Laura Löwy , Martina Urbanová , Matouš Eret , Jaroslav Kloužek , Petra Cincibusová , Miroslava Vernerová , Pavel Hrma , Albert A. Kruger , Ivana Sedenkova , Jiri Brus , Richard Pokorný
{"title":"Increasing Tc retention during nuclear waste vitrification: Structural and phase change analysis of Al-source behavior by 27Al MAS NMR","authors":"Laura Löwy , Martina Urbanová , Matouš Eret , Jaroslav Kloužek , Petra Cincibusová , Miroslava Vernerová , Pavel Hrma , Albert A. Kruger , Ivana Sedenkova , Jiri Brus , Richard Pokorný","doi":"10.1016/j.jnoncrysol.2025.123926","DOIUrl":"10.1016/j.jnoncrysol.2025.123926","url":null,"abstract":"<div><div>Efficient immobilization of volatile technetium (Tc) remains a key challenge during vitrification of low-activity nuclear waste (LAW). This study explores how different aluminum sources—kyanite, gibbsite, and boehmite—affect structural transformations in heated LAW melter feeds and influence the retention of rhenium (Re), a non-radioactive chemical surrogate for Tc. To investigate the decomposition of Al precursors and to track the formation of transient aluminum phases upon heating, we applied temperature-resolved <sup>27</sup>Al MAS NMR spectroscopy combined with principal component-based factor analysis (FA), complemented by X-ray diffraction. This FA approach, previously unexplored in nuclear waste vitrification studies, enabled precise identification and tracking of transient nanocrystalline alumina intermediates and their coordination environments formed between 400 and 900 °C. Boehmite-containing feed produced the highest proportion of ordered nanocrystalline alumina phases, followed by gibbsite, while kyanite remained undissolved to high temperature. The higher abundance of reactive Al-sites in the boehmite- and gibbsite-containing feeds correlates with improved Re retention in the glass, likely through enhanced adsorption of Re-bearing salts and/or their incorporation into transient sodalite-like aluminosilicates. Our findings not only highlight the crucial impact of Al-source selection to control intermediate phase formation and to facilitate early-stage incorporation and immobilization of volatile radionuclides, but also establish factor analysis of NMR spectra as a powerful methodology for understanding of structural and chemical transformations during vitrification.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123926"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880772","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}
Manuel Enns , Wolfgang Körner , Christian Elsässer , Daniel F. Urban
{"title":"Volume increase of silica glass due to water intercalation and silanol group formation","authors":"Manuel Enns , Wolfgang Körner , Christian Elsässer , Daniel F. Urban","doi":"10.1016/j.jnoncrysol.2025.123924","DOIUrl":"10.1016/j.jnoncrysol.2025.123924","url":null,"abstract":"<div><div>We present a theoretical study on the change of volume of silica glass due to the intercalation of molecular water and the formation of silanol groups. By a statistical representative set of density functional theory calculations, we obtained a volume increase per mole of molecular water in amorphous SiO<sub>2</sub> of 2.5 cm<span><math><msup><mrow></mrow><mrow><mn>3</mn></mrow></msup></math></span>/mol. For the reaction of water to silanol groups we found a volume increase of 8.7 cm<span><math><msup><mrow></mrow><mrow><mn>3</mn></mrow></msup></math></span>/mol. These results partially deviate from previous experimental and theoretical work concerning the mechanisms and the size of the volume change: according to our simulations, the volume change due to molecular water is not negligible. Furthermore, our results show that the exothermic dissolution of H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O into silanol pairs is not restricted to small rings of size three and four. We find an equal distribution over all ring sizes which we explain by the structural relaxation and the related energy gain of the entire amorphous neighbourhood. Most exothermic dissolution of H<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>O may happen at five-membered rings since they outnumber the three- and four-membered rings in amorphous SiO<sub>2</sub>.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123924"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798062","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}
