong Yang
Summary: This study proposes a method to encapsulate low-cost micron-sized silicon suboxide (m-SiOx) into amorphous B, N co-doped carbon nanotube network (SSBCN) through metal cation-assisted carbonization. The encapsulation enables stable volume variation, efficient electron and Li-ion transfer, and fast electrolyte penetration. The SSBCN exhibits high reversible capacities, excellent rate performance, and long-term cycle stability, surpassing other SiOx-based anodes and presenting a new opportunity for m-SiOx in high-performance LIBs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
A. O. Zamchiy, E. A. Baranov, V. O. Konstantinov, N. A. Lunev, S. Z. Sakhapov, I. V. Korolkov, V. A. Volodin
Summary: Polycrystalline silicon films were synthesized through gold-induced crystallization of amorphous silicon suboxide films at temperatures ranging from 210 to 275 °C. The films were characterized by in situ optical microscopy, Raman spectroscopy, and X-ray diffractometry. The first determination of the activation energy for gold-induced crystallization of a-SiO(0.2) was 1.7 +/- 0.1 eV.
Article
Engineering, Multidisciplinary
Zongxian Yang, Chang Liu, Yu Du, Yijun Yang, Huacheng Jin, Xiang Liu, Fei Ding, Liuyang Bai, Yuge Ouyang, Fangli Yuan
Summary: Inspired by earbuds, researchers have designed and synthesized three-dimensional silicon suboxide nanonetworks, and further prepared multi-hierarchical ball-like silicon suboxide/carbon materials with enhanced elasticity and high energy density. As an anode material, the synthesized material exhibits high specific capacity and excellent cycling performance, showing great promise for high-performance battery applications.
COMPOSITES PART B-ENGINEERING
(2022)
Article
Materials Science, Multidisciplinary
A. O. Zamchiy, E. A. Baranov, S. Starinskiy, N. A. Lunev, I. E. Merkulova
Summary: In this study, polycrystalline silicon thin films were synthesized for the first time using Au-induced crystallization of silicon suboxide. The structure and elemental composition of the stacked structure were analyzed using TEM, Raman, and EDX, revealing the formation of poly-Si thin film and a barrier SiO2 layer. The proposed mechanism for the growth of poly-Si thin films involves features such as dewetting of Au films and formation of a SiO2 barrier layer, different from the traditional layer exchange process.
Article
Chemistry, Physical
Stavros X. Drakopoulos, Thomas Cowell, Emma Kendrick
Summary: Low-environmental-impact binder systems are used for graphite-SiO (x) anodes with different physical characteristics. The study investigates the relationship between mass loading, porosity, state of charge, and ohmic and charge transfer resistances. The contribution of SiO (x) to reversible capacity decreases over cycles. An empirical model is presented to describe cycle life based on porosity and mass loading. The study explores the correlation between physical and electrochemical properties for maximum cycle life and faster screening of electrode formulations.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
A. O. Zamchiy, Y. V. Vorobyov, N. A. Lunev, V. O. Konstantinov, S. Z. Sakhapov, E. A. Maximovskiy, E. A. Baranov
Summary: The kinetics of gold-induced crystallization of amorphous silicon suboxide films was studied by varying the annealing temperature. In situ optical microscopy revealed the processes of nucleation and growth of Si crystal structures. A decrease in nucleation rate during annealing was observed and attributed to grain coarsening in the Au film. Experimental data and simulations based on the KJMA theory provided activation energy values for nucleation, growth, and the overall AuIC process of a-SiO0.2.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Zhaolin Li, Hailei Zhao, Xin Tao, Yaozong Yang, Jie Wang, Zhao Yang
Summary: In this study, a graphene-modified lithium silicate (LS) nanodots decorated SiOx-C material was prepared using a sol-gel approach and subsequent heat treatment. The material exhibited fast Li-ion and electron transport, enhancing the electrode reaction kinetics of SiOx. The highly-conductive network of graphene also mitigated the structural stress of SiOx, resulting in excellent structural durability. The electrode showed a reversible capacity of 400 mAh g-1 at 0.5 A g-1 for 200 cycles without obvious capacity degradation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Electrochemistry
Zhaolin Li, Xin Tao, Yaozong Yang, Nana Yao, Zhao Yang, Dawei Luo, Jie Wang, Hailei Zhao
Summary: By using surface engineering, a graphene-coated microsized SiOx material was successfully achieved, which improves the structural integrity and cyclic performance of the electrode.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Physical
Zhe Bai, Jielong He, Jiani Wu, Zhengyu Zhang, Xinping Huang, Jun Li
Summary: In this study, white onion was used as a biomass material to synthesize layered porous SiOx/C anode material through activation treatment, pre-calcination, and aluminothermic reduction. The results showed that the porous structure of SiOx/C could be effectively controlled by varying the activation treatment temperature. The SiOx/C-6 anode material obtained at an activation temperature of 600 degrees C exhibited the best electrochemical performance.
