Janus Cr2BN Monolayer with Ferroelectricity and Room-Temperature Ferromagnetism.
Chemphyschem
; : e202400538, 2024 May 28.
Article
em En
| MEDLINE
| ID: mdl-38805005
ABSTRACT
Janus monolayers, a special kind of two-dimensional materials, offer an exciting platform for the development of novel electronic/spintronic devices because of their out-of-plane asymmetry. Herein, we propose a sandwich liked Janus tetragonal Cr2BN monolayer with ferroelectricity and ferromagnetism through first-principles calculations. The predicted magnetic moment is up to ~3.0â
µB/Cr originating from the distorted square crystal field induced by out-of-plane asymmetry. The Cr2BN monolayer possesses an intrinsic ferromagnetism with a high Curie temperature of 383â
K and a sizeable magnetic anisotropy energy of 171â
µeV/Cr. Its robust ferromagnetism, dominating by the multi-anion mediated super-exchange interactions, can even resist -5 % ~5 % biaxial strain. Its large cohesive energy and high dynamical/thermal stability provide a strong feasibility for experimental synthesis. These intriguing properties render the Cr2BN monolayer a promising material for nanoscale spintronic devices.
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MEDLINE
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En
Ano de publicação:
2024
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Article