Xiangyang Peng , Qing Du , Shuo Hou , Peipei Cao , Ziyi Li , Xianzhen Wang , Lihong Zhai , Guangyao Lu , Yuan Wu , Xiongjun Liu
{"title":"Enhancing microstructure and mechanical properties of Fe-based amorphous coatings via optimized HVOF processing","authors":"Xiangyang Peng , Qing Du , Shuo Hou , Peipei Cao , Ziyi Li , Xianzhen Wang , Lihong Zhai , Guangyao Lu , Yuan Wu , Xiongjun Liu","doi":"10.1016/j.jnoncrysol.2025.123917","DOIUrl":"10.1016/j.jnoncrysol.2025.123917","url":null,"abstract":"<div><div>Fe-based metallic glasses exhibit high strength and hardness, as well as excellent wear and corrosion resistance, demonstrating significant potential as protective coatings in energy and chemical industries. Among various coating-preparation methods, high-velocity oxygen fuel (HVOF) spraying is widely used due to its ability to achieve high amorphous content and dense coatings. Spraying conditions in the HVOF process, particularly the gun length, significantly affect the phases and microstructure of the coating. In this study, three Fe<sub>50.5</sub>Cr<sub>19</sub>Mo<sub>9</sub>Si<sub>1</sub>C<sub>12.5</sub>B<sub>8</sub> amorphous coatings were prepared by varying the gun length. XRD, DSC, and SEM analyses were conducted to investigate differences in coating microstructure, phase distribution, and thermal stability. The evolution of bond strength and coating hardness was attributed to coating porosity and carbide content, both of which are influenced by superheating during the spraying process. This study provides guidance for optimizing the preparation of Fe-based amorphous coatings.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123917"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749080","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}
Zeming Tan , Longfei Zhang , Zihua Guo , Hongxing Dong , Yiguang Jiang , Long Zhang
{"title":"Broadband ∼2 μm emissions of Tm3+/Ho3+ co-doped fluorozirconate glasses","authors":"Zeming Tan , Longfei Zhang , Zihua Guo , Hongxing Dong , Yiguang Jiang , Long Zhang","doi":"10.1016/j.jnoncrysol.2025.123927","DOIUrl":"10.1016/j.jnoncrysol.2025.123927","url":null,"abstract":"<div><div>Herein, 50ZrF₄–33BaF₂–6YF₃–4LaF₃–7AlF<sub>3</sub> (ZBYLA) glass, demonstrating remarkable thermal and chemical stability, is successfully designed and fabricated by modifying 50ZrF₄–33BaF₂–10YF₃–7AlF<sub>3</sub> (ZBYA) glass composition through La³⁺ doping. Differential thermal analyses and immersion tests reveal that the ZBYLA glass possesses a crystallization resistance superior to that of the ZBYA glass (ΔT = 79 °C). Moreover, following 18 h of immersion, the ZBYLA glass exhibits significantly lower mass loss and reduced mid-infrared transmission loss; these results collectively confirm its enhanced stability. Furthermore, when co-doped with 4 mol% Tm³⁺ and 0.2 mol% Ho³⁺, the ZBYLA glass yields a ∼2 μm emission peak with the highest fluorescence intensity and broadest full width at half maximum of 421 nm, along with the longest Tm³⁺ fluorescence lifetime (τ<sub>Tm</sub> = 5.18 ms) observed for this system. Finally, the mechanism of energy transfer (ET) between Tm³⁺ and Ho³⁺ is investigated, and a forward ET parameter significantly larger than the reverse parameter is revealed, which confirms the high efficiency of ET from Tm³⁺ to Ho³⁺. Overall, these findings indicate that the considerably high Tm³⁺/Ho³⁺ ratio in ZBYLA glass is advantageous for broadening the ∼2 μm emission and simultaneously enhancing its intensity. This positions Tm³⁺/Ho³⁺ co-doped ZBYLA glass as a highly promising candidate for application in tunable lasers and broadband amplifiers in the ∼2 μm band.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123927"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837126","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}