Article
Chemistry, Physical
Zongxian Yang, Yuanjiang Dong, Chang Liu, Xiangqi Feng, Huacheng Jin, Xiaohong Ma, Fei Ding, Baoqiang Li, Liuyang Bai, Yuge Ouyang, Fangli Yuan
Summary: Silicon monoxide (SiO) is a highly promising anode material due to its high capacity and improved cycle stability. This study presents the synthesis of SiO0.4 nanowires with Si shielded by SiOx and the subsequent synthesis of carbon-coated SiO0.4 and carbon nanotubes (SiO0.4/CNTs@C) composite. The SiO0.4/CNTs@C electrode exhibits enhanced initial coulombic efficiency (ICE), increased capacity, and outstanding high-rate cycle performance.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Abigail R. Meyer, P. Craig Taylor, Michael B. Venuti, Serena Eley, Vincenzo LaSalvia, William Nemeth, Matthew R. Page, David L. Young, Paul Stradins, Sumit Agarwal
Summary: Boron-doped Czochralski silicon exhibits reduced minority carrier lifetime under light exposure due to B-O related defects. Electronic paramagnetic resonance has identified spin-active signatures of this phenomenon, shedding light on its microscopic mechanism. The formation of recombination-active defects in Cz Si is correlated with both boron and oxygen impurities.
ENERGY & ENVIRONMENTAL SCIENCE
(2021)
Article
Physics, Applied
Tsubasa Matsumoto, Hiromitsu Kato, Toshiharu Makino, Masahiko Ogura, Daisuke Takeuchi, Satoshi Yamasaki, Takao Inokuma, Norio Tokuda
APPLIED PHYSICS LETTERS
(2019)
Article
Materials Science, Multidisciplinary
M. Nagai, Y. Nakamura, T. Yamada, T. Tabakoya, T. Matsumoto, T. Inokuma, C. E. Nebel, T. Makino, S. Yamasaki, N. Tokuda
DIAMOND AND RELATED MATERIALS
(2020)
Article
Physics, Applied
Aboulaye Traore, Hiromitsu Kato, Toshiharu Makino, Tsubasa Matsumoto, Norio Tokuda, Masahiko Ogura, Yukako Kato, Daisuke Takeuchi, Satoshi Yamasaki
JAPANESE JOURNAL OF APPLIED PHYSICS
(2020)
Article
Physics, Applied
Xufang Zhang, Tsubasa Matsumoto, Ukyo Sakurai, Toshiharu Makino, Masahiko Ogura, Mitsuru Sometani, Satoshi Yamasaki, Christoph E. Nebel, Takao Inokuma, Norio Tokuda
APPLIED PHYSICS LETTERS
(2020)
Article
Chemistry, Physical
Xufang Zhang, Tsubasa Matsumoto, Ukyo Sakurai, Toshiharu Makino, Masahiko Ogura, Satoshi Yamasaki, Mitsuru Sometani, Dai Okamoto, Hiroshi Yano, Noriyuki Iwamuro, Takao Inokuma, Norio Tokuda
Article
Chemistry, Physical
Xufang Zhang, Tsubasa Matsumoto, Yuta Nakano, Hitoshi Noguchi, Hiromitsu Kato, Toshiharu Makino, Daisuke Takeuchi, Masahiko Ogura, Satoshi Yamasaki, Christoph E. Nebel, Takao Inokuma, Norio Tokuda
Summary: In this study, inversion-type p-channel metal-oxide-semiconductor field-effect transistors (MOSFETs) were fabricated on heteroepitaxially grown free-standing diamond using silicon-based substrates. The surface roughness was identified as a main limiting factor for the field effect mobility of the heteroepitaxial diamond MOSFET. Further exploration is needed to improve the performance of diamond power devices.
Article
Materials Science, Multidisciplinary
A. M. A. Shamekh, A. Z. Mahmoud, M. A. Abdel-Rahim
Summary: The study investigated the effect of Sb at% on the structural and optical properties of Se85, Te15Sbx (x = 10, 12.5 and 15 at%) glasses. It was found that an increase in Sb at% led to an increase in system rigidity and changes in optical constants.
Article
Materials Science, Multidisciplinary
Kazuto Sakauchi, Masatsugu Nagai, Taira Tabakoya, Yuto Nakamura, Satoshi Yamasaki, Christoph E. Nebel, Xufang Zhang, Tsubasa Matsumoto, Takao Inokuma, Norio Tokuda
Summary: A novel method based on carbon solid solution into nickel via high-temperature annealing was proposed for diamond polishing, leading to improved surface morphology without mechanical damage. The two-step annealing process significantly reduced surface roughness of diamond substrates compared to unannealed samples, and also demonstrated lower surface damage density compared to mechanical polishing.
