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Fan D, Wang Z, Yin M, Li H, Hu H, Guo F, Feng Z, Li J, Zhang D, Li Z, Zhu M. The metal atomic substitution induced half-metallic properties, metallic properties and semiconducting properties in X-N 4 nanoribbons. Phys Chem Chem Phys 2023; 25:31257-31269. [PMID: 37955269 DOI: 10.1039/d3cp03983h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2023]
Abstract
Armchair X-N4 nanoribbons (X-AN4NRs) and zigzag X-N4 nanoribbons (X-ZN4NRs) were calculated using first-principles calculations. Ferromagnets (FM) were found to be the most stable among the initial magnetic structures. Furthermore, nanoribbons were found to be thermodynamically stable through molecular dynamics simulations. It can be found that when the temperature and total energy of X-AN4NRs and X-ZN4NRs change with time, they have a small oscillation range, which confirms the dynamic stability of X-AN4NRs and X-ZN4NRs under realistic experimental conditions. Subsequently, the magnetic moment analysis of the X-AN4NRs and X-ZN4NRs revealed that the magnetic moment of the X-AN4NRs is significantly smaller than that of X-ZN4NRs. The band structure and density of states (DOS) of the X-AN4NRs and X-ZN4NRs were also computed, which indicate different properties for different transition metal nanoribbons. The results suggest that different edge structures and transition metals can influence the electronic structure of the nanoribbons. Moreover, based on the band structure and DOS, it was found that Mn-AN4NRs and Fe-ZN4NRs exhibit half-metallic properties. They can generate 100% polarized currents at the Fermi level, providing valuable information for developing spintronic devices. Our study has a positive value for regulating the properties of the nanoribbons by metal atom substitution.
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Affiliation(s)
- Dong Fan
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Zhihao Wang
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Maoye Yin
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Hengshuai Li
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Haiquan Hu
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Feng Guo
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Zhenbao Feng
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Jun Li
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, China
| | - Dong Zhang
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Zhi Li
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Minghui Zhu
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
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2
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Fan D, Yin M, Zhu M, Li H, Wang Z, Hu H, Guo F, Feng Z, Li J, Hu X, Zhang D, Li Z. Tailored modifications of the electronic properties of g-C 3N 4/C 2N- h2D nanoribbons by first-principles calculations. Phys Chem Chem Phys 2023; 25:1153-1160. [PMID: 36519563 DOI: 10.1039/d2cp05394b] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
The electronic structure of g-C3N4/C2N-h2D nanoribbons was investigated by first-principles calculations. As a splice structure, we first computed the three magnetic coupled states of g-C3N4/C2N-h2D nanoribbons. After self-consistent calculations, both the antiferromagnetic and paramagnetic coupling states become ferromagnetic coupling states. It was proved that the ferromagnetic coupling state is the most stable state. Thermodynamic stability was subsequently verified based on the ferromagnetic coupling state. It had a steady electron spin polarization, with a magnetic moment of 1 μB for each primitive cell. It changed from a direct band-gap semiconductor to an indirect band-gap semiconductor and exhibited the properties of a narrow band gap semiconductor through the analysis of the energy band and charge density. To transform the electronic structure, we adsorbed different transition metals in g-C3N4/C2N-h2D nanoribbons. We investigated the electronic structure of g-C3N4/C2N-h2D nanoribbons adsorbed by different transition metals. It was shown that the electronic structure of g-C3N4/C2N-h2D nanoribbons could be regulated by the adsorption of different transition metal atoms. Moreover, the adsorption of Fe and Ni can generate a 100% polarized current in the Fermi surface, which will provide more application potential for spintronics devices.
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Affiliation(s)
- Dong Fan
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Maoye Yin
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Minghui Zhu
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Hengshuai Li
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Zhihao Wang
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Haiquan Hu
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Feng Guo
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Zhenbao Feng
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Jun Li
- School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng, 252000, China
| | - Xiaocheng Hu
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Dong Zhang
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
| | - Zhi Li
- School of Physics Science and Information Technology & Shandong Key Laboratory of Optical Communication Science and Technology, Liaocheng University, Liaocheng, 252000, China.
