Journal of Non-crystalline Solids最新文献_第6页

Towards stable metal organic-inorganic complex glasses 迈向稳定的金属有机-无机复合玻璃

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-22 DOI: 10.1016/j.jnoncrysol.2025.123923

Tianzhao Xu , Zhencai Li , Kai Zheng , Hanmeng Zhang , Kenji Shinozaki , Huotian Zhang , Lars R. Jensen , Feng Gao , Jinjun Ren , Yanfei Zhang , Yuanzheng Yue

{"title":"Towards stable metal organic-inorganic complex glasses","authors":"Tianzhao Xu , Zhencai Li , Kai Zheng , Hanmeng Zhang , Kenji Shinozaki , Huotian Zhang , Lars R. Jensen , Feng Gao , Jinjun Ren , Yanfei Zhang , Yuanzheng Yue","doi":"10.1016/j.jnoncrysol.2025.123923","DOIUrl":"10.1016/j.jnoncrysol.2025.123923","url":null,"abstract":"<div><div>Metal organic-inorganic complex (MOIC) glasses have emerged as a new family of hybrid glasses. However, the low thermal stability of MOIC glasses fabricated via crystallization suppression constrains their practical applicability under ambient conditions. Here, we report a novel approach for preparing the MOIC glasses that combines slow-solvent removal with subsequent quenching to avoid gel thermal decomposition and enhance the thermal stability of the obtained glass. Specifically, the new approach utilizes an aprotic solvent (acetone) to kinetically prevent the ordering of the metal-ligand complex molecules in solution, thereby suppressing crystallization and forming a gel. The subsequent gradual drying process leads to the removal of the solvent to enhance the connections between molecules through hydrogen bonds, thus causing the formation of a hydrogen-bonded network. The increased network connectivity lowers the mobility of the molecules, thereby enhancing the thermal stability of the system. A disordered network of dried gel is frozen-in via cooling from 130 °C to room temperature, and hence, MOIC glass forms. Structural analyses reveal that hydrogen bonds are responsible for connecting the tetrahedral units. The as-prepared MOIC glass exhibits an increase in glass transition temperature (<em>T</em><sub>g</sub>) during rapid room-temperature relaxation, enhanced CO<sub>2</sub> uptake, and a red shift in photoluminescence. This work not only presents a novel strategy for fabricating large-sized, stable, functional MOIC glasses but also uncovers the critical role of hydrogen bonds in MOIC glass formation.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123923"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Structural and compositional evolution of silicon–aluminum smelting fly ash during acid leaching and characteristics of the resulting amorphous silica 酸浸过程中硅铝冶炼飞灰的结构、成分演变及非晶态二氧化硅的特性

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-30 DOI: 10.1016/j.jnoncrysol.2025.123935

Jilun Wei , Tong Zheng , Hanjing Luo , Xinglei Gao , You Xu , Shaonan Xu , Weidong Ai , Nan Li

{"title":"Structural and compositional evolution of silicon–aluminum smelting fly ash during acid leaching and characteristics of the resulting amorphous silica","authors":"Jilun Wei , Tong Zheng , Hanjing Luo , Xinglei Gao , You Xu , Shaonan Xu , Weidong Ai , Nan Li","doi":"10.1016/j.jnoncrysol.2025.123935","DOIUrl":"10.1016/j.jnoncrysol.2025.123935","url":null,"abstract":"<div><div>Over 15 million tons of high-alumina coal gangue are generated annually in Ordos, Inner Mongolia. The “carbothermic reduction–iron separation” process developed by Jilin University can convert about 6 million tons of this waste each year, but simultaneously produces large amounts of amorphous silicon–aluminum smelting fly ash, a by-product that has remained almost entirely unstudied and unused.</div><div>This work presents the first systematic investigation of this fly ash and proposes an efficient acid-leaching route aimed not only at impurity removal but also at the functional reuse of the leaching residue as a value-added material. Specifically, the acid-leaching process simultaneously enables selective dissolution of undesired components and <em>in situ</em> transformation of the residue into high–surface-area mesoporous silica (SF-A), thereby establishing a clear valorization pathway rather than a simple extraction process. Optimized HCl leaching selectively removes Al, Na, and S species and induces the in-situ formation of a Si-rich amorphous framework. The resulting SF-A exhibits a BET surface area of 607.2 m<sup>2</sup> g<sup>−1</sup>, a pore volume of 0.507 cm<sup>3</sup> g<sup>−1</sup>, and excellent thermal stability up to 600 °C. It also shows a methylene-blue adsorption capacity of 75.9 mg g<sup>−1</sup>, with kinetic analysis indicating that the adsorption process is predominantly governed by diffusion-controlled physical adsorption on the porous silica framework, showing competitive adsorption performance compared with common waste-derived adsorbents.</div><div>This method provides a sustainable pathway for the high-value utilization of silicon–aluminum smelting fly ash and yields thermally stable mesoporous silica suitable for adsorption-oriented utilization.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123935"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Electron-beam-induced reversible crystalline–amorphous phase switching in silicon: A unified beam-heating perspective 电子束诱导可逆硅晶-非晶相开关：统一的束加热视角

