Ferromagnetism of Mn-N 4 architecture embedded graphene

Ferromagnetism of Mn-N 4 architecture embedded graphene

The realization of intrinsic two-dimensional (2D) magnetic materials with high Curie temperature is one of the prevalent research directions in spintronics. Here, a 2D ferromagnet of Mn-N 4 embedded graphene is reported, where the single Mn atom dispersed Mn-N 4 structure is confirmed by extended x-...

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Veröffentlicht in:Journal of physics. D, Applied physics Applied physics, 2022-06, Vol.55 (22), p.225001
Hauptverfasser: Zhang, Haiyi, Liao, Zhongxin, Xia, Baorui, Herng, Tun Seng, Ding, Jun, Gao, Daqiang
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container_issue 22
container_start_page 225001
container_title Journal of physics. D, Applied physics
container_volume 55
creator Zhang, Haiyi
Liao, Zhongxin
Xia, Baorui
Herng, Tun Seng
Ding, Jun
Gao, Daqiang
description The realization of intrinsic two-dimensional (2D) magnetic materials with high Curie temperature is one of the prevalent research directions in spintronics. Here, a 2D ferromagnet of Mn-N 4 embedded graphene is reported, where the single Mn atom dispersed Mn-N 4 structure is confirmed by extended x-ray absorption fine structure and high-angle annular dark-field scanning transmission electron microscopy results. Magnetic measurements demonstrate that the Mn-N 4 embedded graphene exhibits robust room-temperature ferromagnetism, and the x-ray magnetic circular dichroism results reveal that the magnetic moments come from the embedded Mn atoms. Furthermore, using first-principle calculations, we demonstrate that the Mn-N 4 architecture is the source of the magnetism and the long-range magnetic ordering is favored in such coordination systems.
doi_str_mv 10.1088/1361-6463/ac4c5a
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title Ferromagnetism of Mn-N 4 architecture embedded graphene
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