Journal of Non-crystalline Solids最新文献

{"title":"The Network structure and viscoelastical-rheological properties of multicomponent aluminosilicate glass","authors":"Yuncheng Li ,&nbsp;Liangmao Jin ,&nbsp;Luyao Li ,&nbsp;Jing Wang ,&nbsp;Peijing Tian ,&nbsp;Xiaokun Tian ,&nbsp;Jianjun Han","doi":"10.1016/j.jnoncrysol.2025.123670","DOIUrl":"10.1016/j.jnoncrysol.2025.123670","url":null,"abstract":"<div><div>In this work, we investigate the structure and viscoelastic rheological properties of multicomponent aluminosilicate glasses with Al/(Si+Al) ratios ranging from 0.37 to 0.52. It is found that an increase in the Al/(Si+Al) ratio enhances the connectivity of the glass network, leading to the enhancement of glass transition temperature <em>T_g</em> (661.8–690.2 °C), softening temperature <em>T_d</em> (725.5–744.9 °C), and high-temperature viscous activation energy (<em>VAE</em>) (165.02–190.13 kJ/mol). With increasing Al/(Si+Al) ratio, the coefficient of thermal expansion (<em>CTE</em>) first decreases and then increases, reaching a minimum of 7.196 × 10^–6 1/K when the Al/(Si+Al) ratio is ∼0.45. Meanwhile, the fragility index (<em>m</em>) and operational temperature range reach the maximum and minimum values of 36.97 and 232.7 °C, respectively. Viscoelastic properties of glass show a strongly dependent on the Al/(Si+Al) ratios. At Al/(Si+Al) ratios of 0.37, 0.41, and 0.49, both the loss angle tan<em>θ</em> and relaxation time decrease and then increase, with values of 0.41, 0.34, and 3.17, and 0.0624, 0.0516, and 0.2014 s, respectively. The variations in the loss angle and relaxation time suggest that the network connectivity alone does not fully account for the viscoelastic properties of glass.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123670"},"PeriodicalIF":3.2,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144330390","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}

{"title":"Multi-objective optimization of Fe-based metallic glasses on magnetic property, thermal stability and glass forming ability","authors":"Runyu Mo,&nbsp;Peng Wang,&nbsp;Jingli Ren","doi":"10.1016/j.jnoncrysol.2025.123666","DOIUrl":"10.1016/j.jnoncrysol.2025.123666","url":null,"abstract":"<div><div>It is a great challenge to optimize the composition and improve the multi-properties of Fe-based metallic glasses (Fe-based MGs) by traditional trial-and-error method. Here, a strategy combining ensemble learning (EL) and non-dominated sorting genetic algorithm-III (NSGA-III) is proposed to efficiently design Fe-based MGs with simultaneous high magnetic property, thermal stability and glass-forming ability (GFA). With alloy compositions as the sole input, four EL models and three linear models are employed to predict saturated magnetic flux density (<span><math><msub><mrow><mi>B</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span>), onset crystallization temperature (<span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>x</mi></mrow></msub></math></span>) and maximum casting diameter (<span><math><msub><mrow><mi>D</mi></mrow><mrow><mi>max</mi></mrow></msub></math></span>) of Fe-based MGs, respectively. Particle swarm optimization (PSO) algorithm is introduced to optimize hyperparameters of the models. It is found that the PSO-CatBoost model and PSO-ET models with different hyperparameters can better predict <span><math><msub><mrow><mi>B</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span>, <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>x</mi></mrow></msub></math></span> and <span><math><msub><mrow><mi>D</mi></mrow><mrow><mi>max</mi></mrow></msub></math></span> with higher accuracy. Further, the effects of key compositions on three properties are qualitatively analyzed based on SHAP analysis and correlation analysis. Finally, taking Fe–B–Si–P–C system as an example, multi-objective optimization based on NSGA-III is executed to obtain Pareto front and 15 Pareto-optimal solutions for three properties. When the <span><math><msub><mrow><mi>B</mi></mrow><mrow><mi>s</mi></mrow></msub></math></span> is greater than 1.6 T, there are four alloys with <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>x</mi></mrow></msub></math></span> and <span><math><msub><mrow><mi>D</mi></mrow><mrow><mi>max</mi></mrow></msub></math></span> better than the raw data. At this time, <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>x</mi></mrow></msub></math></span> increases by 5.02% to 8.07% and <span><math><msub><mrow><mi>D</mi></mrow><mrow><mi>max</mi></mrow></msub></math></span> increases by 52.38% to 72.08%. It is also demonstrated that the sum of Fe and B content is the key factor affecting these three properties. This work provides an efficient strategy for developing new Fe-based MGs with better comprehensive performance.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123666"},"PeriodicalIF":3.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144321510","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}