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Liu Y, Guo L. Adsorption mechanisms of different toxic molecular gases on intrinsic C 2N and Ti-C 2N -V monolayer: a DFT study. J Mol Model 2022; 28:289. [PMID: 36057016 DOI: 10.1007/s00894-022-05273-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 08/12/2022] [Indexed: 10/14/2022]
Abstract
Recently, the excessive emission of chemical toxic gases such as nitrogen trifluoride (NF3), ammonia (NH3), phosgene (COCL2), and benzene (C6H6) has caused serious environmental problems. Adsorption of these chemical toxic gas molecules is a promising method to reduce environmental pollution. In this work, density functional theory (DFT) calculations are used to investigate the adsorption properties of these chemical toxic molecules on intrinsic C2N and Ti-C2N-V monolayer. The results show that NF3, NH3, C6H6, and COCL2 can all be adsorbed to the intrinsic C2N monolayer with weak adsorption energy, while the adsorption properties of these gas molecules were greatly improved after doping Ti atom. The adsorption energy of NH3, C6H6, COCL2, and NF3 increased from - 0.585, - 0.432, - 0.633, and - 0.362 eV to - 2.214, - 1.699, - 1.822, and - 0.799 eV, respectively, which increased by 2 ~ 4 times compared with that before doping. Besides, the results of the electron distribution, work function, the total density of states (TDOS), and the partial density of states (PDOS) analysis indicate that the doped Ti atom can be used as a bridge to connect the adsorbed molecules with the C2N-V monolayer, strengthen their interaction, and significantly improve the adsorption capacity. Therefore, Ti-doped C2N-V (Ti-C2N-V) monolayer is a promising adsorbent for the enrichment and utilization of harmful gases.
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Affiliation(s)
- Yan Liu
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, 610065, Sichuan, China
| | - Lifen Guo
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, 610065, Sichuan, China. .,School of Electronic and Information, Zhongyuan University of Technology, Zhengzhou, 450007, Henan, China.
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4
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Shi Z, Shao W, Rao L, Xing X, Zhou Y, Ren X, Yang Q. Pressure-induced structure, elasticity, intrinsic hardness and ideal strength of tetragonal C 4N. Phys Chem Chem Phys 2022; 24:5171-5184. [PMID: 35166285 DOI: 10.1039/d1cp05163f] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tetragonal C4N (t-C4N) structure was predicted via CALYPSO code, and the effects of pressure on its structural and mechanical properties were studied. The results show that t-C4N is different from various 2D CxNy compounds with a new type 3D crystal structure, which is similar to diamond. Bulk t-C4N is equipped with excellent elastic properties. When the pressure is increased from 0 GPa to 350 GPa, its bulk modulus B, shear modulus G and Young's modulus E are increased from 426.9 GPa to 1123.1 GPa, 371.4 GPa to 582.9 GPa and 863.7 GPa to 1490.9 GPa, respectively. The anisotropic Bmax, Gmax and Emax are increased from 582.38 GPa to 1751.41 GPa, 478.29 GPa to 1033.97 GPa and 1281.26 GPa to 2490.14 GPa, respectively. When the pressure is 0 GPa, the hardness calculated by Chen's and Tian's models are 51.15 GPa and 51.81 GPa, respectively. Its ideal tensile strength in [111] orientation is the smallest (63.46 GPa), which indicates that the (111) planes allow easy cleavage. The smallest ideal shear strength (67.98 GPa) can be obtained in the (111)[11̄0] orientation, which suggests its theoretical hardness is about 67.98 GPa. Due to its excellent mechanical properties, t-C4N can be used as an industrial superhard material.
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Affiliation(s)
- Zhijun Shi
- State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, P. R. China. .,State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, P. R. China
| | - Wei Shao
- State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, P. R. China.
| | - Lixiang Rao
- State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, P. R. China.
| | - Xiaolei Xing
- College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Yefei Zhou
- College of Mechanical Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
| | - Xuejun Ren
- School of Engineering, Liverpool John Moores University, Liverpool L3 3AF, UK
| | - Qingxiang Yang
- State Key Laboratory of Metastable Materials Science & Technology, Yanshan University, Qinhuangdao 066004, P. R. China.
