Measurement and analysis of time-domain electric field relaxation: The vitreous ionic conductor 0.4 Ca(NO3)2-0.6 KNO3

Hermann Wagner; Ranko Richert

doi:10.1063/1.369318

Measurement and analysis of time-domain electric field relaxation: The vitreous ionic conductor 0.4 Ca(NO³)₂-0.6 KNO₃

Hermann Wagner, Ranko Richert

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34 Scopus citations

Abstract

We have measured the electric modulus M(t) of the ionic conductor 0.4 Ca(NO₃)₂-0.6 KNO₃ (CKN) by recording the electric field relaxation E(t) under the constraints of a constant displacement D₀. The vitreous material CKN is studied in its glassy state for temperatures 240 K≤ T≤330 K and for times 7 × 10^-3 s≤t≤3 × 10⁵ s. In this range the dc conductivity varies from 3 × 10^-11 to 5 × 10^-17 S/cm according to Arrhenius behavior. We show that the time dependent resistivity p(t), instead of the conductivity σ(t), is an appropriate quantity for assessing the time dependent and steady state effects of ionic diffusivity on the basis of experimental modulus data M/(t) recorded in the time domain. Even substantial electrode polarization is not critical with regard to this data analysis.

Original language	English (US)
Pages (from-to)	1750-1755
Number of pages	6
Journal	Journal of Applied Physics
Volume	85
Issue number	3
DOIs	https://doi.org/10.1063/1.369318
State	Published - Feb 1999
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.1063/1.369318

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abstract = "We have measured the electric modulus M(t) of the ionic conductor 0.4 Ca(NO3)2-0.6 KNO3 (CKN) by recording the electric field relaxation E(t) under the constraints of a constant displacement D0. The vitreous material CKN is studied in its glassy state for temperatures 240 K≤ T≤330 K and for times 7 × 10-3 s≤t≤3 × 105 s. In this range the dc conductivity varies from 3 × 10-11 to 5 × 10-17 S/cm according to Arrhenius behavior. We show that the time dependent resistivity p(t), instead of the conductivity σ(t), is an appropriate quantity for assessing the time dependent and steady state effects of ionic diffusivity on the basis of experimental modulus data M/(t) recorded in the time domain. Even substantial electrode polarization is not critical with regard to this data analysis.",

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AU - Richert, Ranko

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AB - We have measured the electric modulus M(t) of the ionic conductor 0.4 Ca(NO3)2-0.6 KNO3 (CKN) by recording the electric field relaxation E(t) under the constraints of a constant displacement D0. The vitreous material CKN is studied in its glassy state for temperatures 240 K≤ T≤330 K and for times 7 × 10-3 s≤t≤3 × 105 s. In this range the dc conductivity varies from 3 × 10-11 to 5 × 10-17 S/cm according to Arrhenius behavior. We show that the time dependent resistivity p(t), instead of the conductivity σ(t), is an appropriate quantity for assessing the time dependent and steady state effects of ionic diffusivity on the basis of experimental modulus data M/(t) recorded in the time domain. Even substantial electrode polarization is not critical with regard to this data analysis.

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Measurement and analysis of time-domain electric field relaxation: The vitreous ionic conductor 0.4 Ca(NO³)₂-0.6 KNO₃

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