Gabrijela Svalina , Martina Mumelaš Petričević , Ivana Periša , Marija Tkalčević , Krešimir Salamon , Peter Nadazdy , Peter Siffalovic , Maja Mičetić
{"title":"Tunable amorphous Ge quantum dot networks in SiC & Si₃N₄ for broad-spectrum photoelectric devices","authors":"Gabrijela Svalina , Martina Mumelaš Petričević , Ivana Periša , Marija Tkalčević , Krešimir Salamon , Peter Nadazdy , Peter Siffalovic , Maja Mičetić","doi":"10.1016/j.jnoncrysol.2025.123930","DOIUrl":"10.1016/j.jnoncrysol.2025.123930","url":null,"abstract":"<div><div>Highly efficient broadband photo-electric devices require materials with tunable photoelectric properties and scalable, low complexity fabrication routes. In this work, we demonstrate thin films comprising three-dimensional, self-assembled networks of <strong>amorphous germanium quantum dots (Ge QDs)</strong> embedded in <strong>amorphous silicon carbide (SiC) and silicon nitride (Si₃N₄) matrices</strong> on p-type Si substrates. All materials are produced by single-step magnetron sputtering process without any substrate pre-treatment, lithography, or post-growth modification. By systematically varying QD size and matrix composition, we reveal how quantum confinement and host material jointly determine photoresponse. Both matrices exhibit size-dependent confinement effects in the embedded QDs, with smaller QDs providing higher responsivity and broader spectral coverage. The matrix type strongly influences current–voltage characteristics, while dark current decreases with reducing QD size. Despite their fully amorphous structure and simple fabrication, the devices achieve external quantum efficiencies up to∼60 %, detectivities of 3 × 10¹¹ Jones, and sensitivities near 9 × 10³ at room temperature across 315–1100 nm. These findings establish <strong>tunable amorphous Ge QD networks in oxygen-free matrices</strong> as cost-effective, high-performance platforms for broadband photosensitive devices.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123930"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837127","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":"Unraveling the impact of short-range ordering on the strengthening mechanisms in Mg-Y Alloys","authors":"S. Zhang , H.Y. Song , M.R. An","doi":"10.1016/j.jnoncrysol.2025.123903","DOIUrl":"10.1016/j.jnoncrysol.2025.123903","url":null,"abstract":"<div><div>Rare earth (RE) alloying critically enhances Mg alloys, yet the atomistic origins of RE-driven strengthening mechanism remain elusive. Through hybrid molecular dynamics/Monte Carlo simulations, we investigate the impact of the Y concentration, short-range ordering (SRO), and temperature on the mechanical properties of the Mg alloys, specifically revealing the interaction mechanism between SRO structures and dislocation. Results demonstrate that Y solutes preferentially form localized SRO structures, which are beneficial for promoting the solid-state amorphization of the alloys. As Y concentration increases, the dominant strengthening mechanism shifts from conventional solid solution strengthening to a synergistic interplay of solid solution strengthening and SRO-induced local amorphization — elevating critical resolved shear stress by up to 50 % versus random solid solutions. Crucially, the SRO structures suppress dislocation glide via atomic-scale pinning. Furthermore, the mechanical properties of the alloys containing SRO exhibit anomalous temperature sensitivity due to the temperature-dependent stability of the SRO structures. These findings provide fundamental insights for designing advanced high-performance Mg alloys.