Improvements on the optical properties of Ge–Sb–Se chalcogenide glasses with iodine incorporation

Jiang, Chen; Wang, Xunsi; Zhu, Qingde; Nie, Qiuhua; Zhu, Miao; Zhang, Peiquan; Dai, Shixun; Shen, Xiang; Xu, Tao; Cheng, Ci; Liao, Fangxing; Liu, Zijun; Zhang, Xianghua

doi:10.1016/j.infrared.2015.09.001

Cited by 27 publications

(4 citation statements)

References 25 publications

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“…An increased value of the metallization criterion, M , proves a high‐energy band gap and insulating nature of the glass. In this case, M value shows that the widths of both valence and conduction bands are decreased, resulting in a wider band gap 40,49 …”

Section: Discussionmentioning

confidence: 99%

Synthesis and characterization of a titanium phosphate‐tellurite glass for Faraday rotators

et al. 2020

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This work is focused on investigation of thermal, structural, optical, magnetic, and magneto‐optical properties of novel titanium phosphate‐tellurite glass applied as Faraday rotators. The glass belonging to the system 35Li2O–10Al2O3–5TiO2–45P2O5–5TeO2 was prepared by a nonconventional wet route of raw materials processing, followed by melting‐quenching‐annealing steps. Some important physical properties of the investigated glass have been measured and calculated, providing knowledge related to glass compactness, electronic structure, glass forming capability, etc. XRD analysis evidenced an amorphous network structure of the investigated glass. The optical absorption in the Vis domain is mainly due to Ti3+ ions and Te2 clusters formed during the glass melting process. A relatively low optical absorption is noticed over 600 nm that activates a significant Faraday magneto‐optical effect. Photoluminescence bands in the blue, red, and infrared domains are observed, caused by Te2 clusters formed during the glass melting process. The magnetization in dependency on applied magnetic field reveals a complex behavior of the glass, depending on temperature. Thus, it is found a ferromagnetic behavior up to 2000 Oe, a paramagnetic component up to 40 000 Oe, followed by a diamagnetic one over 40 000 Oe. Faraday rotation angle and Verdet constant values in the visible domain are correlated with the reduced TeO2 content of the glass.

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Section: Discussionmentioning

confidence: 99%

Synthesis and characterization of a titanium phosphate‐tellurite glass for Faraday rotators

et al. 2020

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“…The large value of the metallization parameter M, defined as 1-R m /V M demonstrates a high energy band gap and insulating nature in the synthesized glasses, which is confirmed by the optical band gap energy, E g . A larger M value indicates that the widths of both valence and conduction bands decrease, which results in a wider band gap [16,26].…”

Section: Optical Properties and Related Electron Structure Parametersmentioning

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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“…On the other hand, the addition of halogen iodine decreases the amount of dangling bonds in the glass network and the average coordination number of the atoms, leading to the stabilization of the disordered structure against crystallization. It also increases the optical bandgap producing an increase in the transparency towards/into the visible spectrum [8,9].…”

Section: Introductionmentioning

confidence: 99%

New Chalcogenide Glass-Ceramics Based on Ge-Zn-Se for IR Applications

et al. 2022

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The consumer market requests infrared (IR) optical components, made of relatively abundant and environmentally friendly materials, are intended to be integrated or attached to smartphones. For this purpose, three new chalcogenides samples, namely Ge23.3Zn30.0Se46.7 (d_GZSe-1), Ge26.7Zn20.0Se53.3 (d_GZSe-2), and Ba4.0Ge12.0Zn17.0Se59.0I8.0 (d_GZSe-3), were obtained by mechanical alloying and processed by spark plasma sintering into dense bulk disks. Obtaining a completely amorphous and homogeneous material proved to be difficult. d_GZSe-2 and d_GZSe-3 are glass-ceramics with the amount of the amorphous phase being 19.7 and 51.4 wt. %, while d_GZSe-1 is fully polycrystalline. Doping with barium and iodine preserves the amorphous phase formed by milling and lowers the sintering temperature from 350 °C to 200 °C. The main crystalline phase in all of the prepared samples is cubic ZnSe or cubic Zn0.5Ge0.25Se, while the amorphous phase is formed GeSe4 clusters in d_GZSe-3. The color of the first two sintered samples is black (the band gap values are 0.42 and 0.79 eV), while d_GZSe-3 is red (Eg is 1.37 eV) and is transparent in IR domain. These results are promising for future research in IR materials and thin films.

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Improvements on the optical properties of Ge–Sb–Se chalcogenide glasses with iodine incorporation

Cited by 27 publications

References 25 publications

Synthesis and characterization of a titanium phosphate‐tellurite glass for Faraday rotators

Synthesis and characterization of a titanium phosphate‐tellurite glass for Faraday rotators

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

New Chalcogenide Glass-Ceramics Based on Ge-Zn-Se for IR Applications

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