Effects of Nb&lt;SUB&gt;2&lt;/SUB&gt;O&lt;SUB&gt;5&lt;/SUB&gt;/WO&lt;SUB&gt;3&lt;/SUB&gt; Codoping on Thermal Stability and Raman Spectral Properties of Tellurite Glasses

Yang, Q.; Chen, Dongdan; Qian, Qi; Zhang, Qinyuan; Yang, Zhuo; Jiang, Zhonghong

doi:10.3724/sp.j.1077.2009.01049

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…This is attributed to the increase of the mean bond strength and network connectivity. 14,15 show that DT and S increased from 113 to 154 C and 5.14 to 7.73, respectively, when WO 3 content was increased from 0 to 15 mol. % in step of 5 mol.…”

Section: A Effect Of Wo 3 Moo 3 and P 2 O 5 On The Physical And mentioning

confidence: 98%

Compositional effect of WO3, MoO3, and P2O5 on Raman spectroscopy of tellurite glass for broadband and high gain Raman amplifier

Yuan¹,

Yang²,

Chen³

et al. 2012

Journal of Applied Physics

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In order to obtain broadband and high Raman gain coefficient in the tellurite glass, a detailed study of the effects of WO 3 , MoO 3 , and P 2 O 5 in TeO 2-ZnO-Na 2 O-Nb 2 O 5 (TZNN) glass system on the thermal stabilities and Raman spectroscopic was performed. It was found that both WO 3 and MoO 3 improved the glass thermal stability and enhanced the bandwidth significantly. Higher Raman gain coefficients and broader bandwidth were realized in the MoO 3 modified glasses than those of WO 3 added glass. The tellurite glass containing 15 mol. % MoO 3 exhibits the bandwidth 1.7 times larger than the silica glass and the Raman gain coefficient is as high as 38 times that of the silica glass. Moreover, with the addition of P 2 O 5 in TeO 2-ZnO-Na 2 O-Nb 2 O 5-WO 3 (TZNNW) and TeO 2-ZnO-Na 2 O-Nb 2 O 5-MoO 3 (TZNNM) glass systems, the thermal stabilities can further be improved. On the other hand, the Raman bandwidth can further be broadened, especially in the TZNNMP glass system. The tellurite glass containing 15 mol. % MoO 3 and 15 mol. % P 2 O 5 shows the bandwidth 1.9 times larger than the silica glass and maintains high Raman gain coefficient which is as high as 37 times that of the silica glass, indicating this glass is a promising candidate as new gain media for broadband Raman fiber amplifier. V

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Section: A Effect Of Wo 3 Moo 3 and P 2 O 5 On The Physical And mentioning

confidence: 98%

Compositional effect of WO3, MoO3, and P2O5 on Raman spectroscopy of tellurite glass for broadband and high gain Raman amplifier

Yuan¹,

Yang²,

Chen³

et al. 2012

Journal of Applied Physics

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“…The strong and broad vibrations bands at 673 cm –1 and 756 cm –1 are derived from the stretching vibrations of [TeO 4 ] trigonal bipyramids with bridging oxygen atoms and the stretching vibrations of [TeO 3+1 ] and [TeO 3 ] pyramidal units associated with non-bridging oxygen (NBO) units, respectively [17]. The weak Raman peak at 880 cm –1 originates from the vibration of Nb-O bond in the NbO 6 unit [18]. Therefore, the maximum phonon energy of undoped TZNb glass is 880 cm –1 .…”

Section: Resultsmentioning

confidence: 99%

A Point Temperature Sensor Based on Upconversion Emission in Er3+/Yb3+ Codoped Tellurite-Zinc-Niobium Glass

Wu¹,

Tong²,

Liao³

et al. 2017

Sensors

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Er3+/Yb3+ codoped tellurite-zinc-niobium (TZNb) glass was prepared by the melt-quenching method and used for the construction of a point all-fiber temperature sensor. The glass thermal stability and network structural properties were studied by differential thermal analysis and Raman spectrum, respectively. High glass transition temperature is beneficial to widen the working temperature range. The dependence of fluorescence intensity ratio (FIR) of green upconversion emissions on the surrounding temperature from 276 to 363 K was experimentally investigated and the maximum temperature sensitivity is 95 × 10−4 K−1 at 363 K. Strong green upconversion emission, broad temperature measurement range and high sensitivity indicate this point temperature sensor is a promising optical device for application on optical temperature sensing.

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“…It can be concluded that lanthanum coexisting with fluorine more likely leads to crystallization in the fluorotellurite. Substitution of La 2 O 3 with Nb 2 O 5 , WO 3 , and MoO 3 improved the stability of the glass [15]. It is obvious that glass formation is not limited in the tellurite glass systems to materials having structures which are essentially similar and which can therefore be specified by a few all-embracing rules and conditions.…”

Section: Introductionmentioning

confidence: 96%

Influence of modifiers on the thermal characteristic of glasses of the TeO2–P2O5–ZnO–PbF2 system

Reben

Yousef

Grelowska

et al. 2016

J Therm Anal Calorim

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A series of fluorotellurite glasses based on 70TeO 2 -5M x O y -10P 2 O 5 -10ZnO-5PbF 2 in mol%, where M x O y = MgO, SrO, PbO, CdO, were prepared by the conventional melt-quenching method. The influence of modifiers on the thermal properties of glasses was analyzed. Thermal characteristics of glasses such as the transition temperature T g , the temperature for the crystallization onset T x , the maximum crystallization temperature T c , and the thermal stability parameter were determined by DSC method. Analysis of the local atomic interactions in the structure of glasses has been used to explain the course of the crystallization. The formation of crystalline phases was confirmed by X-ray diffraction analysis and SEM methods. Obtained results demonstrate that the new compositions lead to good thermal properties which make these glasses promising candidates for rare earth ions doping. Low value of the glass-forming tendency parameter K H indicates high tendency to devitrify. The kind of modifiers affects the crystallization process in fluorotellurite glasses.

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Effects of Nb<SUB>2</SUB>O<SUB>5</SUB>/WO<SUB>3</SUB> Codoping on Thermal Stability and Raman Spectral Properties of Tellurite Glasses

Cited by 4 publications

References 12 publications

Compositional effect of WO3, MoO3, and P2O5 on Raman spectroscopy of tellurite glass for broadband and high gain Raman amplifier

Compositional effect of WO3, MoO3, and P2O5 on Raman spectroscopy of tellurite glass for broadband and high gain Raman amplifier

A Point Temperature Sensor Based on Upconversion Emission in Er3+/Yb3+ Codoped Tellurite-Zinc-Niobium Glass

Influence of modifiers on the thermal characteristic of glasses of the TeO2–P2O5–ZnO–PbF2 system

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