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123903"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145692942","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 introducing yttrium on crystallization behavior and structural characteristic of sputter-deposited Sb2Te3 thin film","authors":"Zhengquan Zhou , Weihua Wu , Yu Li , Zhichao Qi , Kangle Yong","doi":"10.1016/j.jnoncrysol.2025.123928","DOIUrl":"10.1016/j.jnoncrysol.2025.123928","url":null,"abstract":"<div><div>The existing challenge of power consumption and the inherent trade-off between crystallization speed and thermal stability of traditional phase change materials have hindered their application in storage class memory. In this study, the physical properties and structural characterization of Y-doped and pure Sb<sub>2</sub>Te<sub>3</sub> thin films were analyzed, including phase-change performance, electrical properties, optical properties, crystal structure, and crystallization mechanisms. Y doping can increase the crystallization temperature and widen the bandgap of Sb<sub>2</sub>Te<sub>3</sub>, significantly improving thermal stability and crystalline resistance. Also, Y incorporation can refine grain size and reduce surface roughness, which is of great significance for reducing power consumption and improving the reliability of Sb<sub>2</sub>Te<sub>3</sub> material. Theoretical calculations revealed that Y doping can mitigate structural defects in Sb<sub>2</sub>Te<sub>3</sub> by reducing Te-Te wrong-bonding configurations and forming robust Y-Te covalent bonds. Electrical measurements show that phase change cells based on Y-doped Sb<sub>2</sub>Te<sub>3</sub> exhibit lower power consumption and faster switching speeds than those of Ge<sub>2</sub>Sb<sub>2</sub>Te<sub>3</sub>. These findings prove that yttrium doping can effectively improve the thermal stability, resistance drift, and power consumption of Sb<sub>2</sub>Te<sub>3</sub> material, providing an important insight to enhance the comprehensive performance of phase-change memory.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123928"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837129","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}
Amirhossein Moghanian , Sirus Safaee , Ahmet Akif Kizilkurtlu , Mohammad Mehrdar , Ramin Farmani , Soroush Mehrani , Ali Akpek , Mahdis Nesabi
{"title":"Powder metallurgy for dental biomaterials: Applications, processing, properties and clinical relevance","authors":"Amirhossein Moghanian , Sirus Safaee , Ahmet Akif Kizilkurtlu , Mohammad Mehrdar , Ramin Farmani , Soroush Mehrani , Ali Akpek , Mahdis Nesabi","doi":"10.1016/j.jnoncrysol.2025.123921","DOIUrl":"10.1016/j.jnoncrysol.2025.123921","url":null,"abstract":"<div><div>Advances in powder metallurgy (PM) have revolutionized the fabrication of dental biomaterials by enabling precise microstructural control and tailored porosity (up to 80 % porosity in scaffolds) while simultaneously reducing waste and processing time. Although conventional PM processes offer a versatile toolkit for dental applications, consolidation techniques achieve near-full densification (exceeding 85 % of theoretical density) and refine microstructures in metallic and ceramic dental restoratives, resulting in enhanced mechanical integrity (compressive strength up to 203 MPa for TiB<sub>2</sub>/Ti composites) and biocompatibility. Post-processing treatments, ranging from thermal unbinding and sintering schedules to surface modifications, further optimize the mechanical performance (Young’s modulus matching bone at 2.2–12.1 GPa), surface finish, and corrosion resistance of the PM-derived dental components. A diverse array of biomaterials, including titanium–indium alloys for endodontic posts and cobalt–chromium partial denture frameworks, has been successfully produced via PM, demonstrating favorable osseointegration and mechanical performance (tensile strength up to 290 MPa for Ta-Zr alloys). Comprehensive performance evaluations, including fatigue testing, wear analysis, and cytocompatibility assays, confirm the clinical viability of PM-fabricated dental biomaterials. Comparative analyses further elucidate the trade-offs between process parameters, part complexity, and cost efficiency, thereby guiding rational selection for specific prosthetic applications. Nonetheless, challenges persist in scaling PM processes for custom dental geometries, managing the residual porosity (5–15 % in sintered parts), and ensuring consistent biocompatibility across diverse alloy systems. This review aims to cover and analyze these issues by mentioning recent advancements, current limitations, and the future landscape of dental PM-derived biomaterial fabrication in a wide framework.