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Yang B, Li Z, Fan R, Ma J. A DFT study on the adsorption of SO 2 on Al x-C 2N ( x = 1, 2) monolayer. MOLECULAR SIMULATION 2020. [DOI: 10.1080/08927022.2020.1778172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Biao Yang
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, People’s Republic of China
| | - Zhiwei Li
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, People’s Republic of China
| | - Rujing Fan
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, People’s Republic of China
| | - Jianyi Ma
- Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, People’s Republic of China
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6
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Tsoeu SE, Opoku F, Govender PP. Tuning the electronic, optical and structural properties of GaS/C2N van der Waals heterostructure for photovoltaic application: first-principle calculations. SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-2091-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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7
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Tromer RM, Freitas A, Felix IM, Mortazavi B, Machado LD, Azevedo S, Pereira LFC. Electronic, optical and thermoelectric properties of boron-doped nitrogenated holey graphene. Phys Chem Chem Phys 2020; 22:21147-21157. [PMID: 32926043 DOI: 10.1039/d0cp02869j] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We employ first principles calculations to investigate the electronic, optical, and thermoelectric properties of ten boron-doped nitrogenated holey graphene (NHG) monolayers. We find that most of the proposed structures remain stable during ab initio molecular dynamics simulations, in spite of their increased formation energies. Density functional theory calculations employing a hybrid functional predict band gaps ranging from 0.73 eV to 2.30 eV. In general, we find that boron doping shifts optical absorption towards the visible spectrum, and also reduces light reflection in this region. On the other hand, the magnitude of optical absorption coefficients are reduced. Regarding the thermoelectric properties, we predict that boron doping can enhance the figure of merit ZT of NHG by up to 55%. Our results indicate that boron-doped NHG monolayers may find application in solar cells and thermoelectric devices.
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Affiliation(s)
- Raphael M Tromer
- Departamento de Física, Universidade Federal do Rio Grande do Norte, Natal, 59078-970, Brazil.
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8
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Xiang H, Xu B, Zhao W, Xia Y, Yin J, Zhang X, Liu Z. The magnetism of 1T-MX2 (M = Zr, Hf; X = S, Se) monolayers by hole doping. RSC Adv 2019; 9:13561-13566. [PMID: 35519557 PMCID: PMC9063905 DOI: 10.1039/c9ra01218d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 04/16/2019] [Indexed: 11/22/2022] Open
Abstract
The magnetism of hole doped 1T-MX2 (M = Zr, Hf; X = S, Se) monolayers is systematically studied by using first principles density functional calculations. The pristine 1T-MX2 monolayers are semiconductors with nonmagnetic ground states, which can be transformed to ferromagnetic states by the approach of hole doping. For the unstrained monolayers, the spontaneous magnetization appears once above the critical hole density (1014 cm−2), where the p orbital of S or Se atoms contributes the most of the magnetic moment. As the tensile strains exceed 4%, the magnetic moments per hole of ZrS2 and HfS2 monolayers increase sharply to a saturated value with increasing hole density, implying obvious advantages over the unstrained monolayers. The phonon dispersion calculations for the strained ZrS2 and HfS2 monolayers indicate that they can keep the dynamical stability by hole doping. Furthermore, we propose that the fluorine atom modified ZrS2 monolayer could obtain stable ferromagnetism. The magnetism in hole doped 1T-MX2 (M = Zr, Hf; X = S, Se) monolayers has great potential for developing spintronic devices with desirable applications. The magnetism of zirconium and hafnium dichalcogenides by hole doping is studied by using first principles calculations.![]()
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Affiliation(s)
- Hui Xiang
- School of Mathematics and Physics
- Hubei Polytechnic University
- Huangshi
- China
- National Laboratory of Solid State Microstructures
| | - Bo Xu
- School of Sciences
- Key Laboratory of Biomedical Functional Materials
- China Pharmaceutical University
- Nanjing
- China
| | - Weiqian Zhao
- School of Mathematics and Physics
- Hubei Polytechnic University
- Huangshi
- China
| | - Yidong Xia
- National Laboratory of Solid State Microstructures
- Department of Materials Science and Engineering
- Nanjing University
- Nanjing
- China
| | - Jiang Yin
- National Laboratory of Solid State Microstructures
- Department of Materials Science and Engineering
- Nanjing University
- Nanjing
- China
| | - Xiaofei Zhang
- School of Mathematics and Physics
- Hubei Polytechnic University
- Huangshi
- China
| | - Zhiguo Liu
- National Laboratory of Solid State Microstructures
- Department of Materials Science and Engineering
- Nanjing University
- Nanjing
- China
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9
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Ding Y, Wang Y. Tunable electronic and magnetic properties of graphene-like XYBe3 (XY = BN, AlN, SiC, GeC) nanosheets with carrier doping: a first-principles study. Phys Chem Chem Phys 2018; 20:6830-6837. [DOI: 10.1039/c7cp06862j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Graphyne-like ternary beryllide nanosheets are found to be promising host materials because of their carrier-induced tunable magnetism and half-metallicity.
