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Title: Impedance Spectroscopy Study of the Electrical Properties of Cation-Substituted Barium Hexaaluminate Ceramics

Abstract

We report on the behavior of frequency and temperature dependences of the impedance of a measuring cell in the form of a parallel-plate capacitor filled with barium hexaaluminate ceramics with four aluminum cations replaced by iron (BaO · 2Fe{sub 2}O{sub 3} · 4Al{sub 2}O{sub 3}). The measurements have been performed in the frequency range of 0.5–10{sup 8} Hz at temperatures of 20-375°C. A technique for determining the electrical properties of the investigated ceramics is proposed, which is based on an equivalent electric circuit allowing the recorded impedance spectra to be approximated with sufficiently high accuracy. The established spectral features are indicative of the presence of two electric relaxation times different from each other by three orders of magnitude. This fact is explained by the difference between the charge transport processes in the bulk of crystallites and thin intercrystallite spacers, for which the charge activation energies have been determined.

Authors:
;  [1];  [2]
  1. Russian Academy of Sciences, Kirensky Institute of Physics, Federal Research Center KSC SB RAS (Russian Federation)
  2. Russian Academy of Sciences, Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch (Russian Federation)
Publication Date:
OSTI Identifier:
22771448
Resource Type:
Journal Article
Journal Name:
Physics of the Solid State
Additional Journal Information:
Journal Volume: 60; Journal Issue: 2; Other Information: Copyright (c) 2018 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1063-7834
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACCURACY; ACTIVATION ENERGY; ALUMINIUM COMPOUNDS; APPROXIMATIONS; BARIUM COMPOUNDS; BARIUM OXIDES; CAPACITORS; CATIONS; CERAMICS; CHARGE TRANSPORT; ELECTRICAL PROPERTIES; IMPEDANCE; IRON; RELAXATION; SPACERS; SPECTRA; SPECTROSCOPY; TEMPERATURE DEPENDENCE

Citation Formats

Belyaev, B. A., E-mail: belyaev@iph.krasn.ru, Drokin, N. A., and Poluboyarov, V. A. Impedance Spectroscopy Study of the Electrical Properties of Cation-Substituted Barium Hexaaluminate Ceramics. United States: N. p., 2018. Web. doi:10.1134/S1063783418020063.
Belyaev, B. A., E-mail: belyaev@iph.krasn.ru, Drokin, N. A., & Poluboyarov, V. A. Impedance Spectroscopy Study of the Electrical Properties of Cation-Substituted Barium Hexaaluminate Ceramics. United States. doi:10.1134/S1063783418020063.
Belyaev, B. A., E-mail: belyaev@iph.krasn.ru, Drokin, N. A., and Poluboyarov, V. A. Thu . "Impedance Spectroscopy Study of the Electrical Properties of Cation-Substituted Barium Hexaaluminate Ceramics". United States. doi:10.1134/S1063783418020063.
@article{osti_22771448,
title = {Impedance Spectroscopy Study of the Electrical Properties of Cation-Substituted Barium Hexaaluminate Ceramics},
author = {Belyaev, B. A., E-mail: belyaev@iph.krasn.ru and Drokin, N. A. and Poluboyarov, V. A.},
abstractNote = {We report on the behavior of frequency and temperature dependences of the impedance of a measuring cell in the form of a parallel-plate capacitor filled with barium hexaaluminate ceramics with four aluminum cations replaced by iron (BaO · 2Fe{sub 2}O{sub 3} · 4Al{sub 2}O{sub 3}). The measurements have been performed in the frequency range of 0.5–10{sup 8} Hz at temperatures of 20-375°C. A technique for determining the electrical properties of the investigated ceramics is proposed, which is based on an equivalent electric circuit allowing the recorded impedance spectra to be approximated with sufficiently high accuracy. The established spectral features are indicative of the presence of two electric relaxation times different from each other by three orders of magnitude. This fact is explained by the difference between the charge transport processes in the bulk of crystallites and thin intercrystallite spacers, for which the charge activation energies have been determined.},
doi = {10.1134/S1063783418020063},
journal = {Physics of the Solid State},
issn = {1063-7834},
number = 2,
volume = 60,
place = {United States},
year = {2018},
month = {2}
}