Article
Physics, Applied
S. N. Holmes, J. Gough, C. Chen, D. A. Ritchie, M. Pepper
Summary: The study found that n-type doped InSb wafers can exhibit variable range hopping transport mechanism induced by Ga+ ion beam damage, with high damage levels showing three-dimensional behavior and lower doses displaying characteristics of Mott phonon-assisted VRH. Controlling the level of damage can alter the transport properties of the devices, allowing for the study of coherent transport processes in the hopping regime.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Chemistry, Physical
S. Lenka, T. Badapanda, P. Nayak, S. Sarangi, S. Anwar, Satya N. Tripathy
Summary: We investigated the crystal structure, dielectric, and conductivity properties of Gd doped Na0.5Bi0.5TiO3 ceramics. The samples exhibited rhombohedral crystal structures with the R3c space group. The Raman modes broadened with an increase in Gd percentage. The temperature-dependent dielectric data showed an increase in maximum dielectric permittivity with Gd content. The conductivity was examined using Arrhenius's equation and Mott's variable-range hopping mechanism.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Materials Science, Multidisciplinary
Lalita Chauhan, Sudhanshu Kumar, K. Sreenivas, A. K. Shukla
Summary: This study on nickel ferrite ceramics revealed multiple relaxations in dielectric, impedance, and modulus spectra, indicating different conduction mechanisms at varying temperatures. Multiple relaxations were observed due to hopping of holes and electrons, with defect hopping only seen at higher temperatures.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Physics, Condensed Matter
Fatih Denbri, Nabil Mahamdioua, Faiza Meriche, Sevgi Polat-Altintas, Cabir Terzioglu
Summary: The role of Pb substitution on the microstructural and magneto-transport properties of LaSm0.4Ca1.6-xPbxMn2O7 (x = 0, 0.1 and 0.2) double layered manganites prepared by the solid-state reaction method was investigated. The results showed that increasing Pb content led to changes in the crystalline phase structure and had an impact on magnetoresistance.
SOLID STATE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
I Dhanya, Malathy Krishnan, Reny Renji, M. K. Anu, Rachel G. Varghese, Sreejith K. Pisharady
Summary: Thin films of Vanadyl 2, 11, 20, 29, Tetra Tert-Butyl 2,3 Naphthalocyanines [VTTBNc] were prepared by vacuum evaporation technique, and their electrical properties were studied. The conductivity of the thin films showed an exponential variation with temperature, while the density of states near the Fermi level decreased and hopping distance increased with thickness and substrate temperature.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Apurba Das, Pamu Dobbidi
Summary: This study investigates the electrical properties of biocompatible ceramic composites and finds that the low conductivity is related to the porous structure, with Motts' variable range hopping (VRH) conduction mechanism being identified as the most suitable for describing the conduction process in the composites. The study suggests the practical potential of applying the designed bio-composites in generating bio-electrets or understanding the forefront of research on electrical properties for bone tissue engineering applications.
Article
Chemistry, Physical
Jicheng Zhang, Qi Yang, Jiankun Wu, Jia Li, Zhaoguo Li
Summary: The electrical transport properties of zirconium oxynitride films are investigated, and a transition from positive to negative magnetoresistance is observed in the variable-range hopping transport regime with decreasing temperature. The positive magnetoresistance is caused by the shrinkage effect of electronic wavefunctions, while the negative magnetoresistance, independent of magnetic field orientations, can be attributed to Zeeman splitting and/or spin-flip hopping effect of localized states. Further experimental studies are required to elucidate the exact transition mechanism.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Helmut Werheit, Bernhard Herstell, Walter Winkelbauer, Gabriel Pristas, Slavomir Gabani, Karol Flachbart, Sulkhan Shalamberidze
Summary: This study investigates the electronic properties of B4.3C and finds that the electrical conductivity follows Mott's law of variable-range hopping at low temperatures and is thermally activated at high temperatures, with the activation energy providing information about the energy position of gap states related to the chemical composition.
