Raman and impedance spectroscopy methods of P 2 O 5 –Li 2 O–Al 2 O 3 glass system doped with MgO

Jlassi, I.; Sdiri, N.; Elhouichet, Habib; Férid, Mokhtar

doi:10.1016/j.jallcom.2015.05.025

Cited by 47 publications

(11 citation statements)

References 47 publications

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“…The XRD results of all prepared bioglass specimens (Z2, Z4, Z6, Z8 and Z10) are shown in Figure 4. The samples show a broad hump at around 25 • indicating the lack of a long-range order in the structure and also confirm the amorphous nature of all bioglasses [37].…”

Section: Xrd Analysissupporting

confidence: 62%

“…Raman spectroscopy is used to get the information of various functional groups of both inorganic and organic phases on the molecular level [37] which act as a powerful analytical technique for biomedical applications and is used to study the structure of many bioglass samples [46,47]. Figure 8 illustrates the Raman spectra of ZnO incorporated phosphate glasses.…”

Section: Raman Spectramentioning

confidence: 99%

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Investigations on Physico-Mechanical and Spectral Studies of Zn2+ Doped P2O5-Based Bioglass System

et al. 2020

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ZnO incorporated phosphate based bioglasses with the composition xZnO–22Na2O–24CaO–(54-X)P2O5 (where X = 2, 4, 6, 8, 10 mol%) were developed by melt-quenching process. The physical, thermal and other structural properties of the glasses were studied in detail. By employing various characterization techniques such as X-ray powder diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Scanning electron microscopy (SEM) in addition to the energy dispersion spectroscopy (EDS), and Raman spectroscopy, the structural properties were analyzed. Interestingly, physical, thermal and mechanical properties were enhanced with the increasing content of zinc oxide up to 8 mol%, due to the presence of more ionic nature of P–O–Zn bonds than P–O–P bonds in the glass network. The FTIR and Raman analysis revealed the evolution of the phosphate network with increasing zinc concentration and leads to progressive depolymerisation of the glass network. The obtained results from the physical and structural properties of these zinc added calcium phosphate glasses support their potential to use as bone implant applications.

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Section: Xrd Analysissupporting

confidence: 62%

Section: Raman Spectramentioning

confidence: 99%

Investigations on Physico-Mechanical and Spectral Studies of Zn2+ Doped P2O5-Based Bioglass System

et al. 2020

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“…Furthermore, Szumera et al have detailed the effect of MoO 3 addition on silicate phosphate glasses using spectroscopic analysis such as FTIR, Raman and 31 P MAS-NMR. The molar content of SiO 2 decreases from 41.6 to 39.6 mol% and the P 2 O 5 proportion increases from 5.7 to 7.8 mol% [44]. The obtained results revealed the cleavage of oxygen bridges which suggests that acts as a network modifier [44].…”

Section: Introductionmentioning

confidence: 77%

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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“…Where, = exp , W is the activation barrier for diffusion-independent motion [33]. The σ dc is calculated from the obtained impedance data for anodic and cathodic loss resistances, R 2 and R 3 , using the relation [36],…”

Section: Warburg Coefficient and Loss Resistancesmentioning

confidence: 99%

Electrochemical impedance spectroscopy study of AgI–Ag₂O–MoO₃ glasses: understanding the diffusion, relaxation, fragility and power law behaviour

Tanujit

Asokan

2020

Philosophical Magazine

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Electrochemical Impedance Spectroscopy and Raman studies are performed on fast ion conducting, AgI-Ag 2 O-MoO 3 glasses, over a wide range of composition to understand the features of structure, ion migration and their correlation. These features essentially involve diffusion and relaxation. The coefficients associated with diffusion process, especially, the diffusion coefficient, diffusion length and relaxation time has been determined by applying Nguyen-Breitkopf method. Besides, by tuning the concentration of the constituents, it is possible to obtain samples those exhibit two important structural characteristics: Fragility and Polymeric phase formation. The present study essentially addresses these issues and endeavors to figure out the corroboration among them. The relaxation behavior, when scrutinized in the light of Diffusion Controlled Relaxation model, ascertains the fragility threshold which is also identified as the margin between the two types of polymeric phases. Simultaneously, it fathoms into the equivalent circuitry, its elements and their behavioral changes with above mentioned features.The power law behavior of A.C. conductivity exhibits three different non-Jonscher type dispersive regimes along with a high frequency plateau. The sub-linearity and super-linearity remain significantly below and above the Jonscher's carrier transport limit, 0.5 ≤ n ≤ 0.9. Finally, by observing the behavior of the crossover between these sun-linear and super-linear (SLPL) regime, an intuitive suggestion has been proposed for the appearance of SLPL: oxygen vacancy formation at higher frequency.

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Raman and impedance spectroscopy methods of P 2 O 5 –Li 2 O–Al 2 O 3 glass system doped with MgO

Cited by 47 publications

References 47 publications

Investigations on Physico-Mechanical and Spectral Studies of Zn2+ Doped P2O5-Based Bioglass System

Investigations on Physico-Mechanical and Spectral Studies of Zn2+ Doped P2O5-Based Bioglass System

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

Electrochemical impedance spectroscopy study of AgI–Ag₂O–MoO₃ glasses: understanding the diffusion, relaxation, fragility and power law behaviour

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Raman and impedance spectroscopy methods of P 2 O 5 –Li 2 O–Al 2 O 3 glass system doped with MgO

Cited by 47 publications

References 47 publications

Investigations on Physico-Mechanical and Spectral Studies of Zn2+ Doped P2O5-Based Bioglass System

Investigations on Physico-Mechanical and Spectral Studies of Zn2+ Doped P2O5-Based Bioglass System

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

Electrochemical impedance spectroscopy study of AgI–Ag2O–MoO3 glasses: understanding the diffusion, relaxation, fragility and power law behaviour

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Product

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Electrochemical impedance spectroscopy study of AgI–Ag₂O–MoO₃ glasses: understanding the diffusion, relaxation, fragility and power law behaviour