Dc and ac Conductivities of (V2O5)x(B2O3) 1-X oxide glasses

H. El Mkami; B. Deroide; R. Backov; J. V. Zanchetta

doi:10.1016/S0022-3697(99)00306-6

Dc and ac Conductivities of (V₂O₅)_x(B₂O₃) _1-X oxide glasses

H. El Mkami
, B. Deroide^*
, R. Backov
, J. V. Zanchetta

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Glasses of composition (V₂O₅)_x(B₂O₃) _1-x with x = 0.1, 0.3, 0.5, 0.7 and 0.9 were obtained by a quenching technique. Conductivity measurements using σ_ac were performed on compact pellets of these materials. The conductivity behavior in direct regime, σ_dc, is described by the "small polaron" model. The room temperature variation of log σ_dc with the activation energy of each composition, suggests an adiabatic hopping character to the conduction. Application of Hunt's model to describe the ac conductivity behavior shows that the relaxation process has a local character and can be described by hops between each pair of sites.

Original language	English
Pages (from-to)	819-826
Number of pages	8
Journal	Journal of Physics and Chemistry of Solids
Volume	61
Issue number	5
DOIs	https://doi.org/10.1016/S0022-3697(99)00306-6
Publication status	Published - 1 Jan 2000

Keywords

Dielectric losses

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Cite this

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title = "Dc and ac Conductivities of (V2O5)x(B2O3) 1-X oxide glasses",

abstract = "Glasses of composition (V2O5)x(B2O3) 1-x with x = 0.1, 0.3, 0.5, 0.7 and 0.9 were obtained by a quenching technique. Conductivity measurements using σac were performed on compact pellets of these materials. The conductivity behavior in direct regime, σdc, is described by the {"}small polaron{"} model. The room temperature variation of log σdc with the activation energy of each composition, suggests an adiabatic hopping character to the conduction. Application of Hunt's model to describe the ac conductivity behavior shows that the relaxation process has a local character and can be described by hops between each pair of sites.",

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T1 - Dc and ac Conductivities of (V2O5)x(B2O3) 1-X oxide glasses

AU - El Mkami, H.

AU - Deroide, B.

AU - Backov, R.

AU - Zanchetta, J. V.

PY - 2000/1/1

Y1 - 2000/1/1

N2 - Glasses of composition (V2O5)x(B2O3) 1-x with x = 0.1, 0.3, 0.5, 0.7 and 0.9 were obtained by a quenching technique. Conductivity measurements using σac were performed on compact pellets of these materials. The conductivity behavior in direct regime, σdc, is described by the "small polaron" model. The room temperature variation of log σdc with the activation energy of each composition, suggests an adiabatic hopping character to the conduction. Application of Hunt's model to describe the ac conductivity behavior shows that the relaxation process has a local character and can be described by hops between each pair of sites.

AB - Glasses of composition (V2O5)x(B2O3) 1-x with x = 0.1, 0.3, 0.5, 0.7 and 0.9 were obtained by a quenching technique. Conductivity measurements using σac were performed on compact pellets of these materials. The conductivity behavior in direct regime, σdc, is described by the "small polaron" model. The room temperature variation of log σdc with the activation energy of each composition, suggests an adiabatic hopping character to the conduction. Application of Hunt's model to describe the ac conductivity behavior shows that the relaxation process has a local character and can be described by hops between each pair of sites.

KW - Dielectric losses

UR - https://www.scopus.com/pages/publications/0033888398

U2 - 10.1016/S0022-3697(99)00306-6

DO - 10.1016/S0022-3697(99)00306-6

M3 - Article

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SP - 819

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JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

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