Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B最新文献

Structural, dielectric and energy storage properties of BaO–Na2O–Nb2O5–P2O5 glass-ceramics bao - na20 - nb2o5 - p2o5微晶玻璃的结构、介电和储能性能

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2023-12-08 DOI: 10.13036/17533562.63.2.20

A. Ihyadn, A. Lahmar, I. Luk’yanchuk, D. Mezzane, L. Bih, A. Alimoussa, M. Amjoud, M. El Marssi

{"title":"Structural, dielectric and energy storage properties of BaO–Na2O–Nb2O5–P2O5 glass-ceramics","authors":"A. Ihyadn, A. Lahmar, I. Luk’yanchuk, D. Mezzane, L. Bih, A. Alimoussa, M. Amjoud, M. El Marssi","doi":"10.13036/17533562.63.2.20","DOIUrl":"https://doi.org/10.13036/17533562.63.2.20","url":null,"abstract":"A series of (1−x)[(2BaO–0·5Na2O)–1P2O5] –xNb2O5 (BNPN, x=0·41, 0·43, 0·45, 0·48) glass-ceramics based on phosphate glasses have been prepared via a controlled-crystallisation route. The structure, dielectric properties, interfacial polarisation and energy storage properties were systematically investigated. The x-ray diffraction results showed the simultaneous presence of Ba2NaNb5O15 tungsten bronze structure (TTB) and the NaNbO3 perovskite. A stable dielectric constant over a temperature range from 25–200°C, low dielectric losses less than 0·03 and excellent frequency stability at room temperature were obtained. The decrease of niobium content promoted the TTB crystallisation with improvement of the high dielectric properties of the system. The optimum of the dielectric constant and recoverable energy storage density were obtained for BNP41 crystallised at 1000°C. Analyses of the complex impedance indicated that the niobium content and crystallisation temperature affect the interfacial polarisation.","PeriodicalId":49696,"journal":{"name":"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78432798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Phase relations in heat treated sodium borosilicate glasses 热处理硼硅酸钠玻璃的相关系

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2023-04-01 DOI: 10.13036/17533562.64.2.22

S. Sander, F. Syrowatka, D. Enke, H. Roggendorf

{"title":"Phase relations in heat treated sodium borosilicate glasses","authors":"S. Sander, F. Syrowatka, D. Enke, H. Roggendorf","doi":"10.13036/17533562.64.2.22","DOIUrl":"https://doi.org/10.13036/17533562.64.2.22","url":null,"abstract":"Sodium borosilicate glasses are processed to porous glasses as well as to Vycor™ type glasses via phase separation and selective leaching. Both materials consist mainly of SiO2. Thermal treatment inducing phase separation is crucial for microstructure development. Sodium borosilicate glasses with molar compositions of 8Na2O.21B2O3.71SiO2 and 8Na2O.28B2O3.64 SiO2 were melted, rapidly cooled and investigated by thermal analysis and scanning electron microscopy. The glasses were thermally treated for 120 h at 630 to 730°C, and then leached, first for 72 h in 0·1 M HCl at 60°C, and subsequently for 4 h in 0·5 M NaOH at 30°C. X-ray fluorescence was applied to characterise the chemical compositions. Microstructure development was first analysed by differential thermal analysis and dilatometry, and the pore structure was characterised by Hg porosimetry and N2 adsorption. Heat treated glasses were then analysed by low voltage scanning electron microscopy, combined in one case with chemical analysis by energy dispersive x-ray analysis. The results are discussed with respect to phase relations. After long term heat treatment, at least three phases exist in two independent metastable two-phase equilibria on different size and time scales.","PeriodicalId":49696,"journal":{"name":"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74528350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Time-of-flight neutron diffraction applied to the identification of crystalline phases in historical mosaic glasses 飞行时间中子衍射在历史镶嵌玻璃晶相鉴定中的应用

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2023-04-01 DOI: 10.13036/17533562.64.2.21

