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Lancelotti RF, Zanotto ED, Sen S. Kinetics of physical aging of a silicate glass following temperature up- and down-jumps. J Chem Phys 2024; 160:034504. [PMID: 38235796 DOI: 10.1063/5.0185538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 12/22/2023] [Indexed: 01/19/2024] Open
Abstract
In this article, we investigate the structural relaxation of lithium silicate glass during isothermal physical aging by monitoring the temporal evolution of its refractive index and enthalpy following relatively large (10-40 °C) up- and down-jumps in temperature. The Kohlrausch-Williams-Watts function aptly describes the up- and down-jump data when analyzed separately. For temperature down-jumps, the glass exhibits a typical stretched exponential kinetic behavior with the non-exponentiality parameter β < 1, whereas up-jumps show a compressed exponential behavior (β > 1). We analyzed these datasets using the non-exponential and non-linear Tool-Narayanaswamy-Moynihan (TNM) model, aiming to provide a comprehensive description of the primary or α-relaxation of the glass. This model described both up- and down-jump datasets using a single value of β ≤ 1. However, the standard TNM model exhibited a progressively reduced capacity to describe the data for larger temperature jumps, which is likely a manifestation of the temperature dependence of the non-exponentiality or non-linearity of the relaxation process. We hypothesize that the compressed exponential relaxation kinetics observed for temperature up-jumps stems from a nucleation-growth-percolation-based evolution on the dynamically mobile regions within the structure, leading to a self-acceleration of the dynamics. On the other hand, temperature down-jumps result in self-retardation, as the slow-relaxing denser regions percolate in the structure to give rise to a stretched exponential behavior.
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Affiliation(s)
- Ricardo F Lancelotti
- Federal University of São Carlos, Graduate Program in Materials Science and Engineering, São Carlos, São Paulo 13565-905, Brazil
- Department of Materials Science and Engineering, University of California at Davis, Davis, California 95616, USA
| | - Edgar D Zanotto
- Federal University of São Carlos, Graduate Program in Materials Science and Engineering, São Carlos, São Paulo 13565-905, Brazil
| | - Sabyasachi Sen
- Department of Materials Science and Engineering, University of California at Davis, Davis, California 95616, USA
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Shchedrina N, Cavillon M, Ari J, Ollier N, Lancry M. Impact of Glass Free Volume on Femtosecond Laser-Written Nanograting Formation in Silica Glass. MATERIALS (BASEL, SWITZERLAND) 2024; 17:502. [PMID: 38276441 PMCID: PMC10820044 DOI: 10.3390/ma17020502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 01/14/2024] [Accepted: 01/18/2024] [Indexed: 01/27/2024]
Abstract
In this study, we investigate the effects of densification through high pressure and temperature (up to 5 GPa, 1000 °C) in the making of nanogratings in pure silica glass, inscribed with femtosecond laser. The latter were monitored through retardance measurements using polarized optical microscopy, and their internal structure was observed under scanning electron microscopy. We reveal the difficulty in making nanogratings in densified silica glasses. Based on this observation, we propose that free volume may be a key precursor to initiate nanograting formation.
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Affiliation(s)
- Nadezhda Shchedrina
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, Université Paris-Saclay, Avenue des Sciences, 91400 Orsay, France; (M.C.); (J.A.)
- Laboratoire des Solides Irradiés, École Polytechnique-CEA-CNRS, 91128 Palaiseau Cedex, France;
| | - Maxime Cavillon
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, Université Paris-Saclay, Avenue des Sciences, 91400 Orsay, France; (M.C.); (J.A.)
| | - Julien Ari
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, Université Paris-Saclay, Avenue des Sciences, 91400 Orsay, France; (M.C.); (J.A.)
| | - Nadège Ollier
- Laboratoire des Solides Irradiés, École Polytechnique-CEA-CNRS, 91128 Palaiseau Cedex, France;
| | - Matthieu Lancry
- Institut de Chimie Moléculaire et des Matériaux d’Orsay, Université Paris-Saclay, Avenue des Sciences, 91400 Orsay, France; (M.C.); (J.A.)
