Electrical conductivity of V2O5Sb2O3TeO2 glasses

Mori, Hayato; Kitami, Takashi; Sakata, H.

doi:10.1016/0022-3093(94)90132-5

Cited by 93 publications

(57 citation statements)

References 31 publications

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“…The values of g p were 21.0-36.4 (Table 2), larger than those for V 2 O 5 -Bi 2 O 3 doped with BaTiO 3 (7.05-7.60) [44]. Such large values are of the same order as those for V 2 O 5 -Sb 2 O 3 -TeO 2 glasses (18-24) [45] and V 2 O 5 -NiO-TeO 2 glasses (19-23) [46]. Thus, we conclude there is a strong electron-phonon interaction for the present glasses.…”

Section: Conduction Mechanismsupporting

confidence: 51%

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

El‐Desoky

Kashif

2002

phys. stat. sol. (a)

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The electrical properties of xCaO–(20 — x)BaO–20Fe2O3–60P2O5 glasses with x = 0, 5, 10, 15 and 20 mol% have been studied in the frequency range 400 Hz–200 kHz and over a temperature range 323–593 K. The ac conductivity as a function of temperature was divided into two domains, one where the absolute magnitude of the ac conductivity was close to the dc conductivity and another where it was larger than the dc conductivity. At the same temperature, the dc conductivity varied only slightly in glasses with different CaO and BaO content. It is concluded that the conductivity in these mixed CaO and BaO iron phosphate glasses is electronic and depends upon the Fe2+/(Fe2+ + Fe3+) ratio. In the high‐temperature region above θD/2 (where θD is the Debye temperature) the Mott model of small polaron hopping (SPH) between nearest neighbours is consistent with the conductivity data, while at low temperature (below θD) the Greaves intermediate variable‐range hopping (VRH) model is found to be appropriate. The electrical conduction of the glasses is confirmed to be non‐adiabatic SPH. Mössbauer spectral analysis indicates the presence of both Fe2+ and Fe3+ ions.

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Section: Conduction Mechanismsupporting

confidence: 51%

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

El‐Desoky

Kashif

2002

phys. stat. sol. (a)

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“…V 2 O 5 -P 2 O 5 [10], V 2 O 5 -NiO-TeO 2 [4] and V 2 O 5 -MnO-TeO 2 [11], glasses are highly conductive. Hopping conduction of these glasses was generally known to be adiabatic for V 2 O 5 content above 50 mol%, while, for V 2 O 5 < 50 mol% conduction became non-adiabatic [12]. The effect of the second transition metal oxide on the conductivity was reported [4,11] and the glasses containing two kinds of transition metal ions, e.g.…”

Section: Introductionmentioning

confidence: 98%

“…V 2 O 5 -NiO-TeO 2 [4] and V 2 O 5 -MnOTeO 2 [11] systems, have become the center of this conductivity study. These glasses showed relatively high conductivities of $10 À4 S cm À1 above 400 K [12]. Highly conductive tellurite glasses containing TMO have a potential applicability as electrical devices (e.g.…”

Section: Introductionmentioning

confidence: 99%

Characterization and transport properties of V2O5–Fe2O3–TeO2 glasses

El‐Desoky

2005

Journal of Non-Crystalline Solids

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“…The concentration of V ion (N V ) and Ag ion + (N Ag ) per unit volume was calculated by the relation [34] …”

Section: Conductivitymentioning

confidence: 99%

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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Electrical conductivity of V2O5Sb2O3TeO2 glasses

Cited by 93 publications

References 31 publications

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

Electrical Conductivity in Mixed Calcium and Barium Iron Phosphate Glasses

Characterization and transport properties of V2O5–Fe2O3–TeO2 glasses

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

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