Synthesis and investigation of the morphological, optical, electrical and dielectric characteristics of a disodium cobalt orthogermanate

A sodium cobalt germanate material (Na(2)CoGeO(4)) was synthesized and studied. The X-ray powder diffraction pattern revealed a monoclinic crystal system with the Pn space group. The calculated value of the direct bandgap (E(g)) was (3.89 ± 0.02) eV. Electrical measurements were undertaken in a freq...

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Autores principales: Ben Yahya, Sourour, Barillé, Regis, Louati, Bassem
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2023
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10495872/
https://www.ncbi.nlm.nih.gov/pubmed/37705983
http://dx.doi.org/10.1039/d3ra04829b
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author Ben Yahya, Sourour
Barillé, Regis
Louati, Bassem
author_facet Ben Yahya, Sourour
Barillé, Regis
Louati, Bassem
author_sort Ben Yahya, Sourour
collection PubMed
description A sodium cobalt germanate material (Na(2)CoGeO(4)) was synthesized and studied. The X-ray powder diffraction pattern revealed a monoclinic crystal system with the Pn space group. The calculated value of the direct bandgap (E(g)) was (3.89 ± 0.02) eV. Electrical measurements were undertaken in a frequency range from 40 Hz to 1 MHz and a temperature range from 403 K to 573 K. Nyquist plots revealed only a semicircle in the whole impedance spectra due to the effect of interior grains. The AC conductivity of Na(2)CoGeO(4) was associated with the correlated barrier hopping (CBH) model. Studies of the complex electric modulus M*(ω) confirmed that the relaxation process was thermally activated.
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spelling pubmed-104958722023-09-13 Synthesis and investigation of the morphological, optical, electrical and dielectric characteristics of a disodium cobalt orthogermanate Ben Yahya, Sourour Barillé, Regis Louati, Bassem RSC Adv Chemistry A sodium cobalt germanate material (Na(2)CoGeO(4)) was synthesized and studied. The X-ray powder diffraction pattern revealed a monoclinic crystal system with the Pn space group. The calculated value of the direct bandgap (E(g)) was (3.89 ± 0.02) eV. Electrical measurements were undertaken in a frequency range from 40 Hz to 1 MHz and a temperature range from 403 K to 573 K. Nyquist plots revealed only a semicircle in the whole impedance spectra due to the effect of interior grains. The AC conductivity of Na(2)CoGeO(4) was associated with the correlated barrier hopping (CBH) model. Studies of the complex electric modulus M*(ω) confirmed that the relaxation process was thermally activated. The Royal Society of Chemistry 2023-09-12 /pmc/articles/PMC10495872/ /pubmed/37705983 http://dx.doi.org/10.1039/d3ra04829b Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Ben Yahya, Sourour
Barillé, Regis
Louati, Bassem
Synthesis and investigation of the morphological, optical, electrical and dielectric characteristics of a disodium cobalt orthogermanate
title Synthesis and investigation of the morphological, optical, electrical and dielectric characteristics of a disodium cobalt orthogermanate
title_full Synthesis and investigation of the morphological, optical, electrical and dielectric characteristics of a disodium cobalt orthogermanate
title_fullStr Synthesis and investigation of the morphological, optical, electrical and dielectric characteristics of a disodium cobalt orthogermanate
title_full_unstemmed Synthesis and investigation of the morphological, optical, electrical and dielectric characteristics of a disodium cobalt orthogermanate
title_short Synthesis and investigation of the morphological, optical, electrical and dielectric characteristics of a disodium cobalt orthogermanate
title_sort synthesis and investigation of the morphological, optical, electrical and dielectric characteristics of a disodium cobalt orthogermanate
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10495872/
https://www.ncbi.nlm.nih.gov/pubmed/37705983
http://dx.doi.org/10.1039/d3ra04829b
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AT barilleregis synthesisandinvestigationofthemorphologicalopticalelectricalanddielectriccharacteristicsofadisodiumcobaltorthogermanate
AT louatibassem synthesisandinvestigationofthemorphologicalopticalelectricalanddielectriccharacteristicsofadisodiumcobaltorthogermanate

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