Journal of Non-crystalline Solids最新文献

The photosensitivity and its microstructural origin of Ge-doped silica fiber: Effect of H2 content

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-03-07 DOI: 10.1016/j.jnoncrysol.2025.123478

Yichong Chen , Xin Li , Yafei Wang , Mingjun Zhao , Chongyun Shao , Chunlei Yu , Lili Hu

{"title":"The photosensitivity and its microstructural origin of Ge-doped silica fiber: Effect of H2 content","authors":"Yichong Chen , Xin Li , Yafei Wang , Mingjun Zhao , Chongyun Shao , Chunlei Yu , Lili Hu","doi":"10.1016/j.jnoncrysol.2025.123478","DOIUrl":"10.1016/j.jnoncrysol.2025.123478","url":null,"abstract":"<div><div>Hydrogen (H2) loading has been widely used to enhance the photosensitivity of germanium-doped fibers (GDF). However, the photosensitivity enhancement mechanism via H2-loading remains unclear. In this work, GDF was prepared using modified chemical vapor deposition (MCVD) method. H2-loading treatment is carried out on Ge-doped silica glass and fiber using high-pressure autoclave. A 248 nm KrF excimer laser was used to expose Ge-doped silica glass and fiber with or without H2 loading. The influence of H2 content on the photosensitivity of GDF was studied during the FBG inscription process, and the influence mechanism was revealed from the atomic level microscale. The evolution of H2 content-dependent color centers caused by 248 nm laser irradiation and their characteristics in GDF core glasses was identified through photoluminescence (PL), radiation induced absorption (RIA), electron paramagnetic resonance (EPR) and other methods. The results showed that the Ge-ODCs content in the Ge-doped silica with H2-loading decreased significantly after 248 nm laser irradiation, producing much more Ge(1), Ge-E ', H(II) color centers than the glass without H2, but no Ge(2) was generated. The generation of Ge-E' was significantly enhanced in the presence of H(II). This work visually demonstrated the effect of H2 loading on the enhancement of photosensitivity and further revealed H2 significantly accelerated the rate of color center conversion.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"656 ","pages":"Article 123478"},"PeriodicalIF":3.2,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562360","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

Thermal stability and crystallization kinetics of Sb doped InSe alloys for phase change memory applications

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-03-06 DOI: 10.1016/j.jnoncrysol.2025.123479

Diksha Thakur , Shobhna Chaudhary , Vir Singh Rangra

{"title":"Thermal stability and crystallization kinetics of Sb doped InSe alloys for phase change memory applications","authors":"Diksha Thakur , Shobhna Chaudhary , Vir Singh Rangra","doi":"10.1016/j.jnoncrysol.2025.123479","DOIUrl":"10.1016/j.jnoncrysol.2025.123479","url":null,"abstract":"<div><div>Bulk samples of In0.1Se0.9-xSbx (0 ≤ x ≤ 0.24) were synthesized using the conventional melt-quenching technique. In this study, the effect of Sb doping and heating rates on thermal parameters such as glass transition temperature (Tg), peak crystallization temperature (Tp), and melting temperature (Tm) were analyzed via non-isothermal differential scanning calorimetry (DSC). Various thermal stability parameters such as ΔT, Kgl, H, S and Trg were calculated using these characteristic temperatures. Among all the studied samples, x = 0.04 exhibited the highest thermal stability, as indicated by the largest ΔT and thermal stability factors (H and S). Glass transition (Eg) and crystallization activation energies (Ec) were calculated using multiple approaches, revealing that x = 0.24 had the lowest glass transition activation energy, suggesting higher atomic mobility. The crystallization kinetics was studied using Kissinger, Mahadevan, Augis & Bennett and Matusita approaches. Crystallization activation energy (Ec) is a critical parameter for phase-change memory (PCM) applications. The calculated values of Ec suggested that x = 0.04, with the highest Ec, is well-suited for long-term data storage. Furthermore, Avrami index and growth dimension analyses showed one-dimensional crystallization for most compositions, with exceptions for x = 0 and x = 0.04 (three-dimensional). These findings highlight the tunable thermal and crystallization properties of Sb-doped InSe alloys, making them promising candidates for PCM and multilevel memory applications.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"656 ","pages":"Article 123479"},"PeriodicalIF":3.2,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143562359","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

Revealing structural evolution during stress relaxation in metallic glass by nanoindentation and molecular dynamic simulation

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-03-05 DOI: 10.1016/j.jnoncrysol.2025.123483

Yizhou Liu , Yanhuai Ding , Boyuan Yin , Meng Gao , Fu Xu

引用次数: 0

Probing the high-pressure densification of amorphous silica nanomaterials using SBA-15: An investigation into the paradoxical nature of the first sharp diffraction peak

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-03-04 DOI: 10.1016/j.jnoncrysol.2025.123448

Michael R. Bull , Rachel C. Huber , Ping Yu , Tanner J Finney , Noah Felvey , Paul Chow , Yuming Xiao , Tonya L. Kuhl , Erik B. Watkins