DIAMOND AND RELATED MATERIALS
(2021)
Article
Materials Science, Ceramics
A. M. A. Shamekh, A. Z. Mahmoud, M. A. Abdel-Rahim
Summary: This study investigated the effects of antimony content on the dc-electrical conductivity of thermally evaporated Se85-xTe15Sbx (x = 2.5, 5, and 7.5 at.%) glassy thin films at different temperature ranges. Various structural and surface morphology analyses were conducted using XRD, DTA, FTIR, and SEM measurements. The results revealed different conduction mechanisms and activation energy values in the chalcogenide glass system, with a modified model proposed to describe the conduction mechanism in the amorphous to crystalline phase transition region.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Physics, Applied
Tsubasa Matsumoto, Tomoya Yamakawa, Hiromitsu Kato, Toshiharu Makino, Masahiko Ogura, Xufang Zhang, Takao Inokuma, Satoshi Yamasaki, Norio Tokuda
Summary: A normally-off inversion p-channel metal-oxide-semiconductor field-effect transistor (MOSFET) with a nitrogen-doped diamond body deposited using microwave plasma-enhanced chemical vapor deposition (MPECVD) was fabricated and exhibited comparable performance to a phosphorus-doped diamond body device. The N-2 used for N-doping is safer and more controllable than the PH3 used for P-doping. The characteristics observed are crucial for the development of diamond power devices.
APPLIED PHYSICS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Yuta Nakano, Xufang Zhang, Kazuki Kobayashi, Tsubasa Matsumoto, Takao Inokuma, Satoshi Yamasaki, Christoph E. Nebel, Norio Tokuda
Summary: The impacts of nitrogen doping on the growth mode, growth rate, and nitrogen incorporation of (111)-oriented diamond films were investigated. The results showed that the 2D nucleation density and growth rate initially increased with increasing nitrogen-to-methane gas ratio, but decreased when the ratio exceeded 200%. The nitrogen incorporation concentration also increased with increasing ratio. These findings are important for optimizing the formation of nitrogen-vacancy centers and for applications in quantum metrology and diamond MOSFET devices.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Kazuki Kobayashi, Xufang Zhang, Toshiharu Makino, Tsubasa Matsumoto, Takao Inokuma, Satoshi Yamasaki, Christoph E. Nebel, Norio Tokuda
Summary: In this study, a new method was proposed to create a buried heavily boron doped p+-structure with a step-free diamond surface in nitrogen doped diamond. Experimental observations and measurements confirmed the successful formation of the buried structure and uniform doping.
APPLIED SURFACE SCIENCE
(2022)
Article
Physics, Applied
Riku Kawase, Hiroyuki Kawashima, Hiromitsu Kato, Norio Tokuda, Satoshi Yamasaki, Masahiko Ogura, Toshiharu Makino, Norikazu Mizuochi
Summary: In this study, phosphorus-doped n-type diamond samples with long spin coherence times were successfully synthesized using tert-butylphosphine, a less toxic alternative to phosphine gas. The results showed that the spin coherence time increased with decreasing nitrogen concentration. Additionally, all measured NV centers were found to be aligned along the [111] direction, and the n-type conduction of the samples was confirmed.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
Hibiki Tabuchi, Yuichiro Matsuzaki, Noboru Furuya, Yuta Nakano, Hideyuki Watanabe, Norio Tokuda, Norikazu Mizuochi, Junko Ishi-Hayase
Summary: The use of electronic spin of nitrogen-vacancy (NV) centers in diamond is a promising approach for high-precision temperature sensors, and pulsed optically detected magnetic resonance (pulsed-ODMR) is a method to measure temperature using NV centers. However, pulsed-ODMR techniques require careful calibration and strict time synchronization, while continuous-wave ODMR (CW-ODMR) offers a simpler approach but with lower sensitivity. Therefore, improving the temperature sensitivity of CW-ODMR techniques is important.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Physics, Condensed Matter
A. M. A. Shamekh, N. M. Shaalan, T. A. Hanafy, M. Rashad
Summary: The structural features of PVA/MgO nanocomposite films with varying MgO concentrations were investigated using XRD and Raman spectra. XRD spectra showed a decrease in PVA crystallinity with the addition of 1 wt% MgO and an increase with higher MgO concentrations. Raman spectra and the increase in width of localized states Ee suggested the formation of structural disorders and defects at the grain boundaries. The optical properties of the films were evaluated and found to be dependent on MgO wt%, providing guidance for tuning the optical properties of flexible optoelectronic devices.
PHYSICA B-CONDENSED MATTER
(2023)
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)