Compositional effect on the electrical properties of V2O 5-P2O5-WO3 system

Woon Jin Chung, Kyoung Hoon Kim, Yong Gyu Choi, Dong Wook Shin

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Glass-forming range and electrical conduction properties of V 2O5-P2O5-WO3 ternary system were investigated. The glass-forming ability of this system was quite good within a wide compositional area where the P2O5 content ranges from 20 to 80 mol%. This glass exhibited a high dc-conductivity up to 6.71 × 10-4 Ω/cm at 473 K. The variation of conductivity (log(σT)) of the glass with temperature (1/T) exhibited a linear relationship, which suggests electrical conduction through the small polaron hopping above room temperature. Compositional effect on the conductivity was studied upon varying WO3 and P2O5 concentration. Substitution of V2O5 with P 2O5 resulted in a decrease of the conductivity with the increase of activation energy, while substitution of WO3 showed relatively little effect on the activation energy. Structural modification along with the valence state change of vanadium and tungsten ions were discussed in connection with Raman spectroscopy and X-ray photoelectron spectroscopy analysis.

Original languageEnglish
Pages (from-to)2292-2296
Number of pages5
JournalJournal of the American Ceramic Society
Volume93
Issue number8
DOIs
StatePublished - 2010 Aug 1

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phosphorus pentoxide
Electric properties
Glass
Substitution reactions
Activation energy
Gene Conversion
Vanadium
Tungsten
Ternary systems
Raman spectroscopy
X ray photoelectron spectroscopy
Ions
Temperature

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Chung, Woon Jin ; Kim, Kyoung Hoon ; Choi, Yong Gyu ; Shin, Dong Wook. / Compositional effect on the electrical properties of V2O 5-P2O5-WO3 system. In: Journal of the American Ceramic Society. 2010 ; Vol. 93, No. 8. pp. 2292-2296.
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abstract = "Glass-forming range and electrical conduction properties of V 2O5-P2O5-WO3 ternary system were investigated. The glass-forming ability of this system was quite good within a wide compositional area where the P2O5 content ranges from 20 to 80 mol{\%}. This glass exhibited a high dc-conductivity up to 6.71 × 10-4 Ω/cm at 473 K. The variation of conductivity (log(σT)) of the glass with temperature (1/T) exhibited a linear relationship, which suggests electrical conduction through the small polaron hopping above room temperature. Compositional effect on the conductivity was studied upon varying WO3 and P2O5 concentration. Substitution of V2O5 with P 2O5 resulted in a decrease of the conductivity with the increase of activation energy, while substitution of WO3 showed relatively little effect on the activation energy. Structural modification along with the valence state change of vanadium and tungsten ions were discussed in connection with Raman spectroscopy and X-ray photoelectron spectroscopy analysis.",
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Compositional effect on the electrical properties of V2O 5-P2O5-WO3 system. / Chung, Woon Jin; Kim, Kyoung Hoon; Choi, Yong Gyu; Shin, Dong Wook.

In: Journal of the American Ceramic Society, Vol. 93, No. 8, 01.08.2010, p. 2292-2296.

Research output: Contribution to journalArticle

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