Electrical conductivity relaxation in lithium doped silver iodide

H. Correa; R. A. Vargas; J. García-Barriocanal; A. Rivera; J. Santamaría; C. León

doi:10.1016/j.jeurceramsoc.2007.02.148

Electrical conductivity relaxation in lithium doped silver iodide

H. Correa, R. A. Vargas, J. García-Barriocanal, A. Rivera, J. Santamaría, C. León

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Abstract

We report on electrical conductivity relaxation measurements of single crystal lithium doped silver iodide (Li_xAg_1-xI, 0 ≤ x ≤ 0.2) by Admittance Spectroscopy, in the frequency range 20 Hz to 1 MHz and at temperatures between 270 and 330 K. A power-law frequency dependence of the ac conductivity is observed at low temperatures and/or high frequencies, which is characteristic of the effects of ion-ion correlation in ion hopping. An analysis of the frequency dependence of the electric modulus shows that the time decay functions for the electric field relaxation are well described by stretched exponential functions of the form exp[-(t/τ)^1-n]. By increasing lithium content, ionic conductivity values do not change significantly, but the exponent n is found to decrease from n = 0.54 (for x = 0) to n = 0.23 (for x = 0.2). This result points to weaker correlation effects among silver ions when the lithium content is increased.

Original language	English (US)
Pages (from-to)	4297-4300
Number of pages	4
Journal	Journal of the European Ceramic Society
Volume	27
Issue number	13-15
DOIs	https://doi.org/10.1016/j.jeurceramsoc.2007.02.148
State	Published - 2007

Bibliographical note

Funding Information:
Authors from Universidad Complutense thank financial support from MCYT (MAT2004-3070-C05).

Keywords

Ionic conductivity

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jeurceramsoc.2007.02.148

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title = "Electrical conductivity relaxation in lithium doped silver iodide",

abstract = "We report on electrical conductivity relaxation measurements of single crystal lithium doped silver iodide (LixAg1-xI, 0 ≤ x ≤ 0.2) by Admittance Spectroscopy, in the frequency range 20 Hz to 1 MHz and at temperatures between 270 and 330 K. A power-law frequency dependence of the ac conductivity is observed at low temperatures and/or high frequencies, which is characteristic of the effects of ion-ion correlation in ion hopping. An analysis of the frequency dependence of the electric modulus shows that the time decay functions for the electric field relaxation are well described by stretched exponential functions of the form exp[-(t/τ)1-n]. By increasing lithium content, ionic conductivity values do not change significantly, but the exponent n is found to decrease from n = 0.54 (for x = 0) to n = 0.23 (for x = 0.2). This result points to weaker correlation effects among silver ions when the lithium content is increased.",

keywords = "Ionic conductivity",

author = "H. Correa and Vargas, {R. A.} and J. Garc{\'i}a-Barriocanal and A. Rivera and J. Santamar{\'i}a and C. Le{\'o}n",

note = "Funding Information: Authors from Universidad Complutense thank financial support from MCYT (MAT2004-3070-C05).",

year = "2007",

doi = "10.1016/j.jeurceramsoc.2007.02.148",

language = "English (US)",

volume = "27",

pages = "4297--4300",

journal = "Journal of the European Ceramic Society",

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TY - JOUR

T1 - Electrical conductivity relaxation in lithium doped silver iodide

AU - Correa, H.

AU - Vargas, R. A.

AU - García-Barriocanal, J.

AU - Rivera, A.

AU - Santamaría, J.

AU - León, C.

N1 - Funding Information: Authors from Universidad Complutense thank financial support from MCYT (MAT2004-3070-C05).

PY - 2007

Y1 - 2007

N2 - We report on electrical conductivity relaxation measurements of single crystal lithium doped silver iodide (LixAg1-xI, 0 ≤ x ≤ 0.2) by Admittance Spectroscopy, in the frequency range 20 Hz to 1 MHz and at temperatures between 270 and 330 K. A power-law frequency dependence of the ac conductivity is observed at low temperatures and/or high frequencies, which is characteristic of the effects of ion-ion correlation in ion hopping. An analysis of the frequency dependence of the electric modulus shows that the time decay functions for the electric field relaxation are well described by stretched exponential functions of the form exp[-(t/τ)1-n]. By increasing lithium content, ionic conductivity values do not change significantly, but the exponent n is found to decrease from n = 0.54 (for x = 0) to n = 0.23 (for x = 0.2). This result points to weaker correlation effects among silver ions when the lithium content is increased.

AB - We report on electrical conductivity relaxation measurements of single crystal lithium doped silver iodide (LixAg1-xI, 0 ≤ x ≤ 0.2) by Admittance Spectroscopy, in the frequency range 20 Hz to 1 MHz and at temperatures between 270 and 330 K. A power-law frequency dependence of the ac conductivity is observed at low temperatures and/or high frequencies, which is characteristic of the effects of ion-ion correlation in ion hopping. An analysis of the frequency dependence of the electric modulus shows that the time decay functions for the electric field relaxation are well described by stretched exponential functions of the form exp[-(t/τ)1-n]. By increasing lithium content, ionic conductivity values do not change significantly, but the exponent n is found to decrease from n = 0.54 (for x = 0) to n = 0.23 (for x = 0.2). This result points to weaker correlation effects among silver ions when the lithium content is increased.

KW - Ionic conductivity

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U2 - 10.1016/j.jeurceramsoc.2007.02.148

DO - 10.1016/j.jeurceramsoc.2007.02.148

M3 - Article

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SN - 0955-2219

VL - 27

SP - 4297

EP - 4300

JO - Journal of the European Ceramic Society

JF - Journal of the European Ceramic Society

IS - 13-15

ER -

Electrical conductivity relaxation in lithium doped silver iodide

Abstract

Bibliographical note

Keywords

UN SDGs

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