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Structure, thermal ...
Structure, thermal analysis and optical properties of lithium tungsten-titanophosphate glasses
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- Es-Soufi, H. (författare)
- Univ Moulay Ismail, Equipe Physicochim Mat Condensee, PCMC, Fac Sci Meknes, Meknes, Morocco.
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- Bih, L. (författare)
- Univ Moulay Ismail, Equipe Physicochim Mat Condensee, PCMC, Fac Sci Meknes, Meknes, Morocco.
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- Manoun, B. (författare)
- Univ Hassan 1Er, Lab Sci Mat Mat & Modelisat LS3M, Settat 26000, Morocco.;Mohammed VI Polytech Univ, Mat Sci & Nanoengn Dept MSN, Lot 660 Hay Moulay Rachid, Ben Guerir 43150, Morocco.
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- Lazor, P. (författare)
- Uppsala universitet,Mineralogi, petrologi och tektonik
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Univ Moulay Ismail, Equipe Physicochim Mat Condensee, PCMC, Fac Sci Meknes, Meknes, Morocco Univ Hassan 1Er, Lab Sci Mat Mat & Modelisat LS3M, Settat 26000, Morocco.;Mohammed VI Polytech Univ, Mat Sci & Nanoengn Dept MSN, Lot 660 Hay Moulay Rachid, Ben Guerir 43150, Morocco. (creator_code:org_t)
- Elsevier, 2017
- 2017
- Engelska.
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Ingår i: Journal of Non-Crystalline Solids. - : Elsevier. - 0022-3093 .- 1873-4812. ; 463, s. 12-18
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- A melt-quenching method is used to prepare homogeneous glasses inside the 20Li(2)O-(50-x)Li2WO4-xTiO(2)-30P(2)O(5) (x = 0, 5, 8,10 and 15 mol%) system. The amorphous and glassy states of the glasses are evidenced by the X-ray diffraction and differential scanning calorimetry (DSC) analysis, respectively. The glasses were found to be colorless. The determined parameters for the glasses such as density, molar volume and glass transition temperature (T-g) depend strongly on the chemical composition of the glasses. The density and T-g are found to decrease and increase with TiO2 content, respectively. Infrared (IR) spectroscopy is used to characterize their structural approach. This technique has allowed the identification of different phosphate structural units mainly pyrophosphate and metaphosphate in their structure. From the absorption edge studies, the values of the optical band gap, E-g, and Lirbach energy, Delta E, were evaluated. The optical band gap is found to depend on the glass composition and it decreases as the content of the TiO2 increases. (C) 2017 Elsevier B.V. All rights reserved.
Ämnesord
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Geokemi (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Geochemistry (hsv//eng)
Nyckelord
- Phosphate
- Glasses
- DSC
- IR spectroscopy
- Optical properties
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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