IR-spectral study of vanadate vitreous systems

Dimitriev, Y.; Dimitrov, V.; Arnaudov, M.; Topalov, D.

doi:10.1016/0022-3093(83)90417-9

Cited by 194 publications

(88 citation statements)

References 36 publications

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“…The infrared spectrum of the sample containing 0.5 tool % Fe203, heat treated for 0.5 h, the band at 1320 cm-1 is due to BO4 vibration [93. The band at 1000 cm -~ is due to the terminal V-O stretching modes [14,15], and indicates the formation of isolated bonds and the presence of the symmetric V20 4-and VO 3-groups [16,17]. The band at 860cm -1 is due to V-O-V stretching vibration [14,18], whilst that at 600 cm-1 is assigned to bending modes of the PO4 group [19].…”

Section: Resultsmentioning

confidence: 99%

Structural studies of some V2O5-P2O5-B2O3-Fe2O3 glass systems

et al. 1992

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X-ray diffraction and infrared measurements were performed on vanadium borophosphate glass containing different amounts of iron ranging from 0-7.5 mol % and heat treated at 300 ~ for various times. The structure and phase separation could be determined for each glass composition. V205 was the main precipitated phase in all heat-treated samples, and its amount was dependent on the heat-treatment time and Fe203 content. Also FeP was detected in samples heat treated for 24 h. The infrared measurements showed the presence of both V 4+ and V ~+. The symmetry of V20 4-and VO]-groups was found to increase with increasing Fe203 content. It was also found that some P04 changed to BO3, forming a non-bridging oxygen.

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Section: Resultsmentioning

confidence: 99%

Structural studies of some V2O5-P2O5-B2O3-Fe2O3 glass systems

et al. 1992

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“…This is assigned to VO 4 3− stretching mode. Dimitriev et al [13] reported that the band at~1,000 cm −1 in Ag 2 O-V 2 O 5 glassy system is due to bonding of Ag + ions with the unbridged double-bonded oxygen.…”

Section: Methodsmentioning

confidence: 98%

Silver-doped silver vanadate glass composite electrolyte: structure and an investigation of electrical properties

Masoud

Mouśa

2014

Ionics

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Structural and electrical properties of the ternary ionic-electronic conducting glass system xAgI-(1 − x)[0.67Ag 2 O-0.33V 2 O 5 ], where x=0.4, 0.5, 0.6, 0.7, and 0.8 were studied for emphasizing the influence of silver iodide concentration on the transport properties of the based vanadate glasses. The glasses were prepared by melt quenching technique and characterized using X-ray diffraction (XRD), FTIR spectra, and differential thermal analysis (DTA). Electrical conductivity (σ), dielectric constant (ε′), dielectric loss (ε″), and impedance spectra (Z′-Z″) were studied for all samples. All glasses showed a mixed ionic-electronic conductance with a high ionic conductivity for the sample with x=0.7. The electronic contribution to the total conductivity and the ionic (t i ) and electronic transport numbers (t e ) were determined for each glass sample using Wagner's DC polarization technique. The variation in electrical properties with each of composition, temperature, and frequency was analyzed and discussed.

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“…The band at position 920 cm −1 is assigned to VO 3 terminal stretching of the pyrovanadate ions. The intensity and position of this band start increasing slightly with [20]. The band at 1,020 cm −1 is related to the vibrations of the non-bridging V=O of the VO 5 groups [21].…”

Section: Dscmentioning

confidence: 93%

Characterization and transport properties of 10BaO–xAg2O–(85-x)V2O5–5TeO2 glass system

Pant

Kanchan

Sharma

2010

Ionics

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Silver-based quaternary glasses were prepared by splat quenching technique. X-ray diffraction and differential scanning calorimetry were done for confirming their amorphous nature. The conductivity of the glasses was measured in the frequency range from 1 Hz to 32 MHz from room temperature to 373 K. Conductivity data, which obeys the Arrhenius type behavior, shows minimum at 30 mol% Ag 2 O, suggesting that the conductivity mechanisms are different above and below these two regions. The minimum in conductivity is accompanied by an inverse behavior of activation energy. Experimental data suggests that a polaron hopping mechanism operates in the electronically conducting domain of 20≤×≤30, and an interstitial pair mechanism operates in the ionically conducting domain of 35≤×≤55.

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IR-spectral study of vanadate vitreous systems

Cited by 194 publications

References 36 publications

Structural studies of some V2O5-P2O5-B2O3-Fe2O3 glass systems

Structural studies of some V2O5-P2O5-B2O3-Fe2O3 glass systems

Silver-doped silver vanadate glass composite electrolyte: structure and an investigation of electrical properties

Characterization and transport properties of 10BaO–xAg2O–(85-x)V2O5–5TeO2 glass system

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