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FeSi(2): a two-dimensional ferromagnet containing planar hexacoordinate Fe atoms
As an unconventional bonding pattern different from conventional chemistry, the concept of planar hypercoordinate atoms was first proposed in the molecular system, and it has been recently extended to 2D periodic systems. Using first-principles calculations, herein we predict a stable FeSi(2) monola...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
RSC
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9417100/ https://www.ncbi.nlm.nih.gov/pubmed/36132695 http://dx.doi.org/10.1039/d1na00772f |
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author | Zhao, Ying Liu, Qinxi Xing, Jianpei Jiang, Xue Zhao, Jijun |
author_facet | Zhao, Ying Liu, Qinxi Xing, Jianpei Jiang, Xue Zhao, Jijun |
author_sort | Zhao, Ying |
collection | PubMed |
description | As an unconventional bonding pattern different from conventional chemistry, the concept of planar hypercoordinate atoms was first proposed in the molecular system, and it has been recently extended to 2D periodic systems. Using first-principles calculations, herein we predict a stable FeSi(2) monolayer with planar hexacoordinate Fe atoms. Due to its abundant multicenter bonds, the FeSi(2) monolayer shows excellent thermal and kinetic stability, anisotropic mechanical properties and room-temperature ferromagnetism (T(C) ∼360 K). Furthermore, we have demonstrated the feasibility of directly growing an FeSi(2) monolayer on a Si (110) substrate while maintaining the novel electronic and magnetic properties of the freestanding monolayer. The FeSi(2) monolayer synthesized in this way would be compatible with the mature silicon semiconductor technology and could be utilized for spintronic devices. |
format | Online Article Text |
id | pubmed-9417100 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | RSC |
record_format | MEDLINE/PubMed |
spelling | pubmed-94171002022-09-20 FeSi(2): a two-dimensional ferromagnet containing planar hexacoordinate Fe atoms Zhao, Ying Liu, Qinxi Xing, Jianpei Jiang, Xue Zhao, Jijun Nanoscale Adv Chemistry As an unconventional bonding pattern different from conventional chemistry, the concept of planar hypercoordinate atoms was first proposed in the molecular system, and it has been recently extended to 2D periodic systems. Using first-principles calculations, herein we predict a stable FeSi(2) monolayer with planar hexacoordinate Fe atoms. Due to its abundant multicenter bonds, the FeSi(2) monolayer shows excellent thermal and kinetic stability, anisotropic mechanical properties and room-temperature ferromagnetism (T(C) ∼360 K). Furthermore, we have demonstrated the feasibility of directly growing an FeSi(2) monolayer on a Si (110) substrate while maintaining the novel electronic and magnetic properties of the freestanding monolayer. The FeSi(2) monolayer synthesized in this way would be compatible with the mature silicon semiconductor technology and could be utilized for spintronic devices. RSC 2021-12-13 /pmc/articles/PMC9417100/ /pubmed/36132695 http://dx.doi.org/10.1039/d1na00772f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Zhao, Ying Liu, Qinxi Xing, Jianpei Jiang, Xue Zhao, Jijun FeSi(2): a two-dimensional ferromagnet containing planar hexacoordinate Fe atoms |
title | FeSi(2): a two-dimensional ferromagnet containing planar hexacoordinate Fe atoms |
title_full | FeSi(2): a two-dimensional ferromagnet containing planar hexacoordinate Fe atoms |
title_fullStr | FeSi(2): a two-dimensional ferromagnet containing planar hexacoordinate Fe atoms |
title_full_unstemmed | FeSi(2): a two-dimensional ferromagnet containing planar hexacoordinate Fe atoms |
title_short | FeSi(2): a two-dimensional ferromagnet containing planar hexacoordinate Fe atoms |
title_sort | fesi(2): a two-dimensional ferromagnet containing planar hexacoordinate fe atoms |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9417100/ https://www.ncbi.nlm.nih.gov/pubmed/36132695 http://dx.doi.org/10.1039/d1na00772f |
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