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Effect of lithium doping on the structural, conduction mechanism and dielectric property of MnNbO(4)
The development of multifunctional materials is an exceptional research area, which is aimed at enhancing the versatility of materials according to their wide fields of application. Special interest was devoted here to lithium (Li)-doped orthoniobate ANbO(4) (A = Mn), in particular, the new material...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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The Royal Society of Chemistry
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10318950/ https://www.ncbi.nlm.nih.gov/pubmed/37409039 http://dx.doi.org/10.1039/d3ra03393g |
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author | Aydi, Samia Chkoundali, Souad Oueslati, Abderrazek Aydi, Abdelhedi |
author_facet | Aydi, Samia Chkoundali, Souad Oueslati, Abderrazek Aydi, Abdelhedi |
author_sort | Aydi, Samia |
collection | PubMed |
description | The development of multifunctional materials is an exceptional research area, which is aimed at enhancing the versatility of materials according to their wide fields of application. Special interest was devoted here to lithium (Li)-doped orthoniobate ANbO(4) (A = Mn), in particular, the new material Li(0.08)Mn(0.92)NbO(4). This compound was successfully synthesized by a solid-state method and characterized using various techniques, including X-ray diffraction (XRD), which confirmed the successful formation of an ABO(4) oxide with an orthorhombic structure and the Pmmm space group. The morphology and elemental composition were analyzed by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The vibrational study (Raman) at room temperature confirmed the existence of the NbO(4) functional group. The effects of frequency and temperature on the electrical and dielectric properties were studied using impedance spectroscopy. In addition, the diminishing of the radius of semicircular arcs in the Nyquist plots (–Z′′ vs. Z′) showed the semiconductor behavior of the material. The electrical conductivity followed Jonscher's power law and the conduction mechanisms were identified. The electrical investigations showed the dominant transport mechanisms in the different frequency and temperature ranges, proposing the correlated barrier hopping (CBH) model in the ferroelectric phase and the paraelectric phase. The temperature dependence in the dielectric study revealed the relaxor ferroelectric nature of Li(0.08)Mn(0.92)NbO(4), which correlated the frequency–dispersive dielectric spectra with the conduction mechanisms and their relaxation processes. The results demonstrate that Li-doped Li(0.08)Mn(0.92)NbO(4) could be used both in dielectric and electrical applications. |
format | Online Article Text |
id | pubmed-10318950 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-103189502023-07-05 Effect of lithium doping on the structural, conduction mechanism and dielectric property of MnNbO(4) Aydi, Samia Chkoundali, Souad Oueslati, Abderrazek Aydi, Abdelhedi RSC Adv Chemistry The development of multifunctional materials is an exceptional research area, which is aimed at enhancing the versatility of materials according to their wide fields of application. Special interest was devoted here to lithium (Li)-doped orthoniobate ANbO(4) (A = Mn), in particular, the new material Li(0.08)Mn(0.92)NbO(4). This compound was successfully synthesized by a solid-state method and characterized using various techniques, including X-ray diffraction (XRD), which confirmed the successful formation of an ABO(4) oxide with an orthorhombic structure and the Pmmm space group. The morphology and elemental composition were analyzed by scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDX). The vibrational study (Raman) at room temperature confirmed the existence of the NbO(4) functional group. The effects of frequency and temperature on the electrical and dielectric properties were studied using impedance spectroscopy. In addition, the diminishing of the radius of semicircular arcs in the Nyquist plots (–Z′′ vs. Z′) showed the semiconductor behavior of the material. The electrical conductivity followed Jonscher's power law and the conduction mechanisms were identified. The electrical investigations showed the dominant transport mechanisms in the different frequency and temperature ranges, proposing the correlated barrier hopping (CBH) model in the ferroelectric phase and the paraelectric phase. The temperature dependence in the dielectric study revealed the relaxor ferroelectric nature of Li(0.08)Mn(0.92)NbO(4), which correlated the frequency–dispersive dielectric spectra with the conduction mechanisms and their relaxation processes. The results demonstrate that Li-doped Li(0.08)Mn(0.92)NbO(4) could be used both in dielectric and electrical applications. The Royal Society of Chemistry 2023-07-04 /pmc/articles/PMC10318950/ /pubmed/37409039 http://dx.doi.org/10.1039/d3ra03393g Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Aydi, Samia Chkoundali, Souad Oueslati, Abderrazek Aydi, Abdelhedi Effect of lithium doping on the structural, conduction mechanism and dielectric property of MnNbO(4) |
title | Effect of lithium doping on the structural, conduction mechanism and dielectric property of MnNbO(4) |
title_full | Effect of lithium doping on the structural, conduction mechanism and dielectric property of MnNbO(4) |
title_fullStr | Effect of lithium doping on the structural, conduction mechanism and dielectric property of MnNbO(4) |
title_full_unstemmed | Effect of lithium doping on the structural, conduction mechanism and dielectric property of MnNbO(4) |
title_short | Effect of lithium doping on the structural, conduction mechanism and dielectric property of MnNbO(4) |
title_sort | effect of lithium doping on the structural, conduction mechanism and dielectric property of mnnbo(4) |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10318950/ https://www.ncbi.nlm.nih.gov/pubmed/37409039 http://dx.doi.org/10.1039/d3ra03393g |
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