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Ma X, Xu Y, Cheng J, Sun S, Chen Y, Wang X, Chen W, Chen S, Hu L. Influence of Mixed Na 2O/K 2O on Chemical Durability and Spectral Properties of P 2O 5-Al 2O 3-BaO-K 2O-Na 2O-Nd 2O 3 Phosphate Glasses. MATERIALS (BASEL, SWITZERLAND) 2022; 15:7439. [PMID: 36363031 PMCID: PMC9655674 DOI: 10.3390/ma15217439] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 10/12/2022] [Accepted: 10/20/2022] [Indexed: 06/16/2023]
Abstract
A series of 56P2O5-7.5Al2O3-5.9BaO-(28.56-x)K2O-xNa2O-1.51Nd2O3 phosphate glasses with different Na/(Na+K) ratios, which were specially designed for high-power laser application, were prepared by a high-temperature melting method. Except for the density, refractive index, glass transition temperature, and DC conductivity, the chemical durability and spectral properties, as emphasized by high-power and high-energy laser material, were further measured and analyzed. Regarding the chemical durability, the dissolution rates of these glasses do not show an evident mixed alkali effect with increasing the Na/(Na+K) ratio, although the effect is obvious for the glass transition temperature and DC conductivity. To better understand the nature of the dissolution mechanism, the ionic release concentrations of every element are determined. Both Na and K undergo ion exchange, but the ion exchange rate of K is much larger than that of Na. In terms of the spectral properties, the J-O parameters, emission cross-section, radiation lifetime, fluorescence lifetime, effective bandwidth, fluorescence branching ratio, and quantum efficiency are determined from absorption and emission spectra. The trend of Ω2 deviating from linearity indicates that the coordination environment symmetry of Nd3+ ions and the covalence of Nd-O also present an evident mixed alkali effect. The most important finding is that the emission cross-section and fluorescence lifetime of Nd3+ ions at 1053 nm were not affected by the change in the Na/K ratio. According to the above experimental results, the optimized value of the Na/K ratio was determined, based on which the 56P2O5-7.5Al2O3-5.9BaO-(28.56-x)K2O-xNa2O-1.51Nd2O3 glass maintains a high emission cross-section with good chemical durability.
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Affiliation(s)
- Xiben Ma
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yongchun Xu
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Jimeng Cheng
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Shiyu Sun
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Youkuo Chen
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Xin Wang
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Wei Chen
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Shubin Chen
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
| | - Lili Hu
- Key Laboratory of Materials for High Power Laser, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China
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Feng X, Yue Y, Qiu J, Jain H, Zhou S. Entropy Engineering in Inorganic Non-metallic Glass. FUNDAMENTAL RESEARCH 2022. [DOI: 10.1016/j.fmre.2022.01.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Hyun SH, Yeo TM, Ha HM, Cho JW. Structural evidence of mixed alkali effect for aluminoborosilicate glasses. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118319] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Macias-Montero M, Moreno-Zárate P, Muñoz F, Sotillo B, Garcia-Pardo M, Serna R, Fernandez P, Solis J. Competition Effects during Femtosecond Laser Induced Element Redistribution in Ba- and La-Migration Based Laser Written Waveguides. MATERIALS 2021; 14:ma14123185. [PMID: 34207797 PMCID: PMC8227110 DOI: 10.3390/ma14123185] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 06/01/2021] [Accepted: 06/04/2021] [Indexed: 12/02/2022]
Abstract
Fs-laser induced element redistribution (FLIER) has been a subject of intensive research in recent years. Its application to various types of glasses has already resulted in the production of efficient optical waveguides, tappers, amplifiers and lasers. Most of the work reported on FLIER-based waveguides refers to structures produced by the cross-migration of alkali (Na, K) and lanthanides (mostly La). The latter elements act as refractive index carrying elements. Herein, we report the production of Ba-based, FLIER-waveguides in phosphate glass with an index contrast > 10−2. Phosphate glasses modified with the same amount of Na2O and K2O, and variable amounts of BaO and/or La2O3 were used to produce the FLIER-waveguides with Ba and or La acting as index carriers. Ba-only modified glasses show a waveguide writing threshold and light guiding performance comparable to that of La-based structures. However, mixed Ba-La glasses show a much higher element migration threshold, and much smaller compositionally modified regions. This behavior is consistent with a competition effect in the cross-migration of both elements (Ba and La) against the alkalis. Such an effect can be applied to inhibit undesired element redistribution effects in fs-laser processing applications in multicomponent glasses.