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123921"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145798009","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":"Trace Ag addition promotes exceptional soft magnetic properties in Fe-based nanocrystalline alloys under low heating rates annealing","authors":"Yaocen Wang , Yan Zhang","doi":"10.1016/j.jnoncrysol.2025.123934","DOIUrl":"10.1016/j.jnoncrysol.2025.123934","url":null,"abstract":"<div><div>This article reports a unique discovery that trace addition of Ag can significantly promote nano-crystallization in Fe-based amorphous alloys during annealing, which enables excellent soft magnetic properties to be achieved under low heating rates, a condition typically challenging for such materials. The designed Fe₈₂.₆B₁₅P₁Cu₁.₃Ag₀.₁ nanocrystalline alloy exhibits outstanding soft magnetic performance of 6.5 A/m in <em>H<sub>c</sub></em> and 1.85 T in <em>B<sub>s</sub></em> at a heating rate of 10 K/min. Notably, it maintains a low <em>H<sub>c</sub></em> of 8.0 A/m and a high <em>B<sub>s</sub></em> of 1.80 T even at an exceptionally slow heating rate of 0.5 K/min, highlighting its exceptional industrial manufacturability. This effect can be attributed mainly to two factors: the large positive <em>H<sub>mix</sub></em> of Fe-Ag causes segregation and local enrichment of Fe that further promots α-Fe nucleation in addition to the effect of 1.3 at.% Cu addition, and the bonding preference of Ag-metalloid along with reduction of necessary annealing temperature suppress rapid grain growth by retard the diffusion of certain metalloid atoms. Based on this understanding, by optimizing the Fe-B-P-Cu-Ag alloy system and searching for other Fe-repelling elements including those insoluble with Fe, our finding reveals a new compositional design strategy for developing high-performance Fe-based nanocrystalline alloys that combine low <em>H<sub>c</sub></em>, high <em>B<sub>s</sub></em>, and excellent industrial processability.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123934"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145880770","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}
Kai Wang , Guan Zhang , Xueru Fan , Dongmei Zhao , Lei Xie , Jianping Zhou , Yong Huang , Lei Che , Tiezhen Ren
{"title":"Effect of Si addition on mechanical properties of Ni40Zr28.5Ti16.5Al10Cu5 bulk metallic glasses","authors":"Kai Wang , Guan Zhang , Xueru Fan , Dongmei Zhao , Lei Xie , Jianping Zhou , Yong Huang , Lei Che , Tiezhen Ren","doi":"10.1016/j.jnoncrysol.2025.123902","DOIUrl":"10.1016/j.jnoncrysol.2025.123902","url":null,"abstract":"<div><div>This study designed and fabricated a new Ni<sub>40</sub>Zr<sub>28.5</sub>Ti<sub>16.5</sub>Al<sub>10</sub>Cu<sub>5-X</sub>Si<sub>X</sub> (<em>X</em> = 0, 0.5, 1, 1.5, 2, denoted as Si0, Si0.5, Si1, Si1.5, and Si2, respectively) bulk metallic glass (BMGs). It systematically investigated the effects of trace Si addition on the microhardness, compressive mechanical properties, and serrated flow behavior of this Ni-based BMGs. Mechanical testing revealed that at the optimal Si content (<em>X</em> = 1.5 at. %), the Ni-based BMG achieved a microhardness of 860 HV<sub>1</sub>, along with a yield strength of 3154 MPa and a plastic strain of 13.9 %. Statistical analysis of stress drop data showed that their distribution exhibited a significant monotonically decreasing trend, conforming to a power-law distribution, suggesting the alloy was in a self-organized critical (SOC) state. High-resolution transmission electron microscopy (HRTEM) characterization revealed that Si addition promoted the formation of icosahedral clusters and short-range order (SRO) structures. These structures act as pinning points, inducing branching and intersection of shear bands and effectively inhibiting their propagation, thereby significantly enhancing the plastic deformation capability of the alloy.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"674 ","pages":"Article 123902"},"PeriodicalIF":3.5,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145749074","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}