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-17 DOI: 10.1016/j.jnoncrysol.2025.123920

Sung Bo Lee , Jaehun Kim , Jeongin Paeng , Sung-Gyu Kang , Jihye Kwon , Chi Won Ahn , Hyoung Seop Kim

{"title":"Electron-beam-induced reversible crystalline–amorphous phase switching in silicon: A unified beam-heating perspective","authors":"Sung Bo Lee , Jaehun Kim , Jeongin Paeng , Sung-Gyu Kang , Jihye Kwon , Chi Won Ahn , Hyoung Seop Kim","doi":"10.1016/j.jnoncrysol.2025.123920","DOIUrl":"10.1016/j.jnoncrysol.2025.123920","url":null,"abstract":"<div><div>Prior studies have independently reported electron-beam-induced crystallization of amorphous silicon (<em>a</em>-Si) and amorphization of crystalline silicon (<em>c</em>-Si), yet a unified explanation for these opposing transitions remains elusive. Conventional models invoke knock-on atomic displacement or bond breaking via electronic excitation, though it is counterintuitive that both could arise from the same athermal mechanisms. Using in situ transmission electron microscopy, we present the first direct observation of reversible phase switching—from <em>a</em>-Si to <em>c</em>-Si and back—under constant irradiation. These findings challenge prevailing assumptions, suggesting distinct driving forces. To assess the possible contribution of beam heating to the driving forces, we employed a combination of Monte Carlo simulations and finite element analysis, incorporating Auger excitation as a plausible heating mechanism. The results reveal that heat accumulation becomes increasingly pronounced as thermal conductivity decreases from <em>c</em>-Si to <em>a</em>-Si. This trend suggests that crystallization in <em>a</em>-Si is driven by beam-induced heating, whereas amorphization in <em>c</em>-Si is primarily governed by knock-on atomic displacements. This study establishes a coherent framework for understanding electron–matter interactions and enables phase control in amorphous materials at the nanoscale.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123920"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798111","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Incorporation mechanisms of niobium into lithium borate glasses: Insights from solid state nuclear magnetic resonance and Raman spectroscopy 铌在硼酸锂玻璃中的掺入机制：来自固态核磁共振和拉曼光谱的见解

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-30 DOI: 10.1016/j.jnoncrysol.2025.123912

Rafaella Bartz Pena , Henrik Bradtmüller , Laureano Ensuncho , Marcos De Oliveira Jr. , Hellmut Eckert

{"title":"Incorporation mechanisms of niobium into lithium borate glasses: Insights from solid state nuclear magnetic resonance and Raman spectroscopy","authors":"Rafaella Bartz Pena , Henrik Bradtmüller , Laureano Ensuncho , Marcos De Oliveira Jr. , Hellmut Eckert","doi":"10.1016/j.jnoncrysol.2025.123912","DOIUrl":"10.1016/j.jnoncrysol.2025.123912","url":null,"abstract":"<div><div>The scientific and technological interest in niobium-bearing materials has significantly increased in recent years. Still, reports on the structural details about the short- and medium-range order of the intermediate oxide Nb<sub>2</sub>O<sub>5</sub> in glasses are quite scarce. In this work, the structural mechanisms underlying the incorporation of niobium oxide into lithium metaborate glass spanning concentrations up to ∼25 mol % are investigated through standard and advanced solid-state nuclear magnetic resonance and Raman spectroscopies. The commonly encountered NbO<sub>6</sub> distorted octahedral coordination occurs across the entire range of concentrations. With increasing niobia content, systematic changes in the speciation of the three-coordinated boron units are observed, revealing a progressive increase in the concentration of <span><math><mrow><mi>B</mi><msub><mi>O</mi><mrow><mn>3</mn><mo>/</mo><mn>2</mn></mrow></msub></mrow></math></span> trigonal sites at the expense of anionic <span><math><mrow><mi>B</mi><msub><mi>O</mi><mrow><mn>2</mn><mo>/</mo><mn>2</mn></mrow></msub><msup><mrow><mi>O</mi></mrow><mo>−</mo></msup></mrow></math></span> groups. Furthermore, heteronuclear dipolar <sup>7</sup>Li–<sup>93</sup>Nb, and unprecedented <sup>11</sup>B<sup>(III)</sup>–<sup>93</sup>Nb and <sup>11</sup>B<sup>(IV)</sup>–<sup>93</sup>Nb recoupling experiments reveal an increase in all of the dipolar interaction strengths, reflecting the formation of B-O-Nb connectivities with increasing Nb<sub>2</sub>O<sub>5</sub> content.. Above 10 mol % Nb<sub>2</sub>O<sub>5</sub>, the Raman spectra suggest the onset of niobium-oxide clustering. Altogether, these results suggest that niobium acts as a network former in alkali borate glasses, which is in consonance with the structural role reported for Nb<sub>2</sub>O<sub>5</sub> in alkali silicate and phosphate glasses.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123912"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880769","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effects of CuO and β-eucyptite on the structure, properties and fracture mechanism of a low-melting glass for vacuum glazing CuO和β-绿柱石对真空上釉低熔玻璃结构、性能和断裂机理的影响

