Optical properties and radiative rates of Nd3+ doped zinc-sodium phosphate glasses

El-Maaref, A.A.; Badr, Shimaa M.; Shaaban, Kh. S.; Wahab, E. A. Abdel; El-Okr, Mohamed

doi:10.1016/j.jre.2018.06.006

Cited by 61 publications

(18 citation statements)

References 57 publications

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“…Nine distinct absorption bands are observed at 431, 473, 527, 586, 628, 684, 749, 805 and 878 nm corresponding to electronic transition configuration within multiples of the 4f 3 from energy ground state ( 4 I 9/2 ) to the exited states: ( 2 P 1/2 + 2 D 5/2 ), ( 2 K 15/2 + 2 D 3/2 + 2 G 9/2 + 2 G 11/2 ), ( 2 K 13/2 + 4 G 7/2 + 4 G 9/2 ), ( 2 G 7/2 + 4 H 5/2 ), ( 2 H 11/2 ), ( 4 F 9/2 ), ( 4 F 7/2 + 4 S 3/2 ), ( 4 F 5/2 + 2 H 9/2 ), ( 4 F 3/2 ), respectively. As shown in the figure, the peak position of all absorption bands varies only slightly (±1 nm) and is within the range of those reported by many authors [9,[16][17][18][19][20] thus confirming a strong shielding of 4f orbital from the outside ligands. Due to UV absorption edge around 400 nm, absorption bands at wavelength less than 400 nm that appears in many glasses [19, 21-23] are blocked.…”

Section: Absorption Spectrasupporting

confidence: 87%

Effect of Nd₂O₃ and Na₂O concentration on physical and spectroscopic properties of TeO₂–Bi₂O₃–ZnO–Na₂O–Nd₂O₃ glasses

Marzuki

Pramuda²,

Fausta

2020

Mater. Res. Express

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Two series of tellurite glasses with molar compositions of (55TeO 2 -2Bi 2 O 3 -(41-x) ZnO-2Na 2 O-xNd 2 O 3 (x=0.5, 1.0, 1.5, 2.0 and 2.5) and 55TeO 2 -2Bi 2 O 3 -(41-x) ZnO-xNa 2 O-2Nd 2 O 3 (x=1.0, 2.0, 3.0, 4.0, 5.0) were fabricated using melt quenching technique. Based on the measured densities, refractive indices and absorption spectra, physical and spectroscopic properties of these two-glass series are evaluated and compared. Whereas substitution of ZnO by Nd 2 O 3 causes the values of density and refractive index increase, the substitution of ZnO by Na 2 O has been shown to impact the glass density and refractive index in the opposite manner. Molar volume of both series increases with an increase of either Nd 2 O 3 or Na 2 O concentrations. In this regard, a dynamical model explaining the density and molar volume was proposed. Additionally, Judd-Ofelt theory was applied in order to predict the physical and laser properties of the two glasses series as a function of glass compositions, i.e., Judd-Ofelt parameters Ω t (t=2, 4, 6), branching ratios (β), calculated lifetimes (τ), the emission to exited state absorption intensity ratio (A em /A ESA ) and spectroscopic quality χ=Ω 4 /Ω 6 . Equations to relate χ with branching ratios for laser transitions 4 F 3/2 to 4 I J' (with J′ =9/2, 11/2, 13/2 and 15/2) were also derived.

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Section: Absorption Spectrasupporting

confidence: 87%

Effect of Nd₂O₃ and Na₂O concentration on physical and spectroscopic properties of TeO₂–Bi₂O₃–ZnO–Na₂O–Nd₂O₃ glasses

Marzuki

Pramuda²,

Fausta

2020

Mater. Res. Express

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“…Optical absorption, particularly the absorption edge, is useful for the investigation of optically-induced transitions and for getting information about the band gap energy [4,10,11,14,16,37,41]. This parameter is very interesting for the applications of the materials to be studied.…”

Section: Uv-vis Spectroscopymentioning

confidence: 99%

“…• n: a constant which determines the type of the optical transition. For direct allowed transition n = 2 and in the case of indirect allowed transition n= 1 2 [4,10,11,14,16,37,41].…”

