Mechanistic insight into the non-hydrolytic sol–gel process of tellurite glass films to attain a high transmission

Pan, Xuanzhao; Zhao, Jing; Qian, Gujie; Zhang, Xiaozhou; Ruan, Yinlan; Abell, Andrew D.; Ebendorff‐Heidepriem, Heike

doi:10.1039/c9ra10731b

Cited by 2 publications

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References 53 publications

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“…Sodium zinc tellurite sol–gel glass films were explored in relation with the mechanism of the TeO 2 reduction to metallic-Te [ 7 ]. It was demonstrated that the formation of metallic-Te is responsible for the decrease of the optical transmission in the Vis domain.…”

Section: Introductionmentioning

confidence: 99%

A New Zinc Phosphate-Tellurite Glass for Magneto-Optical Applications

et al. 2020

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This work investigates the structural, magnetic and magneto-optical properties of a new zinc phosphate-tellurite glass belonging to the 45ZnO-10Al2O3-40P2O5-5TeO2 system. The glass was prepared by a wet method of processing the starting reagents followed by suitable melting–stirring–quenching–annealing steps. Specific parameters such as density, average molecular mass, molar volume, oxygen packaging density, refractive index, molar refractivity, electronic polarizability, reflection loss, optical transmission, band gap and optical basicity have been reported together with thermal, magnetic and magneto-optical characteristics. Absorption bands appear in the blue and red visible region, while over 600 nm the glass becomes more transparent. FTIR and Raman spectra evidenced phosphate-tellurite vibration modes proving the P2O5 and TeO2 network forming role. Magnetic measurements reveal the diamagnetic character of the Te-doped glass with an additional weak ferromagnetic signal, specific to diluted ferromagnetic oxides. Positive Faraday rotation angle with monotonous decreasing value at increasing wavelength was evidenced from magneto-optical measurements. The final product is a composite material comprising of a non-crystalline vitreous phase and Te-based nanoclusters accompanied by oxygen vacancies. The metallic-like Te colloids are responsible for the dark reddish color of the glass whereas the accompanying oxygen vacancies might be responsible for the weak ferromagnetic signal persisting up to room temperature.

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Section: Introductionmentioning

confidence: 99%