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-03 DOI: 10.1016/j.jnoncrysol.2025.123890

Weiwei Wang , Hui Yan , Xin Cao , Jiwen Jiang , Junfei Liu , Shou Peng

{"title":"Effects of CuO and β-eucyptite on the structure, properties and fracture mechanism of a low-melting glass for vacuum glazing","authors":"Weiwei Wang , Hui Yan , Xin Cao , Jiwen Jiang , Junfei Liu , Shou Peng","doi":"10.1016/j.jnoncrysol.2025.123890","DOIUrl":"10.1016/j.jnoncrysol.2025.123890","url":null,"abstract":"<div><div>In this study, a series of novel lead-free Bi<sub>2</sub>O<sub>3</sub>–B<sub>2</sub>O<sub>3</sub>–ZnO–BaO–CuO low-melting glasses with varying content of CuO were prepared, and these matrix glass powder were then used to form composite glass with varying additions of β-eucryptite. The effects of the content of CuO and β-eucryptite on the structure, thermal properties, sealing performance and microstructure of the low-melting glasses were investigated. Structural analysis indicates that the glasses were composed of [BiO<sub>3</sub>], [BiO<sub>6</sub>], [BO<sub>3</sub>] and [BO<sub>4</sub>] basic units, and the amounts of [BiO<sub>3</sub>] and [BiO<sub>6</sub>] units decreased with increasing content of CuO, while the transformation of [BO<sub>4</sub>] to [BO<sub>3</sub>] led to a gradual increase in the amount of [BO<sub>3</sub>], which loosened the glass structure. The coefficient of thermal expansion (CTE) of the glasses gradually increased, while the characteristic temperature (T<sub>g</sub> and T<sub>d</sub>) and sealing temperature showed the opposite trend. The results also indicated that the CTE of the composite glasses decreased significantly with an increase in the external addition of β-eucryptite, and the sealing temperature did not increase substantially. Optimal comprehensive performance was observed at a β-eucryptite content of 6 %, resulting in a lower CTE of 87 × 10<sup>–7</sup> / °C and sealing temperature of 415 °C. Following sealing, the factors affecting the sealing strength and fracture mechanism of the sealing glasses were examined. The composite glasses are well-suitable as sealing materials for vacuum glazing, meeting the requirements for low-melting sealing glass and exhibiting a favorable market prospect.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123890"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145651844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

KH550, KH560, and KH570 modified SiO2 enhance the moisture resistance, thermal properties and electrical insulation properties of epoxy resin: Based on experiments and molecular dynamics simulations KH550、KH560、KH570改性SiO2提高环氧树脂的耐湿性、热性能和电绝缘性能：基于实验和分子动力学模拟

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-19 DOI: 10.1016/j.jnoncrysol.2025.123922

