Effect of manganese doping on vibrational and physical properties of ZrTe 3 O 8

Koubàa, Mohamed; Karray, R.; Dhifallah, Nabil; Kabadou, A.; Bsais, L.

doi:10.1016/j.jallcom.2017.03.053

Cited by 5 publications

(3 citation statements)

References 26 publications

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“…The Raman spectra of the samples heated for 2 or 3 h at 340 °C (Figure ) are characteristic of crystalline materials as they exhibit several and well-defined bands. The attribution of the main bands is compatible with the cubic ZrTe 3 O 8 crystalline phase. , …”

Section: Resultsmentioning

confidence: 99%

“…The attribution of the main bands is compatible with the cubic ZrTe 3 O 8 crystalline phase. 41,42 NMR of 65TeO 2 -35ZrF 4 Glass-Ceramics. The evolution of the atomic local environments leading to the stabilization of the novel antiglass phase was also studied by 125 Te and 19 F MAS NMR spectroscopy.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…The attribution of the main bands is compatible with the cubic ZrTe 3 O 8 crystalline phase. 33,34 The evolution of the atomic local environments leading to the stabilization of the novel antiglass phase was also studied by 125 Te and 19 F magic angle spinning (MAS) NMR spectroscopy. As shown in Figure 7(a), the 125 Te MAS spectrum of the 65TeO 2 -35ZrF 4 glass exhibits a broad isotropic resonance centered at 1620 ppm with an intense spinning sideband pattern due to a 125 Te chemical shift anisotropy of about δ csa ~ -700 ppm and η csa ~ 0.3.…”

Section: Characterizations Of 65teo 2 -35zrf 4 Glass-ceramics a Structural And Microstructuralmentioning

confidence: 99%

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Highly Transparent Fluorotellurite Glass-Ceramics: Structural Investigations and Luminescence Properties

et al. 2019

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Crystallization from glass can lead to the stabilization of metastable crystalline phases, which offers an interesting way to unveil novel binary or ternary compounds and control the optical properties of obtained glass-ceramics. Here, we report on a crystallization study of the ZrF 4 -TeO 2 glass system and show that under specific synthesis conditions, a previously unreported Zr 10 Te 9 O x F y zirconium oxyfluorotellurite anti-glass phase can be selectively crystallized at the nanometric scale within the 65TeO 2 -35ZrF 4 amorphous matrix. This leads to highly transparent glass-ceramics in both the visible and near infrared ranges. Under longer heattreatment, the stable cubic ZrTe 3 O 8 phase crystallizes in addition to the previous unreported anti-glass phase. The structure, microstructure and optical properties of different 65TeO 2 -35ZrF 4 Tm 3+ -doped glass-ceramics, were investigated in detail by means of X-ray diffraction, 2 scanning and transmission electron microscopies, 19 F, 91 Zr and 125 Te NMR, Raman and photoluminescence spectroscopies.Single crystals of this novel phase could be successfully synthesized from the liquid state and their basic structure has been determined. The crystal chemistry study of several samples evidences various superstructures along a, b and c axes and likely twinning of crystals, suggesting that the novel phase corresponds to a complex series of micro-phases rather than a stoichiometric compound. These results highlight the peculiar disorder-order phenomenon occurring in tellurite materials.

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Section: Resultsmentioning

confidence: 99%