Yufeng Guo and Wanlin Guo. Magnetism in Oxygen-Functionalized Hexagonal Boron Nitride Nanosheet on Copper Substrate. J. Phys. Chem. C 119, 873 (2015)

J. Phys. Chem. C
Yufeng Guo and Wanlin Guo J. Phys. Chem. C 119, 873 (2015) DOI: 10.1021/jp5122799
Magnetism in Oxygen-Functionalized Hexagonal Boron Nitride Nanosheet on Copper Substrate

wlguo@nuaa.edu.cn
State Key Laboratory of Mechanics and Control of Mechanical Structures, Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education and Institute of Nanoscience, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People's Republic of China

Abstract

Wide-bandgap hexagonal boro n nitride (h-BN) nanosheets, white graphene, can be uniformly grown on conducting Cu foils with high quality. Here, we show that h-BN monolayers on Cu substrates exhibit ferromagnetic, antiferromagnetic, or ferrimagnetic properties with ozone (O3) molecules or oxygen−hydrogen (O−H2)groups
bonded on its B atoms, depending on the adsorption density and configuration of these
functional groups. The magnetisms in the O3- and O−H2-functionalized h-BN sheets
originate from unpaired electrons in the ozone molecule and electrons transferred from
the H2 molecule to the O atom, respectively. The Cu substrate plays an essential role in stabilizing the chemisorption of O3or O−H2 on the h-BN sheets. Magnetic composite
structures composed of Cu, h-BN, and oxygen provide a feasible route to facilitate the
design of two-dimensional h-BN-based spin devices.

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