{"title":"Probing the high-pressure densification of amorphous silica nanomaterials using SBA-15: An investigation into the paradoxical nature of the first sharp diffraction peak","authors":"Michael R. Bull , Rachel C. Huber , Ping Yu , Tanner J Finney , Noah Felvey , Paul Chow , Yuming Xiao , Tonya L. Kuhl , Erik B. Watkins","doi":"10.1016/j.jnoncrysol.2025.123448","DOIUrl":"10.1016/j.jnoncrysol.2025.123448","url":null,"abstract":"<div><div>The densification and X-ray scattering of mesoporous silica (SBA-15) were measured simultaneously under gigapascal (GPa) pressures. The results are compared to previous work on amorphous silica (aSiO2) and demonstrate the feasibility of measuring the densification of aSiO2 nanomaterials with small angle X-ray scattering (SAXS) in-situ in a diamond anvil cell. Compared to fused silica, the position of the SBA-15 first sharp diffraction peak (FSDP) is 7 times more sensitive to pressure and has a transition in its pressure dependance at a lower pressure (∼2 GPa vs. ∼13 GPa). SBA-15 has two densification regimes, low-density amorphous and high-density amorphous, which have equations of state comparable to low-density amorphous and high-density amorphous fused silica. The transition between these two regimes occurs at a lower pressure than for fused silica (∼1.5 GPa vs. ∼13 GPa). The results suggest that there is no direct relationship between the FSDP position and the aSiO2 density during compression.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"656 ","pages":"Article 123448"},"PeriodicalIF":3.2,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143534021","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

Preparation and thermal-mechanical properties of physical and chemical dual-reinforced SiO2 aerogels

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-03-04 DOI: 10.1016/j.jnoncrysol.2025.123462

Wang Zhan , Jinhong Mo , Lingling Tang , Fan Shi , Le Chen , Lixia Li , Mingyi Chen , Qinghong Kong , Ru Zhou , Juncheng Jiang

引用次数: 0

Corrigendum to “Thermophysical Properties of Zr65Cu17.5Ni10Al7.5 Bulk Metallic Glass” [Journal of Non-Crystalline Solids 652 (2025) 123400]

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-03-03 DOI: 10.1016/j.jnoncrysol.2025.123477

Ruslan A. Sergiienko , Adit Sharma , Oleksandr A. Shcheretskyi , Vladislav Yu. Zadorozhnyy , Volodymyr O. Shcheretskyi , Oleksandr M. Myslyvchenko , Anatolii M. Verkhovliuk , Andrey A. Stepashkin , J.C. Qiao

引用次数: 0

Viscosity of liquid Co-Cu alloys

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-03-01 DOI: 10.1016/j.jnoncrysol.2025.123481

О.A. Chikova , V.S. Tsepelev , N.I. Sinitsin , K． Yu． Shmakova , V.V. V'yukhin

{"title":"Viscosity of liquid Co-Cu alloys","authors":"О.A. Chikova , V.S. Tsepelev , N.I. Sinitsin , K． Yu． Shmakova , V.V. V'yukhin","doi":"10.1016/j.jnoncrysol.2025.123481","DOIUrl":"10.1016/j.jnoncrysol.2025.123481","url":null,"abstract":"<div><div>The paper presents original experimental data on the kinematic viscosity of liquid Co-Cu alloys with Cu contents of 10, 20, 30, 40, 50, 60, 70, 80, and 90 at.%. The measurements were conducted during heating from the liquidus temperature, TL, to 2000 K, followed by cooling of the melt to the stratification temperature, T**. The liquidus temperature, TL, and the melt stratification temperature, T**, were determined based on viscosimetric experiments. A change in the viscous flow regime of the melt during heating was observed at a specific temperature, T*, for each composition. This change is described by variations in the parameters of the Arrhenius equation: the pre-exponential factor and the activation energy. The authors attribute the change in the viscous flow regime at T* to a liquid-liquid structural transition.</div><div>An analysis of the temperature dependences of the viscosity of Co-Cu melts with Cu contents of 30, 40, 60, and 80 at.% in the temperature range from TL to T*, based on the theory of rate processes, indirectly indicates the presence of dispersed particles larger than 2 nm. These particles are enriched in one of the components, suspended in a medium of different composition, and separated by an interphase boundary. The concentration dependence of the viscosity of Co-u melts reveals pronounced minima at approximately 30 at.% and 70 at.% Cu, which can be explained by the two-phase structure of the metal before melting.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"656 ","pages":"Article 123481"},"PeriodicalIF":3.2,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143521103","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

Molecular dynamics simulation of dynamic stretching of borosilicate glass

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-02-27 DOI: 10.1016/j.jnoncrysol.2025.123475

Fugang Wang , Fan Yang , Jiangtao Zhao , Peng Lv , Hengzhi Sun , Ahsan Ejaz , Tieshan Wang