Section: αν ðþ¼mentioning

confidence: 99%

“…For glassy materials, the indirect transitions are valid according to Tauc relations [4,10,11,14,16,37,41]. Figure 4 represents the variation (αhν) 2 versus photon energy (hν) for (0.9-x) NaPO 3 -xSiO 2 -0.1ZnO (0 ≤ x ≤ 0.1 mol) series glasses.…”

Section: αν ðþ¼mentioning

confidence: 99%

“…Among the wide class of phosphate glasses, ZnO-based glasses have low glass transition temperature in the region of 280-380°C and significantly high chemical durability [14].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structural and Calorimetric Studies of Zinc, Magnesium and Manganese Based Phosphate and Phosphate-Silicate Glasses

Omrani¹,

Jemal²,

Khattech³

et al. 2020

Contemporary Topics About Phosphorus in Biology and Materials

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Glasses of the (50-x/2)Na 2 O-xMO-(50-x/2)P 2 O 5 (M = Zn, Mg or Mn) (0 ≤ x ≤ 33 mol%), (50-x)Na 2 O-xMO-50P 2 O 5 (M = Zn, Mn) (0 ≤ x ≤ 33 mol%), and (0.9-x) NaPO 3 -xSiO 2 -0.1ZnO (0 ≤ x ≤ 0.1 mol) were prepared by the melt quenching technique. Samples were investigated by means of X-ray diffraction, Archimede's method, ellipsometry, Fourier-transformed infrared (FTIR), Raman, 31P solid state magic angle spinning nuclear magnetic resonance (MAS-NMR), UV-visible spectroscopy and calorimetry. For zinc, manganese and magnesium phosphate glasses, the increase in density with the addition of MO oxide suggests the compactness of the vitreous network. For zinc phosphate silicate glasses, the variations of density and refractive index were attributed to the structural changes when SiO 2 oxide is progressively introduced. The increase in the glass transition temperature (Tg) reflects an increase in the cross-link strength of the structure as MO and SiO 2 oxides are gradually incorporated. For all glass composition, spectroscopic investigations revealed the depolymerization of metaphosphate chains (Q 2 ) allowing the formation of phosphate dimers (Q 1 ). Calorimetric dissolution shows that the dissolution is endothermic for lower MO content and become exothermic when x rises. For (50-x/2)Na 2 O-xZnO-(50-x/2)P 2 O 5 (0 ≤ x ≤ 33 mol%) glasses, the formation enthalpy increases with the incorporation of ZnO oxide.

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Mechanical and radiation-shielding properties of B2O3–P2O5–Li2O–MoO3 glasses

et al. 2020

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Optical properties and radiative rates of Nd3+ doped zinc-sodium phosphate glasses

Cited by 61 publications

References 57 publications

Effect of Nd₂O₃ and Na₂O concentration on physical and spectroscopic properties of TeO₂–Bi₂O₃–ZnO–Na₂O–Nd₂O₃ glasses

Effect of Nd₂O₃ and Na₂O concentration on physical and spectroscopic properties of TeO₂–Bi₂O₃–ZnO–Na₂O–Nd₂O₃ glasses

Structural and Calorimetric Studies of Zinc, Magnesium and Manganese Based Phosphate and Phosphate-Silicate Glasses

Mechanical and radiation-shielding properties of B2O3–P2O5–Li2O–MoO3 glasses

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Optical properties and radiative rates of Nd3+ doped zinc-sodium phosphate glasses

Cited by 61 publications

References 57 publications

Effect of Nd2O3 and Na2O concentration on physical and spectroscopic properties of TeO2–Bi2O3–ZnO–Na2O–Nd2O3 glasses

Effect of Nd2O3 and Na2O concentration on physical and spectroscopic properties of TeO2–Bi2O3–ZnO–Na2O–Nd2O3 glasses

Structural and Calorimetric Studies of Zinc, Magnesium and Manganese Based Phosphate and Phosphate-Silicate Glasses

Mechanical and radiation-shielding properties of B2O3–P2O5–Li2O–MoO3 glasses

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Effect of Nd₂O₃ and Na₂O concentration on physical and spectroscopic properties of TeO₂–Bi₂O₃–ZnO–Na₂O–Nd₂O₃ glasses

Effect of Nd₂O₃ and Na₂O concentration on physical and spectroscopic properties of TeO₂–Bi₂O₃–ZnO–Na₂O–Nd₂O₃ glasses