1
|
Chen D, Wang C, Peng C. Li-ion intercalation-driven control of two-dimensional magnetism in van der Waals FePS 3 bilayers. Phys Chem Chem Phys 2024; 26:8436-8447. [PMID: 38410084 DOI: 10.1039/d3cp04722a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Abstract
Manipulating two-dimensional (2D) magnetism in layered van der Waals (vdW) materials like FePS3 (FPS), with its wide-ranging applications in flexible spintronic devices, poses a persistent challenge. Through first-principles calculations, we have achieved reversible ferrimagnetic (FiM, FePS3 bilayer) ↔ antiferromagnetic (AFM, 1Li-intercalated FePS3 bilayer) ↔ ferromagnetic (FM, 2Li-intercalated FePS3 bilayer) phase transitions by using a Li-ion intercalation method. Intercalated Li ions significantly enhance the Fe-3d and S-3p hybridization and reduce the Fe-Fe, Li-Fe, Li-S, and Li-P bond lengths. The manipulation of 2D magnetism in Li-intercalated FPS bilayers can be attributed to the charge transfer between two FPS monolayers mediated by Li ions. Moreover, this study offers insights into the underlying physical mechanisms that govern the variations of electronic structures, 2D magnetism, magnetic anisotropy energy, and exchange couplings. Our reversible Li-ion intercalation permits straightforward de-intercalation using a two-step route, thereby reinstating the initial magnetic order of the FPS bilayer. Our purpose-designed FPS bilayer with different Li concentrations and robust exchange coupling not only enriches the Li-intercalation physics in the FPS system but also offers a general pathway for manipulating 2D magnetism in Fe-based vdW trisulfides.
Collapse
Affiliation(s)
- Dong Chen
- College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, P. R. China.
| | - Chunlei Wang
- College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, P. R. China.
| | - Chengxiao Peng
- Institute for Computational Materials Science, International Joint Research Laboratory of New Energy Materials and Devices of Henan Province, School of Physics and Electronics, Henan University, Kaifeng 475004, P. R. China
| |
Collapse
|
4
|
Ji B, Wu K, Chen Y, Wang F, Rossini AJ, Zhang B, Wang J. Ba 6(Cu xZ y)Sn 4S 16 (Z = Mg, Mn, Zn, Cd, In, Bi, Sn): High Chemical Flexibility Resulting in Good Nonlinear-Optical Properties. Inorg Chem 2022; 61:2640-2651. [PMID: 35080173 DOI: 10.1021/acs.inorgchem.1c03773] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Seven acentric sulfides Ba6(CuxZy)Sn4S16 (Z = Mg, Mn, Zn, Cd, In, Bi, Sn) were grown by a high-temperature salt flux method. The crystal structures of the Ba6(CuxZy)Sn4S16 (Z = Mg, Mn, Zn, Cd, In, Bi, Sn) compounds were determined by single-crystal X-ray diffraction with the aid of solid-state NMR spectroscopy. The Ba6(CuxZy)Sn4S16 (Z = Mg, Mn, Zn, Cd, In, Bi) compounds are isostructural and crystallize in the Ba6Ag4Sn4S16 structure type. The Sn-containing compound exhibits high structural similarity to Ba6(CuxZy)Sn4S16 (Z = Mg, Mn, Zn, Cd, In, Bi) with the presence of an interstitial atomic position partially occupied by Sn atoms. The chemical bonding characteristics of Ba6(Cu2.9Sn0.4)Sn4S16 were understood with electron localization function calculations coupled with crystal orbital Hamilton population calculations. The Ba-S and Cu-S interactions are dominantly ionic, but the Sn-S interactions consist of strong covalent bonding characteristics in Ba6(Cu2.9Sn0.4)Sn4S16. The monovalent Cu atoms, mixed with certain metals with various oxidation states, significantly shift the optical properties of the Ba6(CuxZy)Sn4S16 (Z = Mg, Mn, Zn, Cd, In, Bi) compounds. This results in a good balance between the second-harmonic-generation (SHG) response and laser damage threshold (LDT). Ba6(Cu1.9Zn1.1)Sn4S16 possesses a high SHG response and a high LDT of 2.8 × AGS and 3 × AGS, respectively. A density functional theory calculation revealed that CuS4 and SnS4 tetrahedra significantly contribute to the SHG response in Ba6(Cu2Mg)Sn4S16, which also confirmed that CuS4 tetrahedra are crucial for the stability and optical properties of the Ba6(CuxZy)Sn4S16 (Z = Mg, Mn, Zn, Cd, In, Bi, Sn) compounds revealed by electronic structure analysis.