SOLID STATE SCIENCES
(2022)
Review
Physics, Condensed Matter
Miguel Ortuno, Francisco Estelles-Duart, Andres M. Somoza
Summary: This review examines numerical simulations of variable-range hopping in 2D and 3D systems with localized states due to disorder, considering both interacting and noninteracting systems. It discusses the main theories for variable-range hopping, such as Mott's and Efros and Shkolvskii's, and presents numerical techniques used for this problem. The focus is on the proportionality constant's impact on characteristic temperatures in different conduction laws and the form of the pre-exponential factor.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2022)
Article
Chemistry, Inorganic & Nuclear
P. A. Francis Xavier, M. D. Benoy, Seenamol K. Stephen, Thomas Varghese
Summary: The study successfully synthesized hydrochloric acid doped polyaniline - multiwalled carbon nanotube nanocomposites, which exhibit high electrical conductivity, good thermal stability, and potential applications operating at high temperatures. Analysis of the charge transport mechanism and validation of mathematical models provide insight for further electrical applications.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Physics, Multidisciplinary
Nooshin Aghashahi, Mohammad Reza Mohammadizadeh, Parviz Kameli
Summary: This study analyzed samples obtained by reducing Rutile TiO2 with Mg to determine the suboxide phases and dominant structural phase in each sample. The results showed that increasing the heat treatment temperature or the amount of reducing agent led to an increase in the amount of suboxide phases and TiO being the main phase in samples with low electrical resistivity. The hopping conduction mechanism was investigated and characterized, showing a transition from nearest neighbor hopping to Mott-variable range hopping conduction regimes at around 65 K. The Efros-Shklovskii VRH conduction process was observed at low temperatures below 18 K. The obtained hopping parameters indicated that the low resistivity samples were close to the metal-insulator transition. In samples with high electrical resistivity, the hopping conduction relations did not fit the resistivity-temperature curves, possibly due to resistive switching behavior and changes in conductivity properties depicted in the current-voltage curve.
Article
Chemistry, Physical
Song Yi Back, Hyunyong Cho, Jong-Soo Rhyee
Summary: The study investigated the electrical transport properties of In1-xPbxTe compounds, finding that small Pb doping induces charge localization and leads to variable range hopping transport. The transition from Mott to Efros-Shklovskii type VRH transport was observed with decreasing temperature, along with unconventional negative MR behavior in Pb-doped compounds. The results suggest strong electron-electron Coulomb interactions and significant changes in density of states in these compounds.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Ying Zhao, Jiawei Wang
Summary: Investigated the effect of carrier concentration on the Seebeck coefficient in Gaussian disordered organic semiconductors (GD-OSs), and developed a general model to predict the thermoelectric properties and explain experimental data, which deepens our understanding of charge transport in organic semiconductors and provides guidance for optimizing thermoelectric device performance in disordered systems.
Article
Materials Science, Multidisciplinary
Ofek Asban, Alexander Burin, Alexander Shnirman, Moshe Schechter
Summary: This study investigates the impact of a metal plate on the variable range hopping conductivity of a two-dimensional electron-glass system. It reveals both static and dynamic effects, with the former increasing conductivity at very low temperatures and the latter suppressing phonon-assisted hopping and conductivity over a wider temperature range than the static effect. The findings provide insights into the behavior of electron-glass systems with external influences.
Article
Engineering, Electrical & Electronic
Anha Masarrat, Anuradha Bhogra, Ramcharan Meena, Rajashri Urkude, Asad Niazi, Asokan Kandasami
Summary: The temperature-dependent electrical resistivity of Ni-doped CoSb3 system was studied to identify the conduction mechanism at different temperatures. It was found that Ni doping significantly reduced the resistivity and formed an n-type Skutterudite phase, leading to promising thermoelectric properties.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
O. F. Goktas, N. E. Koksal, O. Kaplan, A. Yildiz
Summary: The sol-gel method was used to fabricate Al-doped ZnO (AZO) thin films on p-Si substrates with smooth surfaces and highly oriented crystal structures. The analysis revealed that the AZO/Si heterojunctions exhibited nonideal diode behavior, with the 80 nm thick AZO layer demonstrating good rectifying properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Materials Science, Multidisciplinary
E. Kutlu-Narin, P. Narin, A. Yildiz, S. B. Lisesivdin
Summary: The study looked at the effects of magnesium content and growth temperature on the optical and structural properties of magnesium zinc oxide films, finding a linear correlation between magnesium mole fraction and magnesium content in the liquid solution. The peak of the (0002) diffraction for the grown samples shifted to higher angles and became stronger with increasing magnesium content in the liquid solution. Both growth temperature and magnesium content in the liquid solution are crucial parameters in controlling the magnesium mole fraction of the samples.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Energy & Fuels
Yavuz Kocak, Abdullah Yildiz
Summary: Utilizing carminic acid as a photosensitizer in dye-sensitized solar cells showed promising results in terms of light absorption and surface anchoring, but the suppression of electron recombination was found to be inadequate. Quantum chemical calculations confirmed the compatibility of carminic acid with the conduction band edge of TiO2, leading to improved photo-conversion efficiency compared to natural dye-based DSSCs under simulated solar light.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Materials Science, Multidisciplinary
Kenan Ozel, Abdullah Yildiz
Summary: The author proposed a novel design scheme by integrating a nanostructured SnO2 layer into the n-SnO2/p-Si heterojunction, resulting in devices with high photoresponsivity, quantum efficiency, and detectivity. These PDs possess self-powered characteristics and exhibit high performance for 311 nm wavelength without any power supply.
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Abdullah Atilgan, Ahmet Yigit Kurtulus, Mehmet Fatih Oktem, Abdullah Yildiz
Summary: A simple method was employed to synthesize undoped and W-doped ZnO nanostructures, with temperature strongly affecting the structural, optical, and electrical properties of the films. Undoped NSs showed better performance based on transparency and sheet resistance values, and W-doped ZnO was found to be a promising transparent conducting oxide for various applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Kenan Ozel, Abdullah Yildiz
Summary: This study introduces a p-n heterojunction photodetector based on metal oxide materials, demonstrating efficient detection of UV-B light with high detectivity, responsivity, and UV/visible rejection ratio.
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Physical
Polat Narin, Ece Kutlu-Narin, Gokhan Atmaca, Beyza Sarikavak-Lisesivdin, Sefer B. Lisesivdin, Ekmel Ozbay
Summary: Metal-organic chemical vapor deposition (MOCVD) is a high-quality growth method for GaN-based materials. In this study, InAlN/GaN and AlN/GaN heterostructures were grown using MOCVD, and their structural and surface properties were characterized using X-ray diffraction and atomic force microscopy measurements.
SURFACE AND INTERFACE ANALYSIS
(2022)
Article
Chemistry, Multidisciplinary
Elmar B. Asgerov, Anatoly I. Beskrovnyy, Nelya V. Doroshkevich, Carmen Mita, Diana M. Mardare, Dan Chicea, Mihaela D. Lazar, Alisa A. Tatarinova, Sergiy I. Lyubchyk, Svitlana B. Lyubchyk, Andriy I. Lyubchyk, Alexander S. Doroshkevich
Summary: This study aimed to investigate the impact of mechanical stress induced by water molecule adsorption on the composition of crystalline phases in ZrO2 + 3 mol% Y2O3 nanoparticles. Three methods, neutron diffraction, Raman microspectroscopic scanning, and X-ray diffraction, were used to determine the phase transition. The study revealed the reversible phase-structural β -> α transformation and the presence of two different structural modifications in the nanoparticles under normal physical conditions. The findings suggested a possible connection between the physical mechanism of transformation and the electronic exchange between the surface layer material and the adsorption layer. Furthermore, the study demonstrated the potential of direct-acting hydroelectric converters based on nanoscale YSZ systems due to the reversible nature of the observed effect.
Article
Materials Science, Multidisciplinary
Sefer Bora Lisesivdin, Beyza Sarikavak-Lisesivdin
Summary: GPAW is a DFT code based on the PAW method, written in Python, and has high integration and interoperability with ASE software and Python language. gpaw-tools scripts are free cross-platform Python scripts that provide a user interface for end-users without the need for Python language knowledge.
COMPUTATIONAL MATERIALS SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Betul Sekertekin, Kenan Ozel, Abdullah Atilgan, Abdullah Yildiz
Summary: In this paper, a UV photodiode based on TiO2 nanorods has been successfully fabricated, showing superior UV detection capability. The presented fabrication approach can also be applied to other metal-oxide semiconductor optoelectronic devices.
Article
Chemistry, Multidisciplinary
Alexander S. Doroshkevich, Andriy Lyubchyk, Boris L. Oksengendler, Tatyana Yu Zelenyak, Nurbol O. Appazov, Andriy K. Kirillov, Tatyana A. Vasilenko, Alisa A. Tatarinova, Oksana O. Gorban, Viktor Bodnarchuk, Nadejda N. Nikiforova, Maria Balasoiu, Diana M. Mardare, Carmen Mita, Dorin Luca, Matlab N. Mirzayev, Asif A. Nabiyev, Evgeni P. Popov, Anca Stanculescu, Tatyana E. Konstantinova, Yulia Aleksiayenak
Summary: The dimensional effect of electric charge storage was determined for the hydrated ZrO2-nanoparticles system, with a density of up to 270 mu F/g. The study found that the localization of charge carriers occurs at the generalized heterophase boundary-nanoparticles surface. The mechanism of this effect involves the formation of localized electronic states in the nanoparticle material due to donor-acceptor interaction with the adsorption ionic atmosphere. This research is significant for modern nanoelectronics, microsystem technology, and printed electronics.
Article
Optics
Polat Narin, Ece Kutlu-Narin, Senem Kayral, Remziye Tulek, Sibel Gokden, Ali Teke, Sefer Bora Lisesivdin
Summary: This study investigates the effects of growth temperatures, post-growth treatment, and substrate cleaning recipes on the properties of ZnO nanostructures grown using the mist Chemical Vapor Deposition method. The results show that the growth temperature and post-growth treatment strongly influence the structural, morphological, and luminescence properties of the ZnO nanostructures.
JOURNAL OF LUMINESCENCE
(2022)
Article
Physics, Condensed Matter
Gulden Yildiz Senguler, Ece Kutlu Narin, Sefer Bora Lisesivdin, Tulay Serin
Summary: In this study, Cu2CoSnS4 (CCTS) films were grown using the sol-gel method and the effect of thiourea concentration on film properties was investigated. The results showed that increasing thiourea concentration affected the structure, optical, morphological, and electrical properties of the films.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Multidisciplinary
P. Narin, J. M. All Abbas, E. Kutlu-Narin, S. B. Lisesivdin, E. Ozbay
Summary: Monolayer Indium Selenide (ML-InSe) was studied for its 4x4 supercell structure using ab initio calculations. The electronic and optical properties of ML-InSe were calculated for both pristine and substitutionally doped ML-InSe with Pd, Pt, Ag, and Au atoms. Substitutional doping was found to induce a spin-dependent electronic structure in ML-InSe, with flat energy bands near the Fermi level when doping elements were placed in In site. The PDOS calculations revealed the formation of flat bands of d orbitals of some noble metal atoms. The energetically favorable position for doping atoms was determined to be the Pt-In substitution atom based on formation energy calculations. Bond length, static dielectric constant (epsilon(0)), refractive index, and energy band gap were calculated for each studied structure. In the ML-InSe structure with Au-Se, epsilon(0) reached approximately 8.15. Substitutional doping was also found to induce peaks in the lower energy region of the imaginary part of the dielectric function, which may have significance for the optoelectronic properties of ML-InSe.
COMPUTATIONAL MATERIALS SCIENCE
(2023)
Article
Physics, Condensed Matter
Tugce Han, Ece Kutlu-Narin, Polat Narin, Beyza Sarikavak-Lisesivdin, Sefer Bora Lisesivdin
Summary: This study investigates the effect of changing the acetic acid (AA) ratio in the precursor solution on the growth and physical properties of MgZnO structures. The results show that the (0002) diffraction peak is dominant in MgZnO grown with 25% and 50% AA ratio. The surface density of growing MgZnO decreases with an increased AA ratio. The optical properties, including absorbance, transmittance, and band gap, have been examined for MgZnO samples with different AA ratios.
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)
