Achieving high-temperature ferromagnetism by means of magnetic ions dimerization

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Auteurs principaux:	Feng, Panjun, Zhang, Shuo, Liu, Dapeng, Gao, Miao, Ma, Fengjie, Yan, Xun-Wang, Xie, Z. Y.
Format:	Preprint
Publié:	2022
Sujets:	Materials Science Computational Physics
Accès en ligne:	Acceder al recurso
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author	Feng, Panjun Zhang, Shuo Liu, Dapeng Gao, Miao Ma, Fengjie Yan, Xun-Wang Xie, Z. Y.
author_facet	Feng, Panjun Zhang, Shuo Liu, Dapeng Gao, Miao Ma, Fengjie Yan, Xun-Wang Xie, Z. Y.
contents	Magnetic two-dimensional materials have potential application in next-generation electronic devices and have stimulated extensive interest in condensed matter physics and material fields. However, how to realize high-temperature ferromagnetism in two-dimensional materials remains a great challenge in physics. Herein, we propose an effective approach that the dimerization of magnetic ions in two-dimensional materials can enhance the exchange coupling and stabilize the ferromagnetism. Manganese carbonitride Mn$_2$N$_6$C$_6$ with a planar monolayer structure is taken as an example to clarify the method, in which two Mn atoms are gathered together to form a ferromagnetic dimer of Mn atoms and further these dimers are coupled together to form the overall ferromagnetism of the two-dimensional material. In Mn$_2$N$_6$C$_6$ monolayer, the near-room-temperature ferromagnetism with the Curie temperature of 272.3 K is determined by solving Heisenberg model using Monte Carlo simulations method.
format	Preprint
id	arxiv_https___arxiv_org_abs_2203_01775
institution	arXiv
publishDate	2022
record_format	arxiv
spellingShingle	Achieving high-temperature ferromagnetism by means of magnetic ions dimerization Feng, Panjun Zhang, Shuo Liu, Dapeng Gao, Miao Ma, Fengjie Yan, Xun-Wang Xie, Z. Y. Materials Science Computational Physics Magnetic two-dimensional materials have potential application in next-generation electronic devices and have stimulated extensive interest in condensed matter physics and material fields. However, how to realize high-temperature ferromagnetism in two-dimensional materials remains a great challenge in physics. Herein, we propose an effective approach that the dimerization of magnetic ions in two-dimensional materials can enhance the exchange coupling and stabilize the ferromagnetism. Manganese carbonitride Mn$_2$N$_6$C$_6$ with a planar monolayer structure is taken as an example to clarify the method, in which two Mn atoms are gathered together to form a ferromagnetic dimer of Mn atoms and further these dimers are coupled together to form the overall ferromagnetism of the two-dimensional material. In Mn$_2$N$_6$C$_6$ monolayer, the near-room-temperature ferromagnetism with the Curie temperature of 272.3 K is determined by solving Heisenberg model using Monte Carlo simulations method.
title	Achieving high-temperature ferromagnetism by means of magnetic ions dimerization
topic	Materials Science Computational Physics
url	https://arxiv.org/abs/2203.01775

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