Bulletin of Materials Science最新文献_第6页

Texture evolution and mechanical anisotropy of Inconel 718 fabricated by cold metal transfer-based wire arc additive manufacturing 冷金属转移电弧增材制造Inconel 718的织构演化与力学各向异性

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-22 DOI: 10.1007/s12034-026-03710-8

Navaneethasanthakumar Subramaniam, Krishnaveni Anbalagan, Jebakani Devaraj, Santhosh Velmurugan

{"title":"Texture evolution and mechanical anisotropy of Inconel 718 fabricated by cold metal transfer-based wire arc additive manufacturing","authors":"Navaneethasanthakumar Subramaniam, Krishnaveni Anbalagan, Jebakani Devaraj, Santhosh Velmurugan","doi":"10.1007/s12034-026-03710-8","DOIUrl":"10.1007/s12034-026-03710-8","url":null,"abstract":"<div>This study provides a novel, multi-technique correlation between process-induced crystallographic texture and directional mechanical properties in Wire arc additive manufacturing (WAAM) of Inconel 718. Walls were fabricated using Cold metal transfer (CMT). The evolution of the <001> fibre texture and its influence on mechanical anisotropy were quantitatively investigated using electron backscatter diffraction (EBSD) and atomic force microscopy (AFM). The additively built walls exhibited a strong <001> fibre texture along the build direction, with a clear transition from columnar to equiaxed grains in the upper layers. For the first time in CMT-WAAM Inconel 718, AFM was rigorously cross-correlated with EBSD maps, revealing that strongly textured columnar zones exhibited significantly lower surface roughness (Rq = 55 ± 4 nm) than equiaxed regions (Rq = 90 ± 6 nm), directly linking topography to underlying crystallography. Directional microhardness mapping and tensile testing revealed pronounced anisotropy; vertical specimens exhibited the highest hardness (284 ± 4 HV0.2) and ultimate tensile strength (UTS: 988 ± 7 MPa) due to the <001> texture hindering dislocation slip, while horizontal specimens showed the highest ductility (16.4 ± 0.7% elongation). These results demonstrate that the mechanical properties of CMT-WAAM Inconel 718 are intrinsically dictated by process-induced texture and highlight the necessity of orientation-aware process design for advanced superalloy applications.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optimization of anodization time for enhanced morphology, adhesion, and tribological behavior of TiO2 nanotube layers on Ti−6Al–4V alloy 优化阳极氧化时间对Ti−6Al-4V合金表面TiO2纳米管层形貌、附着力和摩擦学性能的影响

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-22 DOI: 10.1007/s12034-026-03744-y

Jaber Ghozlani, Hafedh Dhiflaoui, Halima Benghanoum, Anouar Hajjaji, Lotfi Khezami, Ali Krech, Bernabé Mari Soucase, Mohamed Ali Terres

{"title":"Optimization of anodization time for enhanced morphology, adhesion, and tribological behavior of TiO2 nanotube layers on Ti−6Al–4V alloy","authors":"Jaber Ghozlani, Hafedh Dhiflaoui, Halima Benghanoum, Anouar Hajjaji, Lotfi Khezami, Ali Krech, Bernabé Mari Soucase, Mohamed Ali Terres","doi":"10.1007/s12034-026-03744-y","DOIUrl":"10.1007/s12034-026-03744-y","url":null,"abstract":"<div>This study investigates the effect of anodization time on the morphology, crystalline structure, mechanical properties, coating adhesion, wettability, and tribological performance of TiO2 nanotube (NT) layers electrochemically grown on Ti−6Al–4V alloy at a constant anodization voltage of 60 V. Anodization times ranging from 30 to 120 min were examined to identify the optimum processing conditions. The NT layers exhibited a time-dependent evolution, changing from irregular and discontinuous morphologies at shorter anodization times to highly ordered, compact, and vertically aligned nanotube arrays after 50 min, as revealed by field-emission scanning electron microscopy (FESEM). Prolonged anodization (≥70 min) promoted excessive fluoride-assisted chemical dissolution, resulting in porous nanograss-like morphologies. X-ray diffraction (XRD) analysis showed a progressive increase in crystallinity and anatase phase content, reaching approximately 55 wt.% after 120 min of anodization. Among all the investigated conditions, the coating anodized for 50 min exhibited the best overall mechanical performance, characterized by superior coating adhesion (Lc1 ≈ 2.20 N, Lc2 ≈ 4.36 N, Lc3 ≈ 5.72 N), high scratch hardness (HSp ≈ 6.88 GPa), and a favorable balance between elastic and plastic deformation. Tribological testing further confirmed the superior performance of this coating, which exhibited the lowest wear volume (≈4.75 × 10–3 mm3 under a 1 N load) and a significantly reduced coefficient of friction. These findings demonstrate that the optimum tribo-mechanical performance is achieved through a balance among anatase crystallinity, nanotube ordering, coating adhesion, and morphological stability.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

