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Structural, magnetic and optical properties of disordered double perovskite Gd(2)CoCrO(6) nanoparticles
We have synthesized disordered double perovskite Gd(2)CoCrO(6) (GCCO) nanoparticles with an average particle size of 71 ± 3 nm by adopting a citrate sol–gel method to investigate their structural, magnetic, and optical properties. Rietveld refinement of the X-ray diffraction pattern showed that GCCO...
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/PMC10258676/ https://www.ncbi.nlm.nih.gov/pubmed/37312994 http://dx.doi.org/10.1039/d3ra02233a |
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author | Hosen, M. J. Basith, M. A. Syed, I. M. |
author_facet | Hosen, M. J. Basith, M. A. Syed, I. M. |
author_sort | Hosen, M. J. |
collection | PubMed |
description | We have synthesized disordered double perovskite Gd(2)CoCrO(6) (GCCO) nanoparticles with an average particle size of 71 ± 3 nm by adopting a citrate sol–gel method to investigate their structural, magnetic, and optical properties. Rietveld refinement of the X-ray diffraction pattern showed that GCCO is crystallized in a monoclinic structure with space group P2(1)/n, which is further confirmed by Raman spectroscopic analysis. The absence of perfect long-range ordering between Co and Cr ions is confirmed by the mixed valence states of Co and Cr. A Néel transition was observed at a higher temperature of T(N) = 105 K compared to that of an analogous double perovskite Gd(2)FeCrO(6) due to a greater degree of magnetocrystalline anisotropy of Co than Fe. Magnetization reversal (MR) behavior with a compensation temperature of T(comp) = 30 K was also observed. The hysteresis loop obtained at 5 K exhibited the presence of both ferromagnetic (FM) and antiferromagnetic (AFM) domains. Super-exchange and Dzyaloshinskii–Moriya (DM) interactions between various cations via oxygen ligands are responsible for the observed FM or AFM ordering in the system. Furthermore, UV-visible and photoluminescence spectroscopy demonstrated the semiconducting nature of GCCO with a direct optical bandgap of 2.25 eV. The Mulliken electronegativity approach revealed the potential applicability of GCCO nanoparticles in photocatalytic H(2) and O(2) evolution from water. Due to a favorable bandgap and potentiality as a photocatalyst, GCCO can be a promising new member of double perovskite materials for photocatalytic and related solar energy applications. |
format | Online Article Text |
id | pubmed-10258676 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-102586762023-06-13 Structural, magnetic and optical properties of disordered double perovskite Gd(2)CoCrO(6) nanoparticles Hosen, M. J. Basith, M. A. Syed, I. M. RSC Adv Chemistry We have synthesized disordered double perovskite Gd(2)CoCrO(6) (GCCO) nanoparticles with an average particle size of 71 ± 3 nm by adopting a citrate sol–gel method to investigate their structural, magnetic, and optical properties. Rietveld refinement of the X-ray diffraction pattern showed that GCCO is crystallized in a monoclinic structure with space group P2(1)/n, which is further confirmed by Raman spectroscopic analysis. The absence of perfect long-range ordering between Co and Cr ions is confirmed by the mixed valence states of Co and Cr. A Néel transition was observed at a higher temperature of T(N) = 105 K compared to that of an analogous double perovskite Gd(2)FeCrO(6) due to a greater degree of magnetocrystalline anisotropy of Co than Fe. Magnetization reversal (MR) behavior with a compensation temperature of T(comp) = 30 K was also observed. The hysteresis loop obtained at 5 K exhibited the presence of both ferromagnetic (FM) and antiferromagnetic (AFM) domains. Super-exchange and Dzyaloshinskii–Moriya (DM) interactions between various cations via oxygen ligands are responsible for the observed FM or AFM ordering in the system. Furthermore, UV-visible and photoluminescence spectroscopy demonstrated the semiconducting nature of GCCO with a direct optical bandgap of 2.25 eV. The Mulliken electronegativity approach revealed the potential applicability of GCCO nanoparticles in photocatalytic H(2) and O(2) evolution from water. Due to a favorable bandgap and potentiality as a photocatalyst, GCCO can be a promising new member of double perovskite materials for photocatalytic and related solar energy applications. The Royal Society of Chemistry 2023-06-12 /pmc/articles/PMC10258676/ /pubmed/37312994 http://dx.doi.org/10.1039/d3ra02233a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Hosen, M. J. Basith, M. A. Syed, I. M. Structural, magnetic and optical properties of disordered double perovskite Gd(2)CoCrO(6) nanoparticles |
title | Structural, magnetic and optical properties of disordered double perovskite Gd(2)CoCrO(6) nanoparticles |
title_full | Structural, magnetic and optical properties of disordered double perovskite Gd(2)CoCrO(6) nanoparticles |
title_fullStr | Structural, magnetic and optical properties of disordered double perovskite Gd(2)CoCrO(6) nanoparticles |
title_full_unstemmed | Structural, magnetic and optical properties of disordered double perovskite Gd(2)CoCrO(6) nanoparticles |
title_short | Structural, magnetic and optical properties of disordered double perovskite Gd(2)CoCrO(6) nanoparticles |
title_sort | structural, magnetic and optical properties of disordered double perovskite gd(2)cocro(6) nanoparticles |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10258676/ https://www.ncbi.nlm.nih.gov/pubmed/37312994 http://dx.doi.org/10.1039/d3ra02233a |
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