Han Zeng, Maoqiang Bi, Zhonghe Tong, Yingtai Du, Xi Chen, Tianyan Jiang

{"title":"KH550, KH560, and KH570 modified SiO2 enhance the moisture resistance, thermal properties and electrical insulation properties of epoxy resin: Based on experiments and molecular dynamics simulations","authors":"Han Zeng, Maoqiang Bi, Zhonghe Tong, Yingtai Du, Xi Chen, Tianyan Jiang","doi":"10.1016/j.jnoncrysol.2025.123922","DOIUrl":"10.1016/j.jnoncrysol.2025.123922","url":null,"abstract":"<div><div>In this study, the enhancement mechanism of SiO<sub>2</sub> modified by different silane coupling agents (SCA) on the moisture resistance, thermal properties and electrical insulation properties of epoxy resin (EP) composites is discussed. Through the combination of experimental tests and molecular dynamics (MD) simulations, the performance differences of five systems (EP, SiO<sub>2</sub>-EP, KH550 / SiO<sub>2</sub>-EP, KH560 / SiO<sub>2</sub>-EP, KH570 / SiO<sub>2</sub>-EP) in water absorption, glass transition temperature (<em>T</em><sub>g</sub>) and volume resistivity are analyzed. The changes of free volume fraction (FFV), interaction energy, number of hydrogen bonds and diffusion behavior of water molecules are revealed from the microscopic point of view. The experimental results show that the introduction of modified SiO<sub>2</sub> significantly improves the moisture resistance, thermal properties and electrical properties of EP. Among them, KH550 modified SiO<sub>2</sub> has the best effect, <em>T</em><sub>g</sub> increases by 12.3 %, volume resistivity increases by 22.1 %, and water absorption rate decreases by 21.9 % at 60 °C. MD simulations further confirm that the nano-SiO<sub>2</sub> modified by SCA can effectively limit the diffusion of water molecules and reduce the effect of temperature on the mean square displacement (MSD) of the system. The KH550 / SiO<sub>2</sub>-EP system has the smallest free volume and the highest number of hydrogen bonds, which effectively inhibits the diffusion of water molecules and the movement of molecular chains. This study provides a theoretical basis and material design strategy for the application of epoxy composites in hygrothermal environments.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123922"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798063","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Eu2+-doped fluorochlorosilicate transparent spectral conversion glass 掺Eu2+氟氯硅酸盐透明光谱转换玻璃

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-11 DOI: 10.1016/j.jnoncrysol.2025.123913

Changjian Wang , Yujie Liu , Xingze Chen , Xianping Fan , Xvsheng Qiao , Qun Luo , Hai Guo

引用次数: 0

Effect of B2O3 on the structure and properties of low-dielectric boron aluminosilicate glass used for glass fibers B2O3对玻璃纤维用低介电硼铝硅酸盐玻璃结构和性能的影响

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-10 DOI: 10.1016/j.jnoncrysol.2025.123916

Yue Mi , Cong Ao , Qingyang Shen , Zhehui Sun , Qinghuang Zhang , Binchang Zhang , Lixiong Han , Jun Xie , Dehua Xiong

{"title":"Effect of B2O3 on the structure and properties of low-dielectric boron aluminosilicate glass used for glass fibers","authors":"Yue Mi , Cong Ao , Qingyang Shen , Zhehui Sun , Qinghuang Zhang , Binchang Zhang , Lixiong Han , Jun Xie , Dehua Xiong","doi":"10.1016/j.jnoncrysol.2025.123916","DOIUrl":"10.1016/j.jnoncrysol.2025.123916","url":null,"abstract":"<div><div>This study investigated the effects of the Mg/B mass ratio on the structure, high-temperature rheological behavior, and dielectric properties of MgO-Al<sub>2</sub>O<sub>3</sub>-B<sub>2</sub>O<sub>3</sub>-SiO<sub>2</sub> based boron aluminosilicate glass. The results indicated that after the substitution of B<sub>2</sub>O<sub>3</sub> for MgO, the contents of both [BO<sub>3</sub>] and [BO<sub>4</sub>] units increased; however, the dominant coordination gradually shifted from [BO<sub>4</sub>] to [BO<sub>3</sub>]. Notably, variations in the Mg/B ratio significantly altered the coordination environment of Al<sup>3+</sup>, leading to an increase in the content of [AlO<sub>5</sub>] units from 28.80 % to 45.11 %. These structural changes resulted in an increased degree of polymerization but a weakened network rigidity. Consequently, the coefficient of thermal expansion (CTE), glass transition temperature (T<sub>g</sub>), flexural strength, dielectric constant, and dielectric loss were all reduced. At an optimized Mg/B mass ratio of 0.12, the glass sample exhibited a favorable combination of dielectric properties (dielectric constant = 4.48 @10 GHz, dielectric loss = 2.0 × 10<sup>–3</sup> @10 GHz) and a low fiber drawing temperature (1301 °C), which is suitable for the production of glass fibers.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123916"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749076","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Effect of oxygen on the glass forming ability, mechanical properties and corrosion resistance of Mo-based bulk metallic glass 氧对钼基大块金属玻璃的玻璃成形能力、力学性能和耐腐蚀性能的影响