G. Marcucci, A. Scherillo, Ron I. Smith, D. Di Martino

{"title":"Time-of-flight neutron diffraction applied to the identification of crystalline phases in historical mosaic glasses","authors":"G. Marcucci, A. Scherillo, Ron I. Smith, D. Di Martino","doi":"10.13036/17533562.64.2.21","DOIUrl":"https://doi.org/10.13036/17533562.64.2.21","url":null,"abstract":"We present a completely non-destructive study of the crystalline phases present in the vitreous matrix of ancient mosaic glass tesserae, based on the application of the time-of-flight neutron diffraction (ToF-ND) technique. In contrast, standard phase analysis techniques may involve a sample preparation step, which is not compatible with the requirement of damage prevention of archaeological artefacts. Moreover, superficial or spot investigation by standard methods may not provide a complete description of the samples, especially in the case of inhomogeneous materials such as mosaic glasses, whereas ToF-ND can investigate the whole glass composition at the centimetre scale. The present study aims to obtain a bulk characterization of the glasses in terms of their mineralogical phase composition. Six glass specimens of ancient mosaic glass tesserae, that had been previously analysed with other non-destructive techniques to obtain their chemical and phase composition, were investigated by ToF-ND. These tesserae come from archaeological excavations or mosaics under restoration from different archaeological sites and geographical areas (Italy, Greece, and Syria) and date from the 1st to the 11th century AD. Several crystalline phases based on Ca, Sb, Sn, Cu and Pb minerals were identified, confirming the mineralogical phases identified with Raman spectroscopy in previous analyses. In addition, several other phases were identified for five of the samples. It is concluded that ToF-ND is an extremely important complementary tool for non-destructive bulk investigations of mosaic glass tesserae, which can overcome the heterogeneity of this kind of archaeological material.","PeriodicalId":49696,"journal":{"name":"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88998673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Spectral studies of Nd3+ doped different fluorophosphate glasses for their aptness in laser applications at 1060 nm 掺Nd3+不同氟磷酸盐玻璃在1060nm激光应用的光谱研究

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2023-04-01 DOI: 10.13036/17533562.64.2.12

B. S. Narayana Devara, Y. C. Ratnakaram, M. Kumar

{"title":"Spectral studies of Nd3+ doped different fluorophosphate glasses for their aptness in laser applications at 1060 nm","authors":"B. S. Narayana Devara, Y. C. Ratnakaram, M. Kumar","doi":"10.13036/17533562.64.2.12","DOIUrl":"https://doi.org/10.13036/17533562.64.2.12","url":null,"abstract":"Neodymium doped fluorophosphate (FP:Nd3+) glasses with different chemical compositions (59NH4H2PO4+15ZnO +15BaF2+10X+1·0NdF3 (X=LiF, NaF, CaF2, SrF2, AlF3)) were prepared by melt quenching. Their structures and spectroscopic properties were studied using x-ray diffraction, FTIR, FT-Raman and 31P, 27Al MAS NMR techniques. Various structural groups were identified using FTIR and FT-Raman spectra. The depolymerisation of metaphosphate chains are described by the decrease of Q2 tetrahedral sites allowing the formation of pyrophosphate groups revealed by 31P MAS NMR spectroscopic studies. Optical properties were studied using absorption and photoluminescence spectroscopy. Judd–Ofelt intensity parameters Ωλ (λ=2, 4 and 6) were estimated from absorption spectra. Radiative parameters such as transition probabilities (A), radiative lifetimes (τR), integrated absorption cross-sections (Σ) and branching ratios (βR) were calculated. Two emission lines at 1060 and 1330 nm were observed for Nd3+ in all the fluorophosphate glasses. From the emission spectra, emission characteristics were studied via optical band gains (σe×τR) and gain bandwidths (σe×Δλeff). Fairly large numerical values for peak emission cross-sections (σe) and branching ratios (β) for 4F3/2Æ4I11/2 transition of Nd3+ ion doped calcium fluorophosphate glass were observed. These results are rosy for NIR laser application at 1060 nm.","PeriodicalId":49696,"journal":{"name":"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85017998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Electrical transport studies in Na2O and Fe2O3 containing borate glasses 含硼酸盐玻璃中Na2O和Fe2O3的电输运研究

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2023-04-01 DOI: 10.13036/17533562.64.2.20

M. Prashant Kumar, A. Banagar, N. Nagaraja

{"title":"Electrical transport studies in Na2O and Fe2O3 containing borate glasses","authors":"M. Prashant Kumar, A. Banagar, N. Nagaraja","doi":"10.13036/17533562.64.2.20","DOIUrl":"https://doi.org/10.13036/17533562.64.2.20","url":null,"abstract":"A new series of (X) Na2O.(0·5−x)Fe2O3.(0·5)B2O3 of sodium and iron oxides doped borate glasses were synthesised by melt quenching. The bulk density, structural and temperature dependent electrical properties of these glasses have been investigated. The density decreased with increase in Na2O content up to Na2O=0·2 and increased thereafter. The FTIR studies indicated the presence of BO3 and BO4 groups in the network and also has shown presence of minimum NBOs at x=0·2. These results are attributed to the significant structural modifications taking place in the glass network at Na2O=0·20. The dc electrical conductivity decreased with increase in Na2O content up to Na2O=0·20 and increased for further addition of Na2O. The activation energy has increased up to 0·2 mol% of Na2O and decreased thereafter. Based on these results, it is established that at x=0·20, a changeover of dc conduction mechanism predominantly from polaronic to ionic is taking place. Mott’s SPH, Mott’s VRH and Greave’s VRH models have been used to explain the high and low temperature conductivities.","PeriodicalId":49696,"journal":{"name":"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87913592","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Impact of MnO on the structural, physicochemical, and dissolution properties of phosphate-based glasses MnO对磷酸盐基玻璃结构、物理化学和溶解性能的影响

