Journal of Non-Crystalline Solids: X最新文献_第2页

Effect of adsorbed water on mechanical and mechanochemical properties of silicate glasses 吸附水对硅酸盐玻璃力学和力学化学性能的影响

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2023.100189

Hongtu He, Jiaxin Yu

引用次数: 0

Erratum to “Prediction of elemental glass-transition temperatures of metals from thermophysical properties of liquids” [Journal of Non Crystalline Solids:X 2C (2019) 100016] “从液体的热物理性质预测金属的元素玻璃化转变温度”勘误表[非结晶固体杂志：X 2C（2019）100016]

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2023.100151

A.K. Gangopadhyay, K.F. Kelton

引用次数: 0

Erratum to “Indentation deformation and cracking in oxide glass –toward understanding of crack nucleation” [Journal of Non Crystalline Solids:X 1C (2019) 100009] “氧化物玻璃中的压痕变形和裂纹——理解裂纹成核”勘误表[非结晶固体杂志：X 1C（2019）100009]

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2022.100145

Satoshi Yoshida

引用次数: 0

Phase separation in the H2O-SiO2 system H2O-SiO2系统中的相分离

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2023.100162

Vincent J. McGahay

{"title":"Phase separation in the H2O-SiO2 system","authors":"Vincent J. McGahay","doi":"10.1016/j.nocx.2023.100162","DOIUrl":"https://doi.org/10.1016/j.nocx.2023.100162","url":null,"abstract":"<div>Phase separation in the H2O-SiO2 system is examined in view of immiscibility in the alkali and alkaline earth silicates, critical parameters of which correlate with the charge and size of network modifier cations. Although the miscibility gaps of the H2O-SiO2 system have not been completely characterized, available data indicate a phase separation tendency greater than that of Li2O-SiO2, consistent with H+ being smaller than Li+. Extension of critical parameter correlations to H2O-SiO2 leads, however, to unrealistic predictions of critical composition due to neglect of cation/anion size asymmetry. To capture this effect, a new coulombic cell model is developed and combined with an asymmetric hard-sphere mixture model. The resulting equation of state predicts H2O-SiO2 critical parameters consistent with expected critical temperature and observed critical concentration. Suppression of the miscibility gap with pressure is explained as a consequence of silanol condensing into molecular H2O and increasing the background dielectric constant.</div>","PeriodicalId":37132,"journal":{"name":"Journal of Non-Crystalline Solids: X","volume":"18 ","pages":"Article 100162"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"50186001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-resolution XPS for determining the chemical order in chalcogenide network glasses 高分辨率XPS测定硫族化物网络玻璃中的化学有序性

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2023.100188

R. Golovchak , O. Shpotyuk , A. Kovalskiy

引用次数: 2

Low-temperature phase transitions and reorientational dynamics studied by 11B NMR in glassy crystal ortho-carborane 用11B NMR研究了正碳硼烷玻璃晶的低温相变和重定向动力学

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2023.100180

Joachim Beerwerth, Roland Böhmer

{"title":"Low-temperature phase transitions and reorientational dynamics studied by 11B NMR in glassy crystal ortho-carborane","authors":"Joachim Beerwerth, Roland Böhmer","doi":"10.1016/j.nocx.2023.100180","DOIUrl":"10.1016/j.nocx.2023.100180","url":null,"abstract":"<div>Ortho-carborane condenses into a plastically crystalline state in which the icosahedrally shaped molecules perform various kinds of motion. Using 11B nuclear magnetic resonance (NMR), the molecular motions and the phase transitions occurring in solid ortho-carborane are revisited. The motional narrowing of the 11B spectra and the spin-relaxation times are monitored over wider temperature ranges than accessed previously. The spin-relaxation times are successfully described using an approach that takes second-order quadrupolar effects and a distribution of correlation times explicitly into account. Our work resolves a discrepancy previously noted for ortho-carborane when comparing activation energies from dielectric spectroscopy with those from NMR studies. In the temperature range between about 160 and 210 K a fast contribution to the longitudinal spin-lattice relaxation is observed which we interpret as a reporter of phase transitions occurring in ortho-carborane. Quantum chemical calculations are performed, not the least to assess possible effects of cross-correlated relaxation phenomena and to check whether or not the 11B quadrupolar coupling constants display significant intermolecular contributions.</div>","PeriodicalId":37132,"journal":{"name":"Journal of Non-Crystalline Solids: X","volume":"18 ","pages":"Article 100180"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48611715","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

What can one infer about chemical bonding in glasses from their medium-range structural order? 从玻璃的中等结构顺序，我们可以推断出玻璃中的化学键是什么?

