Frequency dependence of ionic conductivity in a two-dimensional system of Ag β-alumina

O. Kamishima; Y. Iwai; J. Kawamura

doi:10.1016/j.ssi.2013.12.021

Frequency dependence of ionic conductivity in a two-dimensional system of Ag β-alumina

O. Kamishima, Y. Iwai, J. Kawamura

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

6 Citations (Scopus)

Abstract

Measurements of the complex impedance of a single crystal of Ag β-alumina have been made in the frequency range of 1 Hz-10⁶ Hz. Ag β-alumina is an ideal two-dimensional superionic conductor (SIC). The slope of AC conductivity σ(ω) was investigated in the temperature range from approximately 100 K to room temperature. A small power-law dependence σ(ω) ∞ ω^s was found, with the slope s being evaluated as 0.11-0.15. In the present study, a "scale-invariance" for SIC with a two-dimensional disordered system was suggested from the small power-law dependence.

Original language	English
Pages (from-to)	495-499
Number of pages	5
Journal	Solid State Ionics
Volume	262
DOIs	https://doi.org/10.1016/j.ssi.2013.12.021
Publication status	Published - 2014 Sept 1

Keywords

Power-law conductivity
Scale-invariance
β-Alumina

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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10.1016/j.ssi.2013.12.021

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title = "Frequency dependence of ionic conductivity in a two-dimensional system of Ag β-alumina",

abstract = "Measurements of the complex impedance of a single crystal of Ag β-alumina have been made in the frequency range of 1 Hz-106 Hz. Ag β-alumina is an ideal two-dimensional superionic conductor (SIC). The slope of AC conductivity σ(ω) was investigated in the temperature range from approximately 100 K to room temperature. A small power-law dependence σ(ω) ∞ ωs was found, with the slope s being evaluated as 0.11-0.15. In the present study, a {"}scale-invariance{"} for SIC with a two-dimensional disordered system was suggested from the small power-law dependence.",

keywords = "Power-law conductivity, Scale-invariance, β-Alumina",

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note = "Funding Information: This work was performed under the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”. ",

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T1 - Frequency dependence of ionic conductivity in a two-dimensional system of Ag β-alumina

AU - Kamishima, O.

AU - Iwai, Y.

AU - Kawamura, J.

N1 - Funding Information: This work was performed under the Cooperative Research Program of “Network Joint Research Center for Materials and Devices”.

PY - 2014/9/1

Y1 - 2014/9/1

N2 - Measurements of the complex impedance of a single crystal of Ag β-alumina have been made in the frequency range of 1 Hz-106 Hz. Ag β-alumina is an ideal two-dimensional superionic conductor (SIC). The slope of AC conductivity σ(ω) was investigated in the temperature range from approximately 100 K to room temperature. A small power-law dependence σ(ω) ∞ ωs was found, with the slope s being evaluated as 0.11-0.15. In the present study, a "scale-invariance" for SIC with a two-dimensional disordered system was suggested from the small power-law dependence.

AB - Measurements of the complex impedance of a single crystal of Ag β-alumina have been made in the frequency range of 1 Hz-106 Hz. Ag β-alumina is an ideal two-dimensional superionic conductor (SIC). The slope of AC conductivity σ(ω) was investigated in the temperature range from approximately 100 K to room temperature. A small power-law dependence σ(ω) ∞ ωs was found, with the slope s being evaluated as 0.11-0.15. In the present study, a "scale-invariance" for SIC with a two-dimensional disordered system was suggested from the small power-law dependence.

KW - Power-law conductivity

KW - Scale-invariance

KW - β-Alumina

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DO - 10.1016/j.ssi.2013.12.021

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EP - 499

JO - Solid State Ionics

JF - Solid State Ionics

ER -

Frequency dependence of ionic conductivity in a two-dimensional system of Ag β-alumina

Abstract

Keywords

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