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Affiliation(s)
- Manuel Macias-Montero
- Laser Processing Group, Institute of Optics (IO, CSIC), Serrano 121, 28006 Madrid, Spain; (M.M.-M.); (R.S.)
| | - Pedro Moreno-Zárate
- Electronic Engineering Department, National Technological Institute of Mexico, Campus Acatlan de Osorio, Carretera Acatlan—San Juan Ixcaquistla k.m. 5.5, Acatlan de Osorio 74949, Mexico;
| | - Francisco Muñoz
- Institute of Ceramics and Glass (ICV, CSIC), Kelsen 5, 28049 Madrid, Spain;
| | - Belén Sotillo
- Department of Materials Physics, Faculty of Physics, Complutense University of Madrid, 28040 Madrid, Spain; (B.S.); (P.F.)
| | - Marina Garcia-Pardo
- Laser Processing Group, Institute of Optics (IO, CSIC), Serrano 121, 28006 Madrid, Spain; (M.M.-M.); (R.S.)
| | - Rosalía Serna
- Laser Processing Group, Institute of Optics (IO, CSIC), Serrano 121, 28006 Madrid, Spain; (M.M.-M.); (R.S.)
| | - Paloma Fernandez
- Department of Materials Physics, Faculty of Physics, Complutense University of Madrid, 28040 Madrid, Spain; (B.S.); (P.F.)
| | - Javier Solis
- Laser Processing Group, Institute of Optics (IO, CSIC), Serrano 121, 28006 Madrid, Spain; (M.M.-M.); (R.S.)
- Correspondence: ; Tel.: +34-(56)-16800
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Le M, Tieu A, Zhu H, Ta D, Yu H, Ta T, Tran V. Surface transformation and interactions of iron oxide in glassy lubricant: An ab initio study. Chem Phys 2020. [DOI: 10.1016/j.chemphys.2020.110919] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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Lodesani F, Menziani MC, Hijiya H, Takato Y, Urata S, Pedone A. Structural origins of the Mixed Alkali Effect in Alkali Aluminosilicate Glasses: Molecular Dynamics Study and its Assessment. Sci Rep 2020; 10:2906. [PMID: 32076082 PMCID: PMC7031271 DOI: 10.1038/s41598-020-59875-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Accepted: 02/04/2020] [Indexed: 12/03/2022] Open
Abstract
The comprehension of the nonlinear effects provided by mixed alkali effect (MAE) in oxide glasses is useful to optimize glass compositions to achieve specific properties that depend on the mobility of ions, such as the chemical durability, glass transition temperature, viscosity and ionic conductivity. Although molecular dynamics (MD) simulations have already been applied to investigate the MAE on silicates, less effort has been devoted to study such phenomenon in mixed alkali aluminosilicate glasses where alkali cations can act both as modifiers, forming non-bridging oxygens and percolation channels, and as charge compensator of the AlO4- units present in the network. Moreover, the ionic conductivity has not been computed yet; thus, the accuracy of the atomistic simulations in reproducing the MAE on the property is still open to question. In this work, we have validated five major interatomic potentials for the classical MD simulations by modelling the structure, density, glass transition temperature and ionic conductivity for three aluminosilicate glasses, (25 - x)Na2O - x(K2O) - 10(Al2O3) - 65(SiO2) (x = 0, 12.5, 25). It was observed that only the core-shell (CS) polarizable force field well reproduces the experimentally measured MAE on Tg and the ionic conductivity as well as the higher conductivity of single sodium aluminosilicate glass at low temperature and the higher conductivity of single potassium aluminosilicate glass at high temperature. The MAE is related to the suppression of jump events of the alkaline ions between dissimilar sites in the percolation channels consisting of both sodium and potassium ions as in the case of alkaline silicates. The superior reproducibility of the CS potential is originated from the larger and the flexible ring structures due to the smaller Si-O-Si inter-tetrahedra angle, creating appropriate percolation channels for ion conductivity. We also report detailed assessments for using the potential models including the CS potential for investigating MAE on aluminosilicates.
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Affiliation(s)
- Federica Lodesani
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, 41125, Modena, Italia
| | - Maria Cristina Menziani
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, 41125, Modena, Italia
| | - Hiroyuki Hijiya
- Materials Integration Laboratories, AGC Inc., Yokohama, Kanagawa, 221-8755, Japan
| | - Yoichi Takato
- Innovative Technology Laboratories, AGC Inc., Yokohama, Kanagawa, 221-8755, Japan
| | - Shingo Urata
- Innovative Technology Laboratories, AGC Inc., Yokohama, Kanagawa, 221-8755, Japan
| | - Alfonso Pedone
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, via G. Campi 103, 41125, Modena, Italia.
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