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2023.100192

S.R. Elliott

{"title":"What can one infer about chemical bonding in glasses from their medium-range structural order?","authors":"S.R. Elliott","doi":"10.1016/j.nocx.2023.100192","DOIUrl":"10.1016/j.nocx.2023.100192","url":null,"abstract":"<div>Understanding the atomic structure of amorphous solids or glasses is a perennial, and ultimately insoluble, challenge, since the randomness involved means that structural information can only ever be obtained, from either experiment or structural modelling, in a statistical form, unlike the case for crystalline materials. The particular atomic structure, in a glass or crystal, is dictated by the underlying chemical bonding between the atoms. The question arises therefore, conversely, to what extent can one infer anything about the nature of the bonding in amorphous/glassy solids from some knowledge of the atomic structure? In this focused perspective article, I discuss the case of telluride glassy materials, and show that they represent a special case of bonding in chalcogenide materials. The near-linear axial structural configurations characteristic of certain telluride crystals, also prevalent in the corresponding glasses, and giving rise to a particular degree of linear medium-range structural order, are shown to arise from hyperbonding (e.g. three-centre/four-electron) interactions, rather than being associated with conventional (two-centre/two-electron) covalent bonds, as in other chalcogenide materials. These structural configurations are responsible for the unique ‘phase-change memory’ behaviour exhibited by some telluride materials. An experimental technique is proposed which should be capable of detecting such linear-character, medium-range structural order in telluride glasses.</div>","PeriodicalId":37132,"journal":{"name":"Journal of Non-Crystalline Solids: X","volume":"18 ","pages":"Article 100192"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41492020","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural stability and oxidation resistance of amorphous TaSi-based ternary alloy coatings 非晶tsi基三元合金涂层的结构稳定性和抗氧化性

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2023.100183

D.I. Snorrason , S.M. Adalsteinsson , T.K. Tryggvason , D. Dagbjartsson , A.S. Ingason , F. Magnus

引用次数: 0

Structure, vibrations and electronic transport in silicon suboxides: Application to physical unclonable functions 硅氧烷的结构、振动和电子输运:在物理不可克隆功能中的应用

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2023.100179

C. Ugwumadu , K.N. Subedi , R. Thapa , P. Apsangi , S. Swain , M.N. Kozicki , D.A. Drabold

{"title":"Structure, vibrations and electronic transport in silicon suboxides: Application to physical unclonable functions","authors":"C. Ugwumadu , K.N. Subedi , R. Thapa , P. Apsangi , S. Swain , M.N. Kozicki , D.A. Drabold","doi":"10.1016/j.nocx.2023.100179","DOIUrl":"10.1016/j.nocx.2023.100179","url":null,"abstract":"<div>This work focuses on the structure and electronic transport in atomistic models of silicon suboxides (a-SiOx; x = 1.3,1.5 and 1.7) used in the fabrication of a Physical Unclonable Function (PUF) devices. Molecular dynamics and density functional theory simulations were used to obtain the structural, electronic, and vibrational properties that contribute to electronic transport in a-SiOx. The percentage of Si-[Si1, O3] and Si-[Si3, O1], observed in a-SiO1.3, decrease with increasing O ratio. Vibrations in a-SiOx showed peaks that result from topological defects. The electronic conduction path in a-SiOx favored Si-rich regions and Si atoms with dangling bonds formed charge-trapping sites. For doped a-SiOx, the type of doping results in new conduction paths, hence qualifying a-SiOx as a viable candidate for PUF fabrication as reported by Kozicki [Patent-Publication-No.: US2021/0175185A1, 2021].</div>","PeriodicalId":37132,"journal":{"name":"Journal of Non-Crystalline Solids: X","volume":"18 ","pages":"Article 100179"},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46895491","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Erratum to “Structure of tin phosphate glasses by neutron and X-ray diffraction” [Journal of Non crystalline solids:X 2C (2019) 100017] “用中子和X射线衍射研究磷酸锡玻璃的结构”的勘误[j] .非结晶固体学报:x2c(2019) 100017。

Journal of Non-Crystalline Solids: X Pub Date : 2023-06-01 DOI: 10.1016/j.nocx.2023.100152

U. Hoppe , R.K. Brow , A.C. Hannon , M.V. Zimmermann

引用次数: 0