First-principles and ab initio molecular dynamics study of T91 steel/PbBi alloy interfaces: Stability, bonding strength and atomic diffusion mechanisms T91钢/PbBi合金界面的第一性原理和从头算分子动力学研究：稳定性、键合强度和原子扩散机制

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-22 DOI: 10.1007/s12034-026-03740-2

Yuchuan Jiang, Chaoyue Zhao, Yunyun Li, Renyu Liang, Jiayin Li, Bowen Ma, Lu Guo, Suoqing Yu, Dongdong Li

{"title":"First-principles and ab initio molecular dynamics study of T91 steel/PbBi alloy interfaces: Stability, bonding strength and atomic diffusion mechanisms","authors":"Yuchuan Jiang, Chaoyue Zhao, Yunyun Li, Renyu Liang, Jiayin Li, Bowen Ma, Lu Guo, Suoqing Yu, Dongdong Li","doi":"10.1007/s12034-026-03740-2","DOIUrl":"10.1007/s12034-026-03740-2","url":null,"abstract":"<div>First-principles calculations were performed to investigate the interfacial characteristics of T91 steel in contact with lead–bismuth eutectic (LBE). Supercell models of T91 steel and the Pb–Bi alloy, together with their corresponding surface models, were systematically constructed. The calculated lattice constants of T91 steel and the Pb–Bi alloy agree well with the available experimental values, confirming the reliability of the computational models. Based on the optimized structures, several possible T91/Pb–Bi interface configurations were evaluated by calculating their interfacial energies and work of adhesion, enabling the identification of the thermodynamically most stable and strongly bonded interface. Furthermore, ab initio molecular dynamics simulations were performed to investigate the interfacial contact characteristics and the diffusion behavior of atoms near the T91/Pb–Bi interface. Electronic structure analyses were subsequently carried out to elucidate the underlying interfacial bonding mechanism. The calculated results are consistent with previous experimental observations and theoretical studies, providing atomistic insights into the interfacial behavior of the T91 steel/Pb–Bi system.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Real-time morphological investigation of early growth of chemical-solution-deposited semiconducting PbS thin films by liquid-adapted atomic force microscopy 用适应液体的原子力显微镜对化学溶液沉积的半导体PbS薄膜早期生长的实时形态学研究

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-22 DOI: 10.1007/s12034-026-03692-7

Jorge A García-Valenzuela, Rafael Ramírez-Bon, Martha R Baez-Gaxiola, Reina V Quevedo-Robles, Francisco J Ochoa-Estrella, Melissa A Escalante-Bujanda, Marcos Cota-Leal

