Ferromagnetism in nitrogen-doped graphene

Babar, Rohit; Kabir, Mukul

doi:10.1103/physrevb.99.115442

Cited by 50 publications

(43 citation statements)

References 89 publications

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“…Density functional calculations suggest that, under certain configuration and concentration, nitrogen can induce magnetism in graphene [141,142]. Only recently mass magnetic susceptibility measurements have demonstrated the ferromagnetism induced by graphitic nitrogen dopant in graphene [143].…”

Section: Discussion and Perspectivesmentioning

confidence: 99%

Electronic properties of chemically doped graphene

Joucken

Henrard

Lagoute

2019

Phys. Rev. Materials

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Chemical doping of graphene is the most robust way of modifying graphene's electronic properties. We review here the results obtained so far on the electronic structure and transport properties of chemically-doped graphene, focusing on the results obtained with scanning tunneling micropscopy/spectroscopy (STM/S), angle-resolved photoemission spectroscopy (ARPES), and magnetoresistance (MR) measurements. The majority of the results reported have been obtained on nitrogendoped samples, but boron-doped graphene has also been well documented. Besides the appearance of the dopant on STM topographic images, the main questions that have been addressed are the atomic configurations of the doping and their doping efficiency (number of electron/hole brought to the graphene lattice). Both can be addressed by a local probe such as STM/S. The doping efficiency has also been complementary studied via direct visualization of the band structure with ARPES. The effect of the dopants on the electronic transport properties and in particular their influence on the scattering mechanisms is also presented. Finally, avenues for future research efforts are suggested.

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Section: Discussion and Perspectivesmentioning

confidence: 99%

Electronic properties of chemically doped graphene

Joucken

Henrard

Lagoute

2019

Phys. Rev. Materials

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“…For example, doped‐nitrogen atoms has a significant influence on the magnetism of graphene. The presence of pyrrolic N and defects induced local magnetic moments by indirect magnetic coupling, [27] while the graphitic nitrogen induced delocalized magnetic moment by offering transferable π electrons [28] . Both local and delocalized magnetic moments result in the ferromagnetic response of nitrogen‐doped graphene.…”

Section: A Brief Knowledge For Emi Shielding/absorbingmentioning

confidence: 99%

Design and Synthesis Strategies: 2D Materials for Electromagnetic Shielding/Absorbing

Zhang

Shuai

et al. 2021

Chemistry An Asian Journal

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Two‐dimensional (2D) materials possess special physical and chemical properties. They have been proved to have potential application advantage in the microwave absorption (MA) and electromagnetic interference (EMI) shielding. Particularly, they exhibit positive shielding and absorbing response to EMI. Here, the research progress of preparation, electromagnetic performance and microwave shielding/absorbing mechanisms of 2D composite materials are introduced. Effective preparation routes including introducing heteroatoms, constructing unique structures and 2D composite materials are described. Furthermore, the application prospects and challenges for the development of novel EMI materials are expatiated.

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“…The defects can be either voids or impurities splitting the spin-up and spin-down states at the Fermi level ( ) and inducing a magnetic moment 11 – 14 . One method used to create void defects in graphene is by doping N atoms where the voids are surrounded by N atoms, then N-doped graphene becomes magnetic 15 , 16 . Although, high doping, void, and passivation concentrations lead to phase instability limiting amounts of spin density in graphene 17 – 19 .…”

Section: Introductionmentioning

confidence: 99%

“…For instance, g- is a magnetic phase with one Bohr magneton ( ) per unit cell 20 , 21 , and bears 2 per unit cell of magnetization 4 . and are magnetic phases while , N, and are non-magnetic 4 , 15 . Their magnetism arises from an unpaired electron contributing a magnetic moment to a system.…”

Section: Introductionmentioning

confidence: 99%

Presence and absence of intrinsic magnetism in graphitic carbon nitrides designed through C–N–H building blocks

Pakornchote

Ektarawong

Sukserm

et al. 2022

Sci Rep

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We use the first principle calculation to investigate the intrinsic magnetism of graphitic carbon nitrides (GCNs). By preserving three-fold symmetry, the GCN building blocks have been built out of different combinations between 6 components which are C atom, N atom, s-triazine, heptazine, heptazine with C atom at the center, and benzimidazole-like component. That results in 20 phases where 11 phases have been previously reported, and 9 phases are newly derived. The partial density of states and charge density have been analyzed through 20 phases to understand the origin of the presence and absence of intrinsic magnetism in GCNs. The intrinsic magnetism will be present not only because the GCNs comprising of radical components but also the $$\pi$$ π -conjugated states are not the valence maximum to break the delocalization of unpaired electrons. The building blocks are also employed to study alloys between g-$$\hbox {C}_3\hbox {N}_4$$ C 3 N 4 and g-$$\hbox {C}_4\hbox {N}_3$$ C 4 N 3 . The magnetization of the alloys has been found to be linearly dependent on a number of C atoms in the unit cell and some magnetic alloys are energetically favorable. Moreover, the intrinsic magnetism in GCNs can be promoted or demoted by passivating with a H atom depending on the passivated positions.

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Ferromagnetism in nitrogen-doped graphene

Cited by 50 publications

References 89 publications

Electronic properties of chemically doped graphene

Electronic properties of chemically doped graphene

Design and Synthesis Strategies: 2D Materials for Electromagnetic Shielding/Absorbing

Presence and absence of intrinsic magnetism in graphitic carbon nitrides designed through C–N–H building blocks

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