Correlation between mechanical and structural properties as a function of temperature within the TeO2–TiO2–ZnO ternary system

Clermont-Gallerande, Jonathan de; Dutreilh-Colas, Maggy; Célarié, Fabrice; Guéguen, Yves; Bergler, Michael; Ligny, Dominique de; Hayakawa, Tomokatsu; Thomas, Philippe

doi:10.1016/j.jnoncrysol.2019.119716

Cited by 7 publications

(5 citation statements)

References 35 publications

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“…This difference should come from the difference in heating speed: the DSC data were continuously taken with a 10 °C heating rate, while Raman spectra were taken with a 5 °C heating rate. This evolution difference was also highlighted in the literature, [28] where the heating rate of 5 °C min À1 was considered slower enough to not cause strains inside the glass whereas the 10 °C min À1 was fast, thus resulting in the shift of T g (T c1 and T c2 , too) to higher temperatures. This difference was from 30 to 60 °C, which is in accordance with the results obtained here.…”

Section: Changes With An Increase Of Temperaturesupporting

confidence: 54%

High‐Temperature Investigation of TeO₂–Na₂O–ZnO Glasses

Clermont-Gallerande

Daiki

Colas

et al. 2022

Physica Status Solidi (b)

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Herein, a ternary system of TeO2–ZnO–Na2O (TZN) with competitive roles of covalent Zn–O and ionic Na–O bonds in tellurite glassy network is examined for high‐temperature in situ X‐ray diffraction (XRD) and Raman spectroscopy. TZN glasses are doped with Nd2O3 and the effects of Nd doping on the crystallization of glasses are also written. In situ high‐temperature XRD permits the assignment of each of the differential scanning calorimetry (DSC) crystallization peaks (the first crystallization peak (T c1) is related to sodium‐based crystalline phases, while the second crystallization peak (T c2) is correlated with tellurium‐/zinc‐based crystalline phases). The study of in situ high‐temperature Raman spectroscopy shows that T c1 shows γ‐TeO2 crystallized phase‐like peaks while T c2 crystallization has more α‐TeO2‐crystallized phase‐like peaks. Comparison at the same temperature (430 °C) permits a first understanding of the structural changes of the glasses in terms of the evolution first to α‐TeO2, ZnO, ZnTeO3, and Zn2Te3O8 crystalline phases compared with Na10Zn4O9 phase. The ZnTeO3 and Zn2Te3O8 crystallization evolution is also compared between the Nd‐doped and nondoped glasses, which gives more insight into the tellurite glass structures.

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Section: Changes With An Increase Of Temperaturesupporting

confidence: 54%

High‐Temperature Investigation of TeO₂–Na₂O–ZnO Glasses

Clermont-Gallerande

Daiki

Colas

et al. 2022

Physica Status Solidi (b)

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“… For concentration between 5 and 10%mol ZnO, a slight decrease of the TeO 3 /TeO 4 ratio and a decrease of the I and J band intensity is noted. By comparing these results to the literatures (19)(20)(21)(23)(24)(25)(26), it is possible to hypothesize that for concentrations lower than 10%mol ZnO the zinc oxide will be octahedra formed and between the chains, linking to the network, decreasing the number of NBO, and slightly increasing the network polymerization.  For concentration higher than 10%mol ZnO, there is an increase of the TeO 3 /TeO 4 ratio and an increase of the intensity of the I and J bands.…”

Section: Figure 3 : Intensity Evolution Of A) E and F Bands And B) G H I And J Bands As A Function Of The Zno Concentrationmentioning

confidence: 53%

“… For concentration higher than 10%mol ZnO, there is an increase of the TeO 3 /TeO 4 ratio and an increase of the intensity of the I and J bands. This shows a change in the structural behavior, with a change of the zinc coordination, going toward tetrahedra formed, and substituting the tellurium oxide inside the chains (24). With higher the concentration of ZnO, there will be more tetrahedra formed ZnO, increasing the TeO 3 /TeO 4 ratio and the number of NBO.…”

Section: Figure 3 : Intensity Evolution Of A) E and F Bands And B) G H I And J Bands As A Function Of The Zno Concentrationmentioning

confidence: 94%

“…As for the evolution of the Boson peak frequency, in our previous study (24) it was shown that it is more correct to look at the evolution of the blob size than the evolution of the BP frequency alone, which will be done in the discussion part.…”

Section: Study Of the Low Wavenumber Regionmentioning

confidence: 99%

“…Binary TeO 2 -ZnO glasses are useful media for ultra-low loss optical fibers (1 dB/km) in the wavelength range of 3.4-4 µm (18). Different studies have been done on TeO 2 -ZnO glasses based on Raman spectroscopic data (19)(20)(21)(22)(23)(24), and X-ray absorption fine structure (XAFS) (25). The studies showed that adding ZnO to the original TeO 2 glass matrix results in (i) a structural transformation of trigonal bipyramids TeO 4 into trigonal pyramid TeO 3 units and so a linear decrease of the optical properties; (ii) a band gap decrease as the glasses turn more transparent upon adding ZnO (26); (iii) a change in the Zn-O coordination (6-coordinated for low concentration of ZnO and 4-coordinated for high concentrations of ZnO) and structural behaviors (between the tellurite chains when 6-coordinated and substituting the TeO 2 inside the chains when 4-coordinated) (24).…”

Section: Introductionmentioning

confidence: 99%

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