{"title":"Real-time morphological investigation of early growth of chemical-solution-deposited semiconducting PbS thin films by liquid-adapted atomic force microscopy","authors":"Jorge A García-Valenzuela, Rafael Ramírez-Bon, Martha R Baez-Gaxiola, Reina V Quevedo-Robles, Francisco J Ochoa-Estrella, Melissa A Escalante-Bujanda, Marcos Cota-Leal","doi":"10.1007/s12034-026-03692-7","DOIUrl":"10.1007/s12034-026-03692-7","url":null,"abstract":"<div>This paper presents a real-time investigation of the surface evolution of semiconducting PbS thin films during the first 120 min of chemical solution deposition at room temperature using liquid-adapted atomic force microscopy, with particular emphasis on the early stages of film growth. In liquid-adapted atomic force microscopy, both the cantilever tip and the sample are completely immersed in a liquid medium during measurement, enabling characterization of the films in their pristine state. The films were analyzed immediately after transfer from the reaction solution into distilled water within the microscope system, without prior air drying. This transfer effectively halted the deposition reaction, ensuring that the observed morphology accurately represented the actual characteristics of the PbS thin films at the selected deposition times. The results obtained using this approach revealed that the PbS thin films were composed of a primary base coating of square particles, whose morphological evolution and characteristics are described in detail. In addition, at least three distinct types of surface structures deposited on the primary base coating were identified: flake-like particles, mountain-like accumulations (mounds of crystals), and hexagonal particles. These structures, which are typically removed during standard mechanical cleaning procedures, are also characterized and discussed in detail. To complement the morphological observations, surface analyses of the dried PbS thin films were performed using X-ray photoelectron spectroscopy and X-ray diffraction. The results of these techniques provide additional insights into the composition and structural evolution of the films, thereby enhancing the interpretation of the morphological features observed by liquid-adapted atomic force microscopy.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Resistive switching memory devices based on a polyvinyl pyrrolidone/molybdenum sulphide composite prepared using the drop casting method 采用滴铸法制备的基于聚乙烯醇吡咯烷酮/硫化钼复合材料的电阻开关存储器件

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-22 DOI: 10.1007/s12034-026-03728-y

Z W Dlamini

{"title":"Resistive switching memory devices based on a polyvinyl pyrrolidone/molybdenum sulphide composite prepared using the drop casting method","authors":"Z W Dlamini","doi":"10.1007/s12034-026-03728-y","DOIUrl":"10.1007/s12034-026-03728-y","url":null,"abstract":"<div>Sustainable, solution-processable materials are increasingly sought for next-generation non-volatile memory technologies. In this work, an Ag/PVP–MoS2/ITO resistive switching device was fabricated using a simple, low-temperature drop-casting method. Electrical measurements revealed stable bipolar resistive switching behaviour with clearly distinguishable high- and low-resistance states, an ON/OFF ratio of approximately 2, and endurance exceeding (2times {10}^{4}) switching cycles and non-volatile data retention for at least 1200 s. Transport analysis indicates a bias-dependent transition from ohmic conduction associated with percolative MoS2 pathways embedded within the PVP matrix—to field activated regime dominated by trap-assisted charge transport beyond ~ 2.9 V. Although the switching window is modest, the device exhibits excellent cycling stability, underscoring the suitability of PVP–MoS2 composites for flexible and environmentally sustainable memory applications. This study provides new insight into bias-dependent transport mechanisms in polymer/TMD hybrid systems and contributes to the development of eco-friendly resistive memory technologies.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Heat-treatment-induced evolution of Al–Ni-enriched B2 regions and strength-ductility response in selective laser melted Al0.5CoCrFeNi high-entropy alloy 选择性激光熔化Al0.5CoCrFeNi高熵合金中al - ni富集B2区的演变及强度-塑性响应

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-22 DOI: 10.1007/s12034-026-03741-1