Collapse
Affiliation(s)
- Bingheng Ji
- Department of Chemistry and Biochemistry, Wichita State University, Wichita, Kansas 67260, United States
| | - Kui Wu
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Yunhua Chen
- U.S. Department of Energy Ames Laboratory, Ames, Iowa 50011, United States.,Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Fei Wang
- Department of Chemistry, Missouri State University, Springfield, Missouri 65897, United States
| | - Aaron J Rossini
- U.S. Department of Energy Ames Laboratory, Ames, Iowa 50011, United States.,Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States
| | - Bingbing Zhang
- Key Laboratory of Analytical Science and Technology of Hebei Province, College of Chemistry and Environmental Science, Hebei University, Baoding 071002, China
| | - Jian Wang
- Department of Chemistry and Biochemistry, Wichita State University, Wichita, Kansas 67260, United States
| |
Collapse
|
6
|
Cicirello G, Wu K, Wang J. Synthesis, crystal structure, linear and nonlinear optical properties of quaternary sulfides Ba6(Cu2X)Ge4S16 (X=Mg, Mn, Cd). J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2021.122226] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
|
7
|
Chen D, Wang CL. Magnetism manipulated by ferroelectric polarization and epitaxial strain in a La 0.75Sr 0.25MnO 3/BaTiO 3 system. Phys Chem Chem Phys 2021; 23:6154-6161. [PMID: 33686385 DOI: 10.1039/d0cp05961g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Exploring the manipulation of magnetism in perovskite oxides is scientifically interesting and of great technical importance in next-generation magnetic memory. Dual control of magnetism in superlattices through epitaxial strain and ferroelectric polarization may induce rich physical properties. In this work, we demonstrated a strong magnetoelectric coupling that appears in an La0.75Sr0.25MnO3/BaTiO3 superlattice. Reversible transitions in ferromagnetism, ferrimagnetism and anti-ferromagnetism, with strong magnetoelectric coupling, are achieved by precisely controlling the magnitude and spin-direction of the magnetic moments of Mn. Half-metallicity is demonstrated in the MnO2 layers, accompanied by the spin polarization of the superlattice varying from 100% to 0%. We realize the coexistence of ferroelectric polarization and metallicity, i.e., "ferroelectric metal". The variation in strain and re-orientation of polarization lead to a change in interfacial Ti-O and Mn-O bond lengths, and hence a hybridization state, determining the magnetism of our system. The purpose-designed LSMO/BTO superlattice with intrinsic magnetoelectric coupling is a particularly interesting model system that can provide guidance for the development of spintronic devices.
Collapse
Affiliation(s)
- Dong Chen
- College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China.
| | - Chun-Lei Wang
- College of Physics and Electronic Engineering, Xinyang Normal University, Xinyang 464000, China.
| |
Collapse
|
8
|
Li Y, Song X, Liu Y, Guo Y, Sun Y, Ji M, You Z, An Y. Syntheses, structures, and photocatalytic properties of open-framework Ag-Sn-S compounds. Dalton Trans 2020; 49:11708-11714. [PMID: 32789373 DOI: 10.1039/d0dt02513e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Four open-framework Ag-Sn-S compounds K2Ag2Sn2S6 (1); K2Ag2SnS4 (2); Rb2Ag2SnS4 (3); and Cs2Ag2SnS4 (4) have been synthesized using a solvothermal method. Compound 1 possesses a unique three-dimensional (3D) structure in which Ag+ ions are two-coordinated. Compounds 2-4 have the same layered structure in which Ag+ ions are tetrahedrally coordinated. Photocatalytic degradation properties of methylene blue have been investigated and compound 1 displays excellent photodegradation activities. The photoelectric response properties, optical properties, and theoretical calculations of these compounds have also been studied.
Collapse
Affiliation(s)
- Yanhua Li
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China.
| | - Xuedan Song
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China.
| | - Yan Liu
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China.
| | - Yongkang Guo
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China.
| | - Yu Sun
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China.
| | - Min Ji
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China.
| | - Zhonglu You
- Department of Chemistry and Chemical Engineering, Liaoning Normal University, Dalian 116029, PR China.
| | - Yonglin An
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China.
| |
Collapse
|