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Mikhlin Y, Likhatski M, Borisov R, Karpov D, Vorobyev S. Metal Chalcogenide-Hydroxide Hybrids as an Emerging Family of Two-Dimensional Heterolayered Materials: An Early Review. MATERIALS (BASEL, SWITZERLAND) 2023; 16:6381. [PMID: 37834518 PMCID: PMC10573794 DOI: 10.3390/ma16196381] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 09/19/2023] [Accepted: 09/19/2023] [Indexed: 10/15/2023]
Abstract
Two-dimensional (2D) materials and phenomena attract huge attention in modern science. Herein, we introduce a family of layered materials inspired by the minerals valleriite and tochilinite, which are composed of alternating "incompatible", and often incommensurate, quasi-atomic sheets of transition metal chalcogenide (sulfides and selenides of Fe, Fe-Cu and other metals) and hydroxide of Mg, Al, Fe, Li, etc., stacked via electrostatic interaction rather than van der Waals forces. We survey the data available on the composition and structure of the layered minerals, laboratory syntheses of such materials and the effect of reaction conditions on the phase purity, morphology and composition of the products. The spectroscopic results (Mössbauer, X-ray photoelectron, X-ray absorption, Raman, UV-vis, etc.), physical (electron, magnetic, optical and some others) characteristics, a specificity of thermal behavior of the materials are discussed. The family of superconductors (FeSe)·(Li,Fe)(OH) having a similar layered structure is briefly considered too. Finally, promising research directions and applications of the valleriite-type substances as a new class of prospective multifunctional 2D materials are outlined.
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Affiliation(s)
- Yuri Mikhlin
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia; (M.L.); (R.B.); (D.K.); (S.V.)
- Department of Chemistry, Bar-Ilan University, Ramat Gan 52900, Israel
| | - Maxim Likhatski
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia; (M.L.); (R.B.); (D.K.); (S.V.)
| | - Roman Borisov
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia; (M.L.); (R.B.); (D.K.); (S.V.)
- Institute of Nonferrous Metals and Materials Science, Siberian Federal University, Krasnoyarsk 660041, Russia
| | - Denis Karpov
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia; (M.L.); (R.B.); (D.K.); (S.V.)
- Institute of Nonferrous Metals and Materials Science, Siberian Federal University, Krasnoyarsk 660041, Russia
| | - Sergey Vorobyev
- Institute of Chemistry and Chemical Technology, Krasnoyarsk Science Center of the Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk 660036, Russia; (M.L.); (R.B.); (D.K.); (S.V.)
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Xu D, Lu Y, Luo C. Pathway of orientational symmetry breaking in crystallization of short n-alkane droplets: A molecular dynamics study. J Chem Phys 2020; 153:084903. [PMID: 32872849 DOI: 10.1063/5.0016350] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
We carry out molecular dynamics simulations by using an all-atom model to study the nucleation and crystallization of n-alkane droplets under three-dimensional and quasi-two-dimensional conditions. We focus on the development of orientational order of chains from a random state to a neatly ordered one. Two new methods, the map of symmetry breaking and the information entropy of chain orientations, are introduced to characterize the emerge and remelting phenomena of a primary nucleus at the early stage of crystallization. Stepwise nucleation, as well as the surface induced nucleation, of large droplets is observed. We elucidate the kinetic process of the formation of a primary nucleus and the rearrangement of every single molecule involved in a primary nucleus. We found that density fluctuation and orientational preordering are coupled together and occur simultaneously in nucleation. Our results show the pathway of orientational symmetry breaking in the crystallization of n-alkane droplets that are heuristic for the deeper understanding of the crystallization in more complex molecules such as polymers.
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Affiliation(s)
- Dan Xu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Yuyuan Lu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
| | - Chuanfu Luo
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
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Wilfong B, Zhou X, Zheng H, Babra N, Brown CM, Lynn JW, Taddei KM, Paglione J, Rodriguez EE. Long-range magnetic order in hydroxide-layer-doped (Li 1-x-y Fe x Mn y OD)FeSe. PHYSICAL REVIEW MATERIALS 2020; 4:10.1103/PhysRevMaterials.4.034803. [PMID: 34142003 PMCID: PMC8207456 DOI: 10.1103/physrevmaterials.4.034803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The (Li1-x Fe x OH)FeSe superconductor has been suspected of exhibiting long-range magnetic ordering due to Fe substitution in the LiOH layer. However, no direct observation such as magnetic reflection from neutron diffraction has been reported. Here, we use a chemical design strategy to manipulate the doping level of transition metals in the LiOH layer to tune the magnetic properties of the (Li1-x-y Fe x Mn y OD)FeSe system. We find Mn doping exclusively replaces Li in the hydroxide layer resulting in enhanced magnetization in the (Li0.876Fe0.062Mn0.062OD)FeSe superconductor without significantly altering the superconducting behavior as resolved by magnetic susceptibility and electrical/thermal transport measurements. As a result, long-range magnetic ordering was observed below 12 K with neutron diffraction measurements. This work has implications for the design of magnetic superconductors for the fundamental understanding of superconductivity and magnetism in the iron chalcogenide system as well as