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Ollier N, Reghioua I, Cavani O, Mobasher M, Alessi A, le Floch S, Skuja L. Probing densified silica glass structure by molecular oxygen and E' center formation under electron irradiation. Sci Rep 2023; 13:13657. [PMID: 37607961 PMCID: PMC10444884 DOI: 10.1038/s41598-023-40270-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 08/08/2023] [Indexed: 08/24/2023] Open
Abstract
This study aims to learn more about the structure of densified silica with focus on the metamict-like silica phase (density = 2.26 g/cm3) by examining the formation of E' point defects and interstitial molecular oxygen O2 by 2.5 MeV electron irradiation. High-dose (11 GGy) irradiation creates a metamict-like phase and a large amount of interstitial O2, which is destroyed upon subsequent additional lower-dose electron irradiation. The O2 cathodoluminescence (CL) data indicate that the formation of O2 from peroxy linkages Si-O-O-Si in silica network is strongly dependent on the intertetrahedral void sizes. The position and shape of the O2 emission line support the idea that the configuration of these voids in metamict phase is close to that of non-densified silica. Moreover, data support the strong correlation between the formation of 3-membered rings of Si-O bonds and E'-centers when silica density increases from 2.20 to 2.26 g/cm3.
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Affiliation(s)
- N Ollier
- Laboratoire des Solides Irradiés Ecole Polytechnique, CNRS, CEA\DRF\IRAMIS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France.
| | - I Reghioua
- Laboratoire des Solides Irradiés Ecole Polytechnique, CNRS, CEA\DRF\IRAMIS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - O Cavani
- Laboratoire des Solides Irradiés Ecole Polytechnique, CNRS, CEA\DRF\IRAMIS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - M Mobasher
- Laboratoire des Solides Irradiés Ecole Polytechnique, CNRS, CEA\DRF\IRAMIS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - A Alessi
- Laboratoire des Solides Irradiés Ecole Polytechnique, CNRS, CEA\DRF\IRAMIS, Institut Polytechnique de Paris, 91128, Palaiseau Cedex, France
| | - S le Floch
- Institut Lumière Matière, Univ. Lyon, Université Claude Bernard Lyon 1, CNRS, 69622, Villeurbanne, France
| | - L Skuja
- Institute of Solid State Physics, University of Latvia, 8 Kengaraga Str., Riga, 1063, Latvia
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Lee SK, Lee AC, Kweon JJ. Probing Medium-Range Order in Oxide Glasses at High Pressure. J Phys Chem Lett 2021; 12:1330-1338. [PMID: 33502857 DOI: 10.1021/acs.jpclett.1c00055] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Densification in glassy networks has traditionally been described in terms of short-range structures, such as how atoms are coordinated and how the coordination polyhedron is linked in the second coordination environment. While changes in medium-range structures beyond the second coordination shells may play an important role, experimental verification of the densification beyond short-range structures is among the remaining challenges in the physical sciences. Here, a correlation NMR experiment for prototypical borate glasses under compression up to 9 GPa offers insights into the pressure-induced evolution of proximity among cations on a medium-range scale. Whereas amorphous networks at ambient pressure may favor the formation of medium-range clusters consisting primarily of similar coordination species, such segregation between distinct coordination environments tends to decrease with increasing pressure, promoting a more homogeneous distribution of dissimilar structural units. Together with an increase in the average coordination number, densification of glass accompanies a preferential rearrangement toward a random distribution, which may increase the configurational entropy. The results highlight the direct link between the pressure-induced increase in medium-range disorder and the densification of glasses under extreme compression.
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Cornet A, Martinet C, Martinez V, de Ligny D. Evidence of polyamorphic transitions during densified SiO2 glass annealing. J Chem Phys 2019; 151:164502. [DOI: 10.1063/1.5121534] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Affiliation(s)
- Antoine Cornet
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622 Villeurbanne, France
| | - Christine Martinet
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622 Villeurbanne, France
| | - Valérie Martinez
- Institut Lumière Matière, Univ Lyon, Université Claude Bernard Lyon 1, CNRS, F-69622 Villeurbanne, France
| | - Dominique de Ligny
- Department of Materials Science, Glass and Ceramics, University Erlangen-Nürnberg, Martensstra., D-91058 Erlangen, Germany
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