{"title":"Corrigendum to “Statistical variability in mechanical properties of amorphous silica predicted by molecular dynamics” [Journal of Non-Crystalline Solids, 655 (2025), 123444]","authors":"Ephraim Bryski,&nbsp;Kedar Kirane","doi":"10.1016/j.jnoncrysol.2025.123678","DOIUrl":"10.1016/j.jnoncrysol.2025.123678","url":null,"abstract":"","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123678"},"PeriodicalIF":3.2,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144312635","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}

{"title":"On the nature of the glass transition in metallic glasses after deep relaxation","authors":"A.S. Makarov ,&nbsp;G.V. Afonin ,&nbsp;R.A. Konchakov ,&nbsp;J.C. Qiao ,&nbsp;N.P. Kobelev ,&nbsp;V.A. Khonik","doi":"10.1016/j.jnoncrysol.2025.123667","DOIUrl":"10.1016/j.jnoncrysol.2025.123667","url":null,"abstract":"<div><div>We performed parallel study of calorimetric and high-frequency shear modulus behavior of Zr-based metallic glasses after deep relaxation just below the glass transition. It is shown that deep relaxation results in the appearance of a strong peak of the excess heat capacity while the shear modulus is moderately affected. A theory assuming high-frequency shear modulus to be a major physical parameter controlling glass relaxation is suggested. The energy barrier for these rearrangements is proportional to the shear modulus while its magnitude, in turn, varies due to the changes in the defect concentration (diaelastic effect). Both dependences lead to the occurrence of heat effects. The excess heat capacity calculated using experimental shear modulus data demonstrates a very good agreement with the experimental calorimetric data for all states of glasses. It is argued that the glass transition behavior after deep relaxation bears the features of a phase transition of the first kind.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123667"},"PeriodicalIF":3.2,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279290","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}

{"title":"Effect of CaO/MgO mixture on the structure and dielectric properties of alumino-borosilicate glass","authors":"Yingxin Wang ,&nbsp;Jun Xie ,&nbsp;Zhanming Liang ,&nbsp;Lixiong Han ,&nbsp;Zhenhua Fan ,&nbsp;Jinggang Zeng ,&nbsp;Jihong Zhang ,&nbsp;Dehua Xiong","doi":"10.1016/j.jnoncrysol.2025.123676","DOIUrl":"10.1016/j.jnoncrysol.2025.123676","url":null,"abstract":"<div><div>The rapid advancement and application of 5G/6G systems, has increased the demand for low dielectric glass fibers in high-frequency applications. However, challenges remain in optimizing their structure to improve the glass's thermal compatibility and performance at GHz frequencies. This study focused on SiO₂-Al₂O₃-B₂O₃-RO-TiO₂ alkali-free aluminosilicate glass and investigated the effect of mixed alkaline earth metals (CaO and MgO) on the glass structure. Furthermore, the relationship between the glass structure and its properties was analyzed. Several techniques such as X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), and magic-angle spinning nuclear magnetic resonance (MAS-NMR) were employed to conduct both qualitative and quantitative analyses the structure of glass. The study also evaluates the glass transition temperature, thermal expansion coefficient, high-frequency dielectric properties (ranging from 0.6 to 10 GHz), density, and chemical stability of this aluminosilicate glass. Experimental results indicate that when the CaO/MgO ratio is 1:4, the glass exhibits an optimal performance, achieving the lowest coefficient of thermal expansion (α =2.97 × 10⁻⁶ / °C) and the lowest dielectric constant (4.36 at 10 GHz). Both the FTIR and MAS-NMR results reveal that the introduction of mixed alkaline earth metals optimizes the tetrahedral network structure of this glass, leading to an enhanced performance. This study highlights the role of the alkaline earth metal mixing effect in adjusting the glass composition, providing valuable insights into the critical structure-property relationship of low-dielectric, low-expansion glass fibers and contributes to both high-frequency applications and practical production.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123676"},"PeriodicalIF":3.2,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288918","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}

