Synthesis and characterization of M2O–MgO–WO3–P2O5 (M=K,Rb,Cs) glass system

Mączka, M.; Macalik, B.; Hanuza, J.; Bukowska, E.

doi:10.1016/j.jnoncrysol.2006.09.009

Cited by 20 publications

(13 citation statements)

References 32 publications

(68 reference statements)

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“…The behavior of studied glasses is close to that of A 2 MgWP 2 O 10 (A = K, Cs, Rb) [10]. The stability of the glasses devote them a great importance for future applications.…”

Section: Density Thermal Stabilitysupporting

confidence: 55%

Preparation and characterization of phosphate glass system A₂MnMP₂O₁₀(A = Li, Na, K) and (M = W, Mo)

Moutataouia¹,

Lamire²,

Taïbi³

2013

MATEC Web of Conferences

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Abstract. New materials based glassy phosphates and transition elements A 2 MnMP 2 O 10 (A = Li, Na, K) and (M = Mo, W) were prepared by direct fusion of the mixture of the reactants followed by quenching in the air. Analysis by X-ray diffraction showed that the obtained materials are amorphous. Differential scanning calorimetry DSC was used to determine the glass transition (Tg) and crystallization (Tc) temperatures. The thermal stability of tungsten glasses is higher than that of molybdenum ones. Tungsten plays, certainly, a role of cross-linking polyphosphate groups by creating more covalent new bonds P-O-W and W-O-W. Moreover, it has been shown that lithium glasses are more stable than sodium and potassium, probably due to the potassium hygroscopy. Raman analysis confirms that the studied glasses have similar structures and the predominant structural units are PO 4 , P 2 O 7 and MO 6 polyhedra (M = W, Mo, Mn).

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“…The behavior of studied glasses is close to that of A 2 MgWP 2 O 10 (A = K, Cs, Rb) [10]. The stability of the glasses devote them a great importance for future applications.…”

Section: Density Thermal Stabilitysupporting

confidence: 55%

Preparation and characterization of phosphate glass system A₂MnMP₂O₁₀(A = Li, Na, K) and (M = W, Mo)

Moutataouia¹,

Lamire²,

Taïbi³

2013

MATEC Web of Conferences

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“…This paper is a part of more general study concerning the synthesis, structure, elastic properties and crystallization behavior of the M 2 MgWO 2 (PO 4 ) 2 (M = K, Rb, Cs) phosphates that have structures related to famous optical non-linear material KTiOPO 4 (KTP). In the previous work IR, Raman, X-ray, DTA and conductivity studies of the M 2 MgWO 2 (PO 4 ) 2 (M = K, Rb, Cs) glasses were reported [8]. These studies revealed that the Cs 2 MgWO 2 (PO 4 ) 2 glass (CsMWPO) crystallizes partially when annealed above T g giving transparent nanocomposite [8].…”

Section: Introductionmentioning

confidence: 96%

“…In the previous work IR, Raman, X-ray, DTA and conductivity studies of the M 2 MgWO 2 (PO 4 ) 2 (M = K, Rb, Cs) glasses were reported [8]. These studies revealed that the Cs 2 MgWO 2 (PO 4 ) 2 glass (CsMWPO) crystallizes partially when annealed above T g giving transparent nanocomposite [8]. In the present work we report temperature-dependent Brillouin, heat capacity, Raman scattering and transmission electron microscopy studies of the nanostructuring process in the CsMWPO glass.…”

Section: Introductionmentioning

confidence: 99%

Studies of nanostructuring in cesium magnesium tungsten phosphate glass

Mączka

Kępiński

Hanuza

et al. 2007

Journal of Non-Crystalline Solids

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Cs 2 O-MgO-WO 3 -P 2 O 5 glass was examined in a broad temperature range using heat capacity, Raman and Brillouin scattering methods. The main aim was to study the elastic properties of the as-prepared glass, the mechanism of nanostructuring in this material and the influence of nanostructuring on its elastic properties. It was shown that this glass exhibits prominent nanocrystallization during thermal treatment, giving Cs(Mg 0.25 W 1.75 )O 6 nanocrystals with the size of 4-10 nm. The crystallization process was hindered when crystallinity reached about 14 ± 0.6 wt%. The origin of this behavior was discussed. It was also demonstrated that the elastic properties are largely improved by nanocrystallization.

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“…Recently, some electrochromic oxide semiconductors have been reported. [21][22][23][24][25][26][27][28][29][30][31] In these materials, the color change occurs when photons excite electrons into the conduction bands or trap levels, and these electron transitions induce color change. Therefore, some researchers speculated that these electrochromic materials could be used in energy-storable solar cells.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of photochromic nanoparticles and determination of the mechanism of photochromism

et al. 2016

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Photochromic nanoparticles of zinc-silicon oxide were synthesized using plasma enhanced chemical vapor deposition. These particles turned black upon irradiating with ultraviolet light. We investigated this phenomenon using density functional theory calculations. Silicon inclusions create trap levels and oxygen defects that reduce the ionization potential of ZnO. This forms a quantum potential between ZnO and zinc-silicon oxide, and the excited electron is stable. Because oxygen defects also increase the bond overlap population between the zinc atoms in a ZnO crystal, they introduce further defects and help in the formation of quantum potentials. Growth of a perfect crystal of ZnO prevents the formation of oxygen defects, which is not desirable for photochromism.

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Synthesis and characterization of M2O–MgO–WO3–P2O5 (M=K,Rb,Cs) glass system

Cited by 20 publications

References 32 publications

Preparation and characterization of phosphate glass system A₂MnMP₂O₁₀(A = Li, Na, K) and (M = W, Mo)

Preparation and characterization of phosphate glass system A₂MnMP₂O₁₀(A = Li, Na, K) and (M = W, Mo)

Studies of nanostructuring in cesium magnesium tungsten phosphate glass

Synthesis of photochromic nanoparticles and determination of the mechanism of photochromism

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Synthesis and characterization of M2O–MgO–WO3–P2O5 (M=K,Rb,Cs) glass system

Cited by 20 publications

References 32 publications

Preparation and characterization of phosphate glass system A2MnMP2O10(A = Li, Na, K) and (M = W, Mo)

Preparation and characterization of phosphate glass system A2MnMP2O10(A = Li, Na, K) and (M = W, Mo)

Studies of nanostructuring in cesium magnesium tungsten phosphate glass

Synthesis of photochromic nanoparticles and determination of the mechanism of photochromism

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Product

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Preparation and characterization of phosphate glass system A₂MnMP₂O₁₀(A = Li, Na, K) and (M = W, Mo)

Preparation and characterization of phosphate glass system A₂MnMP₂O₁₀(A = Li, Na, K) and (M = W, Mo)