Dynamics of Ag+ ions and immobile salt effect in CdI2 doped silver phosphate glasses

Kabi, Soumyajyoti; Ghosh, A.

doi:10.1016/j.ssi.2011.01.012

Cited by 31 publications

(17 citation statements)

References 26 publications

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“…Similar to other phosphate glasses, the present samples also exhibited the main characteristic active vibrational modes of phosphate network in the range 1400 -600 cm -1 . The bands at 1180 cm -1 are assigned to the vibrations of PO 3 2-groups at the end of chains [25]. The bands observed at < 600 cm -1 are related to phosphate network bending vibrations [26].…”

Section: Resultsmentioning

confidence: 99%

“…Amongst wide variety glass systems, particularly, phosphate glasses are very important materials, because of their high thermal expansion coefficients, low optical dispersions and low glass transition temperature [1][2][3]. Phosphate glasses become particularly attractive in the field of optical technology in view of the fact that the fundamental optical absorption edge shift that would be caused by the introduction of metal oxide is the least in the case of phosphate glasses [4].…”

Section: Introductionmentioning

confidence: 99%

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Influence of Various Glass Compositions on Physical and Spectroscopic Properties of Cao-Pb3O4-Zno-P2O5 Glass System

Sastry¹,

Rao²

2015

IJIRSET

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ABSTRACT:A series of 20CaO-10ZnO-59.9P 2 O 5 -10Pb 3 O 4 -0.1x, (x= V 2 O 5 , Cr 2 O 3 , MnO and CuO) glasses was prepared by melt quench technique. Spectroscopic properties of the prepared glass systems were investigated using XRay diffraction, Ultra-Violet (UV) spectroscopy, Differential Scanning Calorimetry (DSC), Electron Paramagnetic Resonance (EPR -X band), Fourier Transform Infra Red (FTIR) spectroscopy and Raman spectroscopy. Present investigation is useful to study the effect of glass composition on the optical, thermal, physical properties and symmetry of the prepared glasses. Various physical properties for all the glasses were measured. X-ray diffraction of glass samples was carried to check its amorphous nature. From EPR spectra, the spin-Hamiltonian parameters were calculated and these parameters were influenced by the change in glass composition for different transition metal ions. The FTIR spectral investigations of glasses revealed characteristic vibrations of PO 4 3-units. The Raman spectra of all glass samples have displayed different spectral bands, and intensity of these bands. The results showed that the network structure of these glass samples is found to be change from glass to glass.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of Various Glass Compositions on Physical and Spectroscopic Properties of Cao-Pb3O4-Zno-P2O5 Glass System

Sastry¹,

Rao²

2015

IJIRSET

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“…ion is known to bond with non-bridging oxygen in the place of Ag ? ion by adding iodide into the system (Kabi and Ghosh 2011). These replaced Ag ?…”

Section: Resultsmentioning

confidence: 99%

A new silver ion conducting SbI3–Ag4P2O7 nanocomposite solid electrolyte

Suthanthiraraj

Sarumathi

2012

Appl Nanosci

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This paper presents an investigation on a new series of silver ion conducting nanocomposite materials of silver pyrophosphate-based solid electrolytes with various amounts of antimony iodide. The detailed electrical conductivity studies carried out by impedance spectroscopic analysis in the frequency range from 20 Hz to 1 MHz have shown that silver ionic conductivity attains a maximum value of 4.1 9 10-4 S cm-1 at room temperature for the typical composition having 60 mol% of SbI 3. Powder samples characterized by X-ray diffraction, Fourier transform infrared spectroscopy, differential scanning calorimetric analysis and silver ionic transport studies were identified to indicate the existence of AgI, in addition to certain new phases in all the different compositions of the system. The conduction channel for Ag ? ions across phosphate network was found to get expanded by the presence of iodide ion. The formation of P-O-M (M=Sb 3?) within the crystal structure is also favoured, where Sb 3? ions may serve as ionic cross-links between non-bridging oxygen of different phosphate groups. The field emission scanning electron microscopic investigations of their microstructures have suggested the presence of nanocomposites, leading to the observed electrical conductivity data coupled with many interesting features closely related to the particle size and practical application as solid electrolyte for the fabrication of solid-state battery at ambient conditions.

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“…While this expression contains the key factors describing the conductivity, it is challenging to decouple the compositional effects in the mobility and charge carrier density so as to clarify which of the two dominates the material's properties [27][28][29][30] . Therefore one finds in the literature two different interpretations of the influence of the salt doping in phosphate glasses 9 : the "weak-electrolyte" approach posits that the enhancement in conductivity is due to an increase in the fraction of effective charge carriers 7,11,17,19,[31][32][33] (for example, Rodrigues et al report an increase of approximately 5 orders of magnitude in by adding AgI to AgPO3 glasses 17 ) while the ionic mobility is practically composition independent (Clement et al report a value of 6 x 10 -4 cm 2 .V -1 .s -1 at room temperature, independent of silver iodide content in AgI-AgPO3 glasses 34 ); alternatively, according to the "strong-electrolyte" model, the augment in conductivity is rooted in increased charge carrier mobility, since ~1 2,3, [35][36][37][38] .…”

Section: Introductionmentioning

confidence: 99%

Decoupling mobility and charge carrier concentration in AgR-AgPO3 glasses (R = Cl, Br, I)

2019

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Halide-containing silver phosphate glasses have been used as model systems for the study of the ionic conductivity of oxide glasses for the past 50 years, mostly due to the massive increase in conductivity observed as the halide concentration is increased, even if the molar ratio of silver is kept constant. Furthermore there is still no consensus if the increased conductivity is due to an enhancement of the number of effective charge carriers (glass as a weak electrolyte) or a higher charge carrier mobility (glass as a strong electrolyte). In this work we investigate the electrical properties of silver-halide-containing silver metaphosphate glasses through Impedance Spectroscopy. We find the glasses to follow the "canonical scaling", which coupled with the diffusional nature of the conductivity allows us to show that the number of effective charge carriers remains constant with increasing halide concentration, and that the conductivity follows the same scaling as the ionic mobility.

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Dynamics of Ag+ ions and immobile salt effect in CdI2 doped silver phosphate glasses

Cited by 31 publications

References 26 publications

Influence of Various Glass Compositions on Physical and Spectroscopic Properties of Cao-Pb3O4-Zno-P2O5 Glass System

Influence of Various Glass Compositions on Physical and Spectroscopic Properties of Cao-Pb3O4-Zno-P2O5 Glass System

A new silver ion conducting SbI3–Ag4P2O7 nanocomposite solid electrolyte

Decoupling mobility and charge carrier concentration in AgR-AgPO3 glasses (R = Cl, Br, I)

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Dynamics of Ag+ ions and immobile salt effect in CdI2 doped silver phosphate glasses

Cited by 31 publications

References 26 publications

Influence of Various Glass Compositions on Physical and Spectroscopic Properties of Cao-Pb3O4-Zno-P2O5 Glass System

Influence of Various Glass Compositions on Physical and Spectroscopic Properties of Cao-Pb3O4-Zno-P2O5 Glass System

A new silver ion conducting SbI3–Ag4P2O7 nanocomposite solid electrolyte

Decoupling mobility and charge carrier concentration in AgR-AgPO3 glasses (R = Cl, Br, I)

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Decoupling mobility and charge carrier concentration in AgR-AgPO3 glasses (R = Cl, Br, I)