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Systematic Investigation of the Structure, Stability, and Spin Magnetic Moment of CrM(n) Clusters (M = Cu, Ag, Au, and n = 2–20) by DFT Calculations

[Image: see text] Binary clusters of transition-metal and noble-metal elements have been gathering momentum for not only advanced fundamental understanding but also potential as elementary blocks of novel nanostructured materials. In this regard, the geometries, electronic structures, stability, and...

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Autores principales: Mai, Nguyen Thi, Lan, Ngo Thi, Cuong, Ngo Tuan, Tam, Nguyen Minh, Ngo, Son Tung, Phung, Thu Thi, Dang, Nguyen Van, Tung, Nguyen Thanh
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2021
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8358970/
https://www.ncbi.nlm.nih.gov/pubmed/34395982
http://dx.doi.org/10.1021/acsomega.1c02282
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author Mai, Nguyen Thi
Lan, Ngo Thi
Cuong, Ngo Tuan
Tam, Nguyen Minh
Ngo, Son Tung
Phung, Thu Thi
Dang, Nguyen Van
Tung, Nguyen Thanh
author_facet Mai, Nguyen Thi
Lan, Ngo Thi
Cuong, Ngo Tuan
Tam, Nguyen Minh
Ngo, Son Tung
Phung, Thu Thi
Dang, Nguyen Van
Tung, Nguyen Thanh
author_sort Mai, Nguyen Thi
collection PubMed
description [Image: see text] Binary clusters of transition-metal and noble-metal elements have been gathering momentum for not only advanced fundamental understanding but also potential as elementary blocks of novel nanostructured materials. In this regard, the geometries, electronic structures, stability, and magnetic properties of Cr-doped Cu(n), Ag(n), and Au(n) clusters (n = 2–20) have been systematically studied by means of density functional theory calculations. It is found that the structural evolutions of CrCu(n) and CrAg(n) clusters are identical. The icosahedral CrCu(12) and CrAg(12) are crucial sizes for doped copper and silver species. Small CrAu(n) clusters prefer the planar geometries, while the larger ones appear as on the way to establish the tetrahedral CrAu(19). Our results show that while each noble atom contributes one s valence electron to the cluster shell, the number of chromium delocalized electrons is strongly size-dependent. The localization and delocalization behavior of 3d orbitals of the chromium decide how they participate in metallic bonding, stabilize the cluster, and give rise to and eventually quench the spin magnetic moment. Moreover, molecular orbital analysis in combination with a qualitative interpretation using the phenomenological shell model is applied to reveal the complex interplay between geometric structure, electronic structure, and magnetic moment of clusters. The finding results are expected to provide greater insight into how a host material electronic structure influences the geometry, stability, and formation of spin magnetic moments in doped systems.
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spelling pubmed-83589702021-08-13 Systematic Investigation of the Structure, Stability, and Spin Magnetic Moment of CrM(n) Clusters (M = Cu, Ag, Au, and n = 2–20) by DFT Calculations Mai, Nguyen Thi Lan, Ngo Thi Cuong, Ngo Tuan Tam, Nguyen Minh Ngo, Son Tung Phung, Thu Thi Dang, Nguyen Van Tung, Nguyen Thanh ACS Omega [Image: see text] Binary clusters of transition-metal and noble-metal elements have been gathering momentum for not only advanced fundamental understanding but also potential as elementary blocks of novel nanostructured materials. In this regard, the geometries, electronic structures, stability, and magnetic properties of Cr-doped Cu(n), Ag(n), and Au(n) clusters (n = 2–20) have been systematically studied by means of density functional theory calculations. It is found that the structural evolutions of CrCu(n) and CrAg(n) clusters are identical. The icosahedral CrCu(12) and CrAg(12) are crucial sizes for doped copper and silver species. Small CrAu(n) clusters prefer the planar geometries, while the larger ones appear as on the way to establish the tetrahedral CrAu(19). Our results show that while each noble atom contributes one s valence electron to the cluster shell, the number of chromium delocalized electrons is strongly size-dependent. The localization and delocalization behavior of 3d orbitals of the chromium decide how they participate in metallic bonding, stabilize the cluster, and give rise to and eventually quench the spin magnetic moment. Moreover, molecular orbital analysis in combination with a qualitative interpretation using the phenomenological shell model is applied to reveal the complex interplay between geometric structure, electronic structure, and magnetic moment of clusters. The finding results are expected to provide greater insight into how a host material electronic structure influences the geometry, stability, and formation of spin magnetic moments in doped systems. American Chemical Society 2021-07-28 /pmc/articles/PMC8358970/ /pubmed/34395982 http://dx.doi.org/10.1021/acsomega.1c02282 Text en © 2021 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by-nc-nd/4.0/Permits non-commercial access and re-use, provided that author attribution and integrity are maintained; but does not permit creation of adaptations or other derivative works (https://creativecommons.org/licenses/by-nc-nd/4.0/).
spellingShingle Mai, Nguyen Thi
Lan, Ngo Thi
Cuong, Ngo Tuan
Tam, Nguyen Minh
Ngo, Son Tung
Phung, Thu Thi
Dang, Nguyen Van
Tung, Nguyen Thanh
Systematic Investigation of the Structure, Stability, and Spin Magnetic Moment of CrM(n) Clusters (M = Cu, Ag, Au, and n = 2–20) by DFT Calculations
title Systematic Investigation of the Structure, Stability, and Spin Magnetic Moment of CrM(n) Clusters (M = Cu, Ag, Au, and n = 2–20) by DFT Calculations
title_full Systematic Investigation of the Structure, Stability, and Spin Magnetic Moment of CrM(n) Clusters (M = Cu, Ag, Au, and n = 2–20) by DFT Calculations
title_fullStr Systematic Investigation of the Structure, Stability, and Spin Magnetic Moment of CrM(n) Clusters (M = Cu, Ag, Au, and n = 2–20) by DFT Calculations
title_full_unstemmed Systematic Investigation of the Structure, Stability, and Spin Magnetic Moment of CrM(n) Clusters (M = Cu, Ag, Au, and n = 2–20) by DFT Calculations
title_short Systematic Investigation of the Structure, Stability, and Spin Magnetic Moment of CrM(n) Clusters (M = Cu, Ag, Au, and n = 2–20) by DFT Calculations
title_sort systematic investigation of the structure, stability, and spin magnetic moment of crm(n) clusters (m = cu, ag, au, and n = 2–20) by dft calculations
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8358970/
https://www.ncbi.nlm.nih.gov/pubmed/34395982
http://dx.doi.org/10.1021/acsomega.1c02282
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