Yanao Gong, Yaqiong Ge, Zexin Chang, Yan Yin, Wen Yang

{"title":"Heat-treatment-induced evolution of Al–Ni-enriched B2 regions and strength-ductility response in selective laser melted Al0.5CoCrFeNi high-entropy alloy","authors":"Yanao Gong, Yaqiong Ge, Zexin Chang, Yan Yin, Wen Yang","doi":"10.1007/s12034-026-03741-1","DOIUrl":"10.1007/s12034-026-03741-1","url":null,"abstract":"<div>The inherent strength–ductility trade-off limits the structural application of high-entropy alloys (HEAs). In Al0.5CoCrFeNi, Al–Ni-enriched B2 regions play an important role in governing this balance, yet their thermal evolution remains insufficiently understood, particularly in alloys fabricated by selective laser melting (SLM). Here, we examined the annealing response (900–1100 °C) of Al–Ni-enriched B2 regions in selective-laser-melted Al0.5CoCrFeNi HEAs and correlated their morphological, dimensional, and fractional changes with the corresponding mechanical behaviour. With increasing annealing temperature, the Al–Ni-enriched B2 regions coarsened and became more rounded, with the average particle size increasing from 0.288 to 0.439 µm and the area fraction decreasing from 27.9% to 22.5%. These changes were accompanied by weakened particle-related strengthening and improved ductility. Under the present experimental conditions, the intermediate annealing condition at 1000°C, characterized by a moderate B2 particle size of 0.326 µm and a retained area fraction of 24.3%, was associated with a favorable strength–ductility balance. This work establishes a process–microstructure–property correlation for the post-heat-treatment evolution of B2 regions in SLM-processedAl0.5CoCrFeNi HEAs and provides a useful reference for microstructural regulation toward improved strength–ductility performance.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Density functional theory analysis of spin polarization and 4f-state magnetism in holmium doped MgZnO heterostructures via Fermi level modulation 费米能级调制下掺钬MgZnO异质结构自旋极化和4f态磁性的密度泛函理论分析

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-21 DOI: 10.1007/s12034-026-03699-0

K Mohammed Salman, Mohamed Zikriya, C G Renuka

引用次数: 0

Unlocking the potential of orange-red emission from engineered Y2WO6 phosphors with Sm3+ integration for solid-state lighting applications 释放集成Sm3+的Y2WO6荧光粉在固态照明应用中的橙红色发射潜力

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-21 DOI: 10.1007/s12034-026-03695-4

Akshay Arjun, H B Premkumar, H Nagabhushana, G P Darshan

{"title":"Unlocking the potential of orange-red emission from engineered Y2WO6 phosphors with Sm3+ integration for solid-state lighting applications","authors":"Akshay Arjun, H B Premkumar, H Nagabhushana, G P Darshan","doi":"10.1007/s12034-026-03695-4","DOIUrl":"10.1007/s12034-026-03695-4","url":null,"abstract":"<div>Over the past few decades, phosphor-converted light-emitting diodes (pc-LEDs) have undergone significant advancements, resulting in substantial energy reductions. Considering the merits, improving the functionalities of phosphors was an igniting topic of study for the research community. In this context, the present study focuses on the synthesis of a series of Y2–xSmxWO6 (x = 0.01–0.11) phosphors using a solution combustion (SC) method. X-ray diffraction (XRD) analysis of the prepared phosphors confirmed the monoclinic phase with the P2/c space group. Morphological studies revealed a rod-like morphology. Utilizing diffuse reflectance (DR) data, the energy bandgap (Eg) of the phosphors was estimated and found to be lie in the range of ~3.64–3.79 eV. Photoluminescence (PL) emission spectra exhibited three intense and sharp peaks at ~566, 604, and 656 nm, corresponding to the transitions from the 4G5/2 state of Sm3+ ions to 6HJ (J = 5/2, 7/2, and 9/2) lower energy multiplets, respectively. Notably, the prepared phosphors exhibited high color purity (~99.7%), with color coordinates in the orange-red region of the Commission Internationale de l'Éclairage (CIE) diagram. This distinctive orange-red emission property highlights its potential in solid-state lighting applications.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782846","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Electrochemical charge-storage behaviour of NdFeO3 perovskite as a cathode material for supercapacitor applications 作为超级电容器正极材料的NdFeO3钙钛矿的电化学电荷存储行为

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-21 DOI: 10.1007/s12034-026-03661-0