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Affiliation(s)
- Yi Ding
- Department of Physics
- Hangzhou Normal University
- Hangzhou
- People's Republic of China
| | - Yanli Wang
- Department of Physics
- Center for Optoelectronics Materials and Devices
- Zhejiang Sci-Tech University
- Xiasha College Park
- Hangzhou
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Kishore MA, Ravindran P. Enhanced Photocatalytic Water Splitting in a C2N Monolayer by C-Site Isoelectronic Substitution. Chemphyschem 2017; 18:1526-1532. [DOI: 10.1002/cphc.201700165] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Indexed: 11/11/2022]
Affiliation(s)
- M.R. Ashwin Kishore
- Department of Physics; Central University of Tamil Nadu; Thiruvarur Tamil Nadu 610101 India
- Simulation Center for Atomic and Nanoscale MATerials (SCANMAT); Central University of Tamil Nadu; Thiruvarur Tamil Nadu 610101 India
| | - P. Ravindran
- Department of Physics; Central University of Tamil Nadu; Thiruvarur Tamil Nadu 610101 India
- Simulation Center for Atomic and Nanoscale MATerials (SCANMAT); Central University of Tamil Nadu; Thiruvarur Tamil Nadu 610101 India
- Department of Materials Science, Central; University of Tamil Nadu; Thiruvarur Tamil Nadu 610101 India
- Center for Materials Science and Nanotechnology and Department of Chemistry; University of Oslo; Box 1033 Blindern 0315 Oslo Norway
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11
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Xiang H, Xu B, Xia Y, Yin J, Liu Z. Strain tunable magnetism in SnX 2 (X = S, Se) monolayers by hole doping. Sci Rep 2016; 6:39218. [PMID: 27991527 PMCID: PMC5171787 DOI: 10.1038/srep39218] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 11/21/2016] [Indexed: 11/14/2022] Open
Abstract
By first-principles calculations, the magnetism of hole doped tin dichalcogenides SnX2 (X = S, Se) monolayers is systematically studied. It is found that a phase transition from nonmagnetic to ferromagnetic ground state appears once above the critical hole density (~1014 cm−2). The spin magnetic moment can maintain a magnitude of 1.0 μB/hole with excellent stability of ferromagnetic state. Furthermore, we demonstrate that strain is very useful to modulate the DOS near the valence band, resulting in the reduction of the critical hole density to ~1013 cm−2 when the strain reaches 4% (6%) in SnS2 (SnSe2), which can be realized in common field effect transistors. Moreover, the phonon dispersion calculations for the strained SnX2 monolayers indicate that they can keep the dynamical stability under the hole doping. Therefore, the strain tunable magnetic transition in hole doped tin dichalcogenides indicates their potential promising applications in spintronic devices.
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Affiliation(s)
- Hui Xiang
- National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, China
| | - Bo Xu
- National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, China
| | - Yidong Xia
- National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, China
| | - Jiang Yin
- National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
| | - Zhiguo Liu
- National Laboratory of Solid State Microstructures and Department of Materials Science and Engineering, Nanjing University, Nanjing, 210093, China.,Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China
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12
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Du J, Xia C, Xiong W, Zhao X, Wang T, Jia Y. Tuning the electronic structures and magnetism of two-dimensional porous C2N via transition metal embedding. Phys Chem Chem Phys 2016; 18:22678-86. [DOI: 10.1039/c6cp03210a] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on first-principles calculations, the electronic structures and magnetism are investigated in 3d transition metal (TM)-embedded porous two-dimensional (2D) C2N monolayers.
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Affiliation(s)
- Juan Du
- Department of Physics
- Henan Normal University
- Xinxiang
- China
| | - Congxin Xia
- Department of Physics
- Henan Normal University
- Xinxiang
- China
| | - Wenqi Xiong
- Department of Physics
- Henan Normal University
- Xinxiang
- China
| | - Xu Zhao
- Department of Physics
- Henan Normal University
- Xinxiang
- China
| | - Tianxing Wang
- Department of Physics
- Henan Normal University
- Xinxiang
- China
| | - Yu Jia
- School of Physics and Engineering
- Zhengzhou University
- Zhengzhou 450001
- China
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