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2023-02-06 DOI: 10.13036/17533562.64.1.26

Sofiane El Barkaoui, Abdelaziz El Abiad, I. Anasser, M. A. Harech, H. Aouad, M. Mesnaoui, T. Labbilta

{"title":"Impact of MnO on the structural, physicochemical, and dissolution properties of phosphate-based glasses","authors":"Sofiane El Barkaoui, Abdelaziz El Abiad, I. Anasser, M. A. Harech, H. Aouad, M. Mesnaoui, T. Labbilta","doi":"10.13036/17533562.64.1.26","DOIUrl":"https://doi.org/10.13036/17533562.64.1.26","url":null,"abstract":"In this work, manganese was suggested to improve the durability of 50P2O5–33·33K2O–(11·11−x/2) CaO−(5·56−x/2) MgO –xMnO glasses with 0≤x≤ 2 mol%. Indeed, its effect on the glass structure, thermal properties, physicochemical properties, and in particular, dissolution behaviours have been studied. The conventional melt-quenching technique was used to produce glasses at 1000°C and they were characterised by differential thermal analysis, density and molar volume measurements, x-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy. Dissolution behaviours were tracked by measuring weight loss and pH. Molar volume measurements showed that phosphate glasses become more compact by incorporating MnO. Structural characterisation using Raman and infrared spectra proved that the glass network is composed mainly of metaphosphate chains. The dissolution results showed that incorporating manganese was an effective method to change the phosphate glasses’ chemical durability due to their ionic crosslinking between the nonbridging oxygen atoms of the phosphate chains, corresponding to the change in thermal properties (Tg, Tc and Tf).","PeriodicalId":49696,"journal":{"name":"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2023-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86181631","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Carbon nanotube–glass composite with high dielectric constant and low dielectric loss for energy storage device applications 高介电常数和低介电损耗的碳纳米管-玻璃复合材料在储能器件中的应用

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2023-02-06 DOI: 10.13036/17533562.64.1.01

Arnab Ghosh, S. Ghosh, J. Mukherjee, R. Banerjee

引用次数: 0

Letter to the Editor: Structural transitions of the vitreous state 致编辑的信:玻璃体状态的结构转变

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2022-12-11 DOI: 10.13036/17533562.63.6.08

A. Wright, N. Vedishcheva

{"title":"Letter to the Editor: Structural transitions of the vitreous state","authors":"A. Wright, N. Vedishcheva","doi":"10.13036/17533562.63.6.08","DOIUrl":"https://doi.org/10.13036/17533562.63.6.08","url":null,"abstract":"The presence of structural nanoheterogeneity means that sharp structural transitions at a well defined temperature or composition are an anathema to the vitreous state. Hence they should not be expected, but rather an extended transition, whose width is defined by the form and length scale of the relevant nanoheterogeneity. It should also be noted that all of the vitreous state transitions considered here, together with crystallisation at the melting point, are spatially non-uniform. This behaviour should be compared to sharp transitions that occur within the crystalline state, for example the displacive transition between α- and β-quartz, and those from a paramagnetic to a magnetically-ordered state. Such sharp transitions involve simultaneous co-operative movements across a large number identical unit cells, and hence cannot occur in the absence of a periodic structure. As a result, they are sensitive to disorder within individual unit cells, as may be seen from the case of cristobalite, where the presence of disorder reduces the αβ transition temperature, and in extremis inhibits the transition from β- to α-cristobalite.","PeriodicalId":49696,"journal":{"name":"Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B","volume":null,"pages":null},"PeriodicalIF":0.6,"publicationDate":"2022-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73863478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Network-forming oxides with non-centrosymmetric structural groups – diffraction results on molybdate and tellurite glasses 具有非中心对称结构基团的网状氧化物-钼酸盐和碲酸盐玻璃上的衍射结果

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2022-12-11 DOI: 10.13036/17533562.63.6.13

U. Hoppe

引用次数: 1

Atomistic nature of amorphous graphite 非晶石墨的原子性质

IF 0.6 4区材料科学

Physics and Chemistry of Glasses-European Journal of Glass Science and Technology Part B Pub Date : 2022-08-29 DOI: 10.13036/17533562.64.1.18

C. Ugwumadu, K. Nepal, R. Thapa, David Alan Drabold

引用次数: 3