{"title":"Molecular dynamics simulation of dynamic stretching of borosilicate glass","authors":"Fugang Wang , Fan Yang , Jiangtao Zhao , Peng Lv , Hengzhi Sun , Ahsan Ejaz , Tieshan Wang","doi":"10.1016/j.jnoncrysol.2025.123475","DOIUrl":"10.1016/j.jnoncrysol.2025.123475","url":null,"abstract":"<div><div>Sodium borosilicate (NBS) glass is a potential material for high-level radioactive waste storage, with its mechanical properties critical to its stability under deep geological disposal conditions. This study investigates the effects of the K value (SiO2/B2O3 in mole percent), temperature, and strain rate on the Young's modulus, tensile strength, and fracture strain of NBS glass using molecular dynamics simulation. Results show that increasing the K value enhances tensile strength and fracture strain linearly. The transition from elastic to plastic deformation is driven by the conversion of Si-O structures. Young's modulus and tensile strength decrease linearly with rising temperature, but elevated temperatures also induce plastic flow, shifting the fracture behavior from brittle to ductile. Microstructural analysis reveals that higher temperatures accelerate B-O and Si-O structure conversion, increasing the strain needed for plastic deformation. Moreover, higher strain rates improve both Young's modulus and tensile strength.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"655 ","pages":"Article 123475"},"PeriodicalIF":3.2,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509636","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 Gd on the devitrification and magnetic properties of [(Fe0.6Co0.4)0.75Si0.05B0.20]96-xNb4Gdx metallic glasses

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-02-27 DOI: 10.1016/j.jnoncrysol.2025.123460

J. Torrens-Serra , B. Kustov , P. Bruna

{"title":"Effect of Gd on the devitrification and magnetic properties of [(Fe0.6Co0.4)0.75Si0.05B0.20]96-xNb4Gdx metallic glasses","authors":"J. Torrens-Serra , B. Kustov , P. Bruna","doi":"10.1016/j.jnoncrysol.2025.123460","DOIUrl":"10.1016/j.jnoncrysol.2025.123460","url":null,"abstract":"<div><div>The influence of microalloying with Gd on the thermal stability, crystallization and magnetic properties of [Fe0.6Co0.4)0.75Si0.05B0.20]96-xNb4Gdx (x=0,1,2,5) metallic glasses was examined. Various glass-forming ability criteria were calculated based on thermal characteristics obtained by differential scanning calorimetry for melt-spun ribbons and compared to the maximum size achieved of the alloys via direct rod casting. Although thermodynamic-based criteria predict larger glass-forming ability for the alloy with higher Gd content, x=5 alloy showed the lowest ability to form full glassy rods. The structural evolution after first crystallization event was analyzed by x-ray diffraction and Transmission Mössbauer spectroscopy. The observed changes in the precipitated phases in x=5 alloy compared to x=0,1,2 alloys are associated to the decrease in the glass-forming ability. The formation of phases other than (FeCo)23B6 phase in x=5 alloy is responsible for not achieving fully glassy rods. Additionally, the magnetic properties of glassy ribbons are significantly affected by the addition of Gd. Saturation magnetization and Curie temperature decrease as Gd content increases.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"655 ","pages":"Article 123460"},"PeriodicalIF":3.2,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509634","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

Theoretical analysis on the correlations between the mechanical properties and structures of (100-x)GeS2-xSb2S3 chalcogenide glasses

IF 3.2 3区材料科学

Journal of Non-crystalline Solids Pub Date : 2025-02-26 DOI: 10.1016/j.jnoncrysol.2025.123461

Ping Lu , Xingyu Wu , Jianqing Yang , Yinsheng Xu , Mengling Xia , Dong Wu

{"title":"Theoretical analysis on the correlations between the mechanical properties and structures of (100-x)GeS2-xSb2S3 chalcogenide glasses","authors":"Ping Lu , Xingyu Wu , Jianqing Yang , Yinsheng Xu , Mengling Xia , Dong Wu","doi":"10.1016/j.jnoncrysol.2025.123461","DOIUrl":"10.1016/j.jnoncrysol.2025.123461","url":null,"abstract":"<div><div>The poor mechanical properties are the bottle neck for the applications of chalcogenide glasses to the integrated devices for infrared sensing and imaging. In this study, a series of (100-x)GeS2-xSb2S3 glasses were synthesized with the substitutional addition of Sb2S3 into the Ge-S glass network, and the mechanical properties were affected accordingly. Linear relations were found between the hardness of the GSSx glasses and the topological constraints. The conventional Makishima-Mackenzie model underestimated the elastic moduli of the ternary chalcogenide glasses, while it is promising to quantify the moduli in terms of free energy density of the topological constraints. The creep stress exponent was found to vary with the evolution of glass network rather than the variation of topological constraint. Lastly, the fracture toughness seems to be insensitive to the topological constraints, and the improved local ductility was suggested to occur in the GSSx glasses with high Sb content.</div></div>","PeriodicalId":16461,"journal":{"name":"Journal of Non-crystalline Solids","volume":"655 ","pages":"Article 123461"},"PeriodicalIF":3.2,"publicationDate":"2025-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143509635","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