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Dielectric relaxation of the double perovskite oxide Ba(2)PrRuO(6)

Samples of Ba(2)PrRuO(6) were prepared by the solid state reaction method and the structure was characterized by X-ray diffraction (XRD). Scanning electron microscopy (SEM) and dielectric measurements were performed in order to investigate the morphology and electric properties of the ceramics. X-ra...

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Autores principales: Chen, Jenq-Wei, Chiou, Kuan Ru, Hsueh, An-Chih, Chang, Ching-Ray
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9063643/
https://www.ncbi.nlm.nih.gov/pubmed/35515871
http://dx.doi.org/10.1039/c9ra00663j
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author Chen, Jenq-Wei
Chiou, Kuan Ru
Hsueh, An-Chih
Chang, Ching-Ray
author_facet Chen, Jenq-Wei
Chiou, Kuan Ru
Hsueh, An-Chih
Chang, Ching-Ray
author_sort Chen, Jenq-Wei
collection PubMed
description Samples of Ba(2)PrRuO(6) were prepared by the solid state reaction method and the structure was characterized by X-ray diffraction (XRD). Scanning electron microscopy (SEM) and dielectric measurements were performed in order to investigate the morphology and electric properties of the ceramics. X-ray diffraction data reveal that the Ba(2)PrRuO(6) samples are of the cubic crystal structure with the space group Fm3̄m at room temperature. The dielectric properties were studied in the range of 20 Hz to 1 MHz in the temperature range from 10 K to 300 K. Strong dispersion in frequency and a rapid increase in ε′ are observed when T > 150 K. The observed steps of the ε′(T) curves are correlated with the peaks of the tan δ(T) curves, with the peak temperature shifting to higher values as the frequency increases. Impedance spectroscopy studies indicate the presence of grain and grain boundary relaxations in the sample at high temperatures, while at low temperatures only grain relaxation can be observed. Both grain and grain boundary relaxation times follow the Arrhenius law with activation energies of 0.16 eV and 0.17 eV, respectively.
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spelling pubmed-90636432022-05-04 Dielectric relaxation of the double perovskite oxide Ba(2)PrRuO(6) Chen, Jenq-Wei Chiou, Kuan Ru Hsueh, An-Chih Chang, Ching-Ray RSC Adv Chemistry Samples of Ba(2)PrRuO(6) were prepared by the solid state reaction method and the structure was characterized by X-ray diffraction (XRD). Scanning electron microscopy (SEM) and dielectric measurements were performed in order to investigate the morphology and electric properties of the ceramics. X-ray diffraction data reveal that the Ba(2)PrRuO(6) samples are of the cubic crystal structure with the space group Fm3̄m at room temperature. The dielectric properties were studied in the range of 20 Hz to 1 MHz in the temperature range from 10 K to 300 K. Strong dispersion in frequency and a rapid increase in ε′ are observed when T > 150 K. The observed steps of the ε′(T) curves are correlated with the peaks of the tan δ(T) curves, with the peak temperature shifting to higher values as the frequency increases. Impedance spectroscopy studies indicate the presence of grain and grain boundary relaxations in the sample at high temperatures, while at low temperatures only grain relaxation can be observed. Both grain and grain boundary relaxation times follow the Arrhenius law with activation energies of 0.16 eV and 0.17 eV, respectively. The Royal Society of Chemistry 2019-04-23 /pmc/articles/PMC9063643/ /pubmed/35515871 http://dx.doi.org/10.1039/c9ra00663j Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Chen, Jenq-Wei
Chiou, Kuan Ru
Hsueh, An-Chih
Chang, Ching-Ray
Dielectric relaxation of the double perovskite oxide Ba(2)PrRuO(6)
title Dielectric relaxation of the double perovskite oxide Ba(2)PrRuO(6)
title_full Dielectric relaxation of the double perovskite oxide Ba(2)PrRuO(6)
title_fullStr Dielectric relaxation of the double perovskite oxide Ba(2)PrRuO(6)
title_full_unstemmed Dielectric relaxation of the double perovskite oxide Ba(2)PrRuO(6)
title_short Dielectric relaxation of the double perovskite oxide Ba(2)PrRuO(6)
title_sort dielectric relaxation of the double perovskite oxide ba(2)prruo(6)
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9063643/
https://www.ncbi.nlm.nih.gov/pubmed/35515871
http://dx.doi.org/10.1039/c9ra00663j
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