C4N3BN Half-Metallic Monolayer with Persistent Magnetism

The monolayer C4N3BN, short for s-triazine g-C4N3 with B and pyrrolic N tailored at vacant sites, is investigated under in-plane strain, with a focus on its magnetism. Our density functional study shows that the half-metallic ground state and ferrimagnetic order persist up to considerable strain fro...

Full description

Saved in:
Bibliographic Details
Published in:Journal of electronic materials 2025-02, Vol.54 (2), p.970-976
Main Authors: Tran, Minh-Tien, Hoang, Trinh X., Nguyen, Huy-Viet, Van Hy, Nguyen, Duy, Tran Khanh, Trong, Bui Duc, Phong, Pham Nam
Format: Article
Language:English
Subjects:
Carbon
Carbon nitride
Charge transfer
Electrons
Energy
Ferromagnetism
Magnetism
Monolayers
Physics
Plane strain
Semiconductors
Unit cell
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The monolayer C4N3BN, short for s-triazine g-C4N3 with B and pyrrolic N tailored at vacant sites, is investigated under in-plane strain, with a focus on its magnetism. Our density functional study shows that the half-metallic ground state and ferrimagnetic order persist up to considerable strain from −7% to 10%, and temperatures as high as 900 K. At the critical uniaxial strain of approximately −9.30% and 10.90%, or symmetric biaxial strain of −7.62% and 17.38%, this ferrimagnetic half-metal turns into ferromagnetic semiconductors, all with the magnetization 1 μB per unit cell. We present a simple explanation for that metamagnetism in the system by means of spin charge transfer and by counting its atomic valencies in the unit cell. Our finding adds to and enriches physicochemical understanding of the magnetism in carbon nitride-based half-metals.
ISSN:0361-5235
1543-186X
DOI:10.1007/s11664-024-11559-y