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Erschienen in: Journal of Materials Science 23/2021

16.05.2021 | Electronic materials

Ferromagnetic half-metal with high Curie temperature: Janus Mn2PAs monolayer

verfasst von: Hanghang Zeng, Shuo Jin, Jiahui Wang, Yan Hu, Xiaoli Fan

Erschienen in: Journal of Materials Science | Ausgabe 23/2021

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Abstract

Two-dimensional (2D) Janus materials with mirror asymmetry exhibit fascinating physical properties, implying wide applications in nanoscale optoelectronic and piezoelectric devices. However, intrinsic ferromagnetic (FM) Janus monolayers with high Curie temperature (Tc) and large magnetic anisotropic energy (MAE) are rarely reported. By performing the first-principles calculations, the electronic structure and magnetic properties of stable Janus Mn2PAs monolayer were investigated. We found that Mn2PAs monolayer is FM half-metal with high Tc of 557 K and easy out-of-plane magnetization axis, as well as a small intrinsic electric polarization. Additionally, Mn2PAs monolayer under biaxial strain from -10% to 10% remains to be FM half-metallic. More importantly, the MAE reaches a maximum value of ~ 578 μeV per Mn atom under 8% tensile strain and changes direction under compressive strain larger than 2%, which mainly attributes to the variation of (py, pz)/(py, px) orbital matrix elements of As/P atom. The desired and robust ferromagnetism and half-metallicity with 100% spin-polarization of Janus Mn2PAs monolayer enrich the application of 2D Janus materials in nanoscale spintronic devices.
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Metadaten
Titel
Ferromagnetic half-metal with high Curie temperature: Janus Mn2PAs monolayer
verfasst von
Hanghang Zeng
Shuo Jin
Jiahui Wang
Yan Hu
Xiaoli Fan
Publikationsdatum
16.05.2021
Verlag
Springer US
Erschienen in
Journal of Materials Science / Ausgabe 23/2021
Print ISSN: 0022-2461
Elektronische ISSN: 1573-4803
DOI
https://doi.org/10.1007/s10853-021-06158-9

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