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-07 DOI: 10.1016/j.jnoncrysol.2025.123904

Tao Li , Chen Su , Pengcheng Zhang , Siming Xiao , Yifan Ruan , Shengfeng Guo

{"title":"Effect of oxygen on the glass forming ability, mechanical properties and corrosion resistance of Mo-based bulk metallic glass","authors":"Tao Li , Chen Su , Pengcheng Zhang , Siming Xiao , Yifan Ruan , Shengfeng Guo","doi":"10.1016/j.jnoncrysol.2025.123904","DOIUrl":"10.1016/j.jnoncrysol.2025.123904","url":null,"abstract":"<div><div>MoCoB bulk metallic glass (BMG) exhibits very high thermal stability and outstanding mechanical properties. However, their wide applications are still limited due to the poor glass forming ability (GFA) and critical preparing conditions, particularly the need for low oxygen content. This study systematically investigated the effects of oxygen on the properties of MoCoB BMG. A small amount of oxygen incorporation (≤1064 ppm) significantly enhanced the GFA, increasing the critical diameter from 1.2 mm to 2 mm, due to a reduced thermodynamic driving force for crystallization. Moreover, the addition of 676 ppm oxygen simultaneously improves the mechanical properties of MoCoB BMG with the microhardness of 1347 HV, compressive strength of above 5000 MPa, nanohardness of 19 GPa, and Young's modulus of 300 GPa through strengthening local chemical bonds by the addition of oxygen. The high-oxygen-content specimens (2111 ppm) show exceptional corrosion resistance with a self-corrosion current density of 1.259 × 10<sup>–7</sup>A/cm<sup>2</sup> in 3.5 wt. % NaCl solution. This can be attributed to the formation of a denser CoMoO<sub>4</sub> composite oxide layer and suppression of passive film dissolution. These findings could provide a comprehensive understanding of the effects of oxygen on the BMGs, and help with the development of high-performance and cost-effective Mo-based BMGs.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123904"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749078","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Correlation between magnetic analyses and optical properties of divalent Co ion in boro-tellurite glass with erbium lanthanide 镧系铒硼碲玻璃中二价钴离子的磁性分析与光学性质的相关性

IF 3.5 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2026-02-01 Epub Date: 2025-12-26 DOI: 10.1016/j.jnoncrysol.2025.123925

Nur Liyana Amiar Rodin , S.N. Syed Yaacob , N.A.M. Jan , Faiz Hashim , Siti Maisarah Aziz , R. Zainal , M.R. Sahar

{"title":"Correlation between magnetic analyses and optical properties of divalent Co ion in boro-tellurite glass with erbium lanthanide","authors":"Nur Liyana Amiar Rodin , S.N. Syed Yaacob , N.A.M. Jan , Faiz Hashim , Siti Maisarah Aziz , R. Zainal , M.R. Sahar","doi":"10.1016/j.jnoncrysol.2025.123925","DOIUrl":"10.1016/j.jnoncrysol.2025.123925","url":null,"abstract":"<div><div>This study investigates the optical and magnetic properties of Er³⁺-doped boro-tellurite glasses containing varying amounts of cobalt oxide nanoparticles (Co₃O₄ NPs). Glass samples with different Co₃O₄ concentrations (0.0–0.8 mol %) were prepared using the melt-quenching method. X-ray diffraction and HRTEM confirmed their amorphous structure, with lattice spacing matching the (422) plane of pure Co₃O₄. Magnetic analysis from VSM showed mainly paramagnetic behavior with slight ferromagnetic traces due to Co²⁺/³⁺ ions. EPR analysis indicated Co²⁺ ions in octahedral sites, showing strong superexchange interactions and high spin-orbit coupling. Adding Co₃O₄ NPs altered the electron distribution, increasing the optical bandgap and suggesting more tetrahedral Co²⁺ integration into the glass network. Up-conversion spectra revealed only two emission peaks (653 nm and 822 nm), with reduced luminescence at 538 nm and 554 nm. This quenching is attributed to intersystem crossing (ISC) of Co²⁺ ions in octahedral coordination, affecting the Er³⁺ emission behavior.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123925"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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