{"title":"Influence of Sr and Cu elements on the glass-forming ability and corrosion performance of Ca-based biomedical materials","authors":"Liying Ma ,&nbsp;Yue Wang ,&nbsp;Lixing Min ,&nbsp;Yong Zhang ,&nbsp;Guihong Geng","doi":"10.1016/j.jnoncrysol.2025.123677","DOIUrl":"10.1016/j.jnoncrysol.2025.123677","url":null,"abstract":"<div><div>Ca-based bulk metallic glasses (BMGs) have attracted significant attention due to their high strength, low elastic modulus, excellent corrosion resistance, and good biocompatibility. However, their limited glass-forming ability (GFA) and difficulty in precisely controlling the degradation rate restrict their potential for clinical applications. In this study, we investigated the effects of adding different amounts of Sr and Cu on the GFA, corrosion behavior, and cytocompatibility of Ca₆₃Mg₂₀Zn₁₇ alloy. The results showed that the addition of Sr decreased the GFA of the alloy but enhanced its corrosion resistance. In contrast, the addition of Cu improved the GFA and corrosion resistance to some extent, but the performance decreased when the Cu content exceeded 1 at. %. Cytotoxicity tests indicated that all the alloys exhibited good biocompatibility and were non-toxic to cells. This study provides a theoretical basis for the application of Ca-based BMGs in biomedical materials and offers scientific support for the development of novel degradable implant materials.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123677"},"PeriodicalIF":3.2,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144288919","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}

{"title":"Molecular structure determination of acid-initiated sodium silicate sol-gels via Raman spectroscopy","authors":"Marzieh Matinfar,&nbsp;John A. Nychka","doi":"10.1016/j.jnoncrysol.2025.123671","DOIUrl":"10.1016/j.jnoncrysol.2025.123671","url":null,"abstract":"<div><div>Silica gels derived from sodium silicate solutions (waterglass) show potential for bone scaffolds, but their structure under different processing conditions remains unclear. This study investigates the waterglass sol-gel transition using Raman spectroscopy. Silica gels were formed by mixing waterglass with boric and phosphoric acids, and Raman spectroscopy revealed structural changes during gelation. Basic gels predominantly contained higher-order silicate rings with Q³ (∼53–80 %), Q² (∼10–17 %), and Q⁰ (∼5–34 %) units, while acidic gels had lower-order rings with Q² (∼62–80 %) and Q⁰ (∼20–38 %) units. Raman analysis showed no significant changes at the gelation point, indicating gelation occurs via particle agglomeration by secondary bonds, rather than Si-O-Si bonds. Networks of agglomerated particles with structural units of varying degrees of polymerization resulted in distinct microstructures: basic gels formed less compact networks with larger pores, while acidic gels formed compact networks with smaller pores. These findings provide insights into chemically controlled silica gels with predictable structures.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123671"},"PeriodicalIF":3.2,"publicationDate":"2025-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144279289","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}

{"title":"Geometry of helium solubility sites in low-density silica glasses","authors":"Sergey V. Kukhtetskiy","doi":"10.1016/j.jnoncrysol.2025.123629","DOIUrl":"10.1016/j.jnoncrysol.2025.123629","url":null,"abstract":"<div><div>Minkowski functionals were used to study the geometry of helium solubility sites in low-density silica glasses. The study revealed that helium superdiffusion in these glasses is associated with the formation of large, branched solubility sites whose channels extend across significant regions of the glass. These sites are characterized by a high mean breadth but exhibit low relative volume and surface area.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123629"},"PeriodicalIF":3.2,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144270192","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}