Nilesh Chougala, A S Patil, Basavaraj Angadi, Sudhindra Rayaprol, Sunil Patil, Panchakshari Swami, Shidaling Matteppanavar

{"title":"Electrochemical charge-storage behaviour of NdFeO3 perovskite as a cathode material for supercapacitor applications","authors":"Nilesh Chougala, A S Patil, Basavaraj Angadi, Sudhindra Rayaprol, Sunil Patil, Panchakshari Swami, Shidaling Matteppanavar","doi":"10.1007/s12034-026-03661-0","DOIUrl":"10.1007/s12034-026-03661-0","url":null,"abstract":"<div>NdFeO3 perovskites were prepared by using the ball milling solid-state reaction technique to investigate their structural, dielectrical, and electrochemical properties for energy storage and supercapacitor applications. X-ray diffraction studies confirm the formation of an orthorhombic structure with the Pnma space group, and a crystallite size of 65 nm was obtained from the Debye–Scherrer method. Furthermore, the Rietveld refinement technique provides deeper insights into the structure through the determination of lattice parameters and bond lengths. Investigation of the dielectric constant and loss tangent at room temperature as a function of frequency revealed the presence of Maxwell–Wagner type space charge polarization in the material. Electrochemical investigations were accomplished using the three-electrode arrangement with 1 M KOH solution as an electrolyte, which gives the pseudocapacitive nature and origin of redox peaks in cyclic voltammogram curves. NdFeO3 shows a specific capacitance of around 97.41 F g–1 at a current density of 1 A g–1 with energy density and power density of 4.55 Wh kg–1 and 290 W kg–1, respectively, and maintains 64% capacitance after 10,000 cycles. Electrochemical impedance spectroscopy provides series resistance, charge-transfer resistance, and Warburg diffusion, and also diffusion coefficients calculated using Randles’ equivalent circuit. The presence of mixed charge storage with 57% diffusion-controlled contribution at 10 mV s–1 scan rates, and reducing with increasing scan rate. Overall, NdFeO3 is a potential candidate for pseudocapacitive energy storage.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148783247","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical and structural attributes of magnesium oxide borate glass doped with TiO2 for photonic applications 二氧化钛掺杂硼酸镁玻璃在光子应用中的光学和结构特性

IF 2.1 4区材料科学

Bulletin of Materials Science Pub Date : 2026-08-21 DOI: 10.1007/s12034-026-03683-8

B Pruthviraja, B Eraiah, E G Jashmitha

{"title":"Optical and structural attributes of magnesium oxide borate glass doped with TiO2 for photonic applications","authors":"B Pruthviraja, B Eraiah, E G Jashmitha","doi":"10.1007/s12034-026-03683-8","DOIUrl":"10.1007/s12034-026-03683-8","url":null,"abstract":"<div>This study examines the impact of dopant TiO2, co-dopant MgO, and the physical properties of magnesium borate glasses. The fabrication of glass compositions was accomplished through the melt quenching technique, yielding formulations of xTiO2-(50−x)MgO-50B2O3, where x = 0, 1, 3, 5, 7, and 9 in mol%. The structural, optical, and dielectric properties of these glasses were systematically analyzed to elucidate the impact of varying magnesium ion concentrations. X-ray diffraction (XRD) analysis confirmed the amorphous nature of the glass system. Density measurements, conducted via the Archimedes method, revealed an increase with increasing TiO2 mol%, while the molar volume decreased, following theoretical expectations. Absorption spectra spanning 200 to 1000 nm were obtained using a UV–visible spectrometer. Tauc’s plot facilitated the determination of direct and indirect energy band gaps, revealing fluctuations in band gap energy with varying TiO2 mol%. The refractive index was derived from the energy band gap values. Additionally, Fourier-transform infrared (FTIR) spectroscopy, covering wave numbers from 400 to 4000 cm−1, was employed to characterize the functional groups present in the glasses.</div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"49 3","pages":""},"PeriodicalIF":2.1,"publicationDate":"2026-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148782845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0