{"title":"Nanoarchitectonics and radiation mitigation in Sm2O3-doped lithium borotellurite glass systems: From amorphous harmony to localized order","authors":"G. Kilic ,&nbsp;Hasan Durmus ,&nbsp;Selçuk Birdogan ,&nbsp;E. Ilik ,&nbsp;Esra Kavaz Perişanoğlu ,&nbsp;Sevda Saltık ,&nbsp;Ömer Guler ,&nbsp;Ghada ALMisned ,&nbsp;H.O. Tekin","doi":"10.1016/j.jnoncrysol.2025.123674","DOIUrl":"10.1016/j.jnoncrysol.2025.123674","url":null,"abstract":"<div><div>In this study, a novel series of nano-Sm₂O₃-doped lithium borotellurite glasses was synthesized and systematically investigated in terms of their structural, physical, and radiation shielding characteristics. X-ray diffraction confirmed the amorphous nature of all samples, while transmission electron microscopy revealed progressive nanoarchitectural refinement and particle growth with increasing Sm₂O₃ content, from uniformly dispersed nanodomains to dense agglomerates exhibiting short-range crystalline ordering. Energy-dispersive X-ray spectroscopy and elemental mapping validated the homogeneous incorporation of boron, oxygen, tellurium, and samarium throughout the glass matrix without phase separation. Gamma-ray shielding evaluations showed enhanced mass attenuation coefficients and reduced half-value layers, particularly in the Sm(n)8 sample, with significant performance gains at lower photon energies. Neutron shielding assessments further indicated elevated macroscopic removal cross-section values and dose attenuation, affirming the compositional benefit of Sm₂O₃ for fast neutron mitigation. It can be concluded that nano-Sm₂O₃ incorporation would play a multifunctional role on structural and radioprotective properties in addition to morphostructural features of lithium borotellurite glasses.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123674"},"PeriodicalIF":3.2,"publicationDate":"2025-06-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262978","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}

{"title":"Investigation of the structural, thermal, optical, and crystallization properties of novel CuO-modified Li2Pb1-xCuxP2O7 glass system","authors":"F. Faqyr ,&nbsp;A. El Boukili ,&nbsp;L. Boudad ,&nbsp;A. Zourif ,&nbsp;E.H. El Herradi ,&nbsp;T. Guedira ,&nbsp;M. Taibi","doi":"10.1016/j.jnoncrysol.2025.123673","DOIUrl":"10.1016/j.jnoncrysol.2025.123673","url":null,"abstract":"<div><div>The study investigates the structural, thermal, optical, and crystallization behavior of the novel Li₂Pb_1-xCu_xP₂O₇ (0 mol % ≤ <em>x</em> ≤ 1 mol %) glass system, where CuO progressively replaces PbO. The samples were synthesized through the conventional melt-quenching method. X-ray diffraction (XRD) analysis confirmed the amorphous nature of glasses for compositions up to <em>x</em> = 0.8 mol %, with crystallization occurring at higher CuO contents, leading to copper-based crystalline phases. Density and molar volume measurements reveal a decrease in both parameters as CuO content increases, indicating looser packing within the glass network. Differential Scanning Calorimetry (DSC) studies showed that substituting PbO with CuO decreases the glass transition temperature (T_g) and crystallization onset temperature (T_x), suggesting structural changes and increased flexibility in the glass structure. The obtained results reveal that the stability does not consistently follow a single pattern with CuO doping. Notably, the LiPb_0.6Cu_0,4P₂O₇ glass exhibits the highest stability. Fourier Transform Infrared (FTIR) spectroscopy further highlighted progressive structural changes in the phosphate network, with shifts in absorption bands attributed to Cu²⁺ substitution affecting bond angles and network connectivity. The UV–Vis absorption spectra and Tauc plot analysis revealed the interplay between the CuO content and the optical properties in the Li₂Pb_1-xCu_xP₂O₇ glass system. The optical absorption spectra of the prepared glassy samples depict absorption bands attributed to the t_2g→e_g transition of the Cu²⁺ions. Post-crystallization analysis using XRD, FTIR, and UV–Vis spectroscopy revealed a transition from amorphous to crystalline phases. The incorporation of Cu²⁺ ions was assessed to play a crucial role in restructuring the phosphate network, significantly impacting the optical properties of these materials.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"666 ","pages":"Article 123673"},"PeriodicalIF":3.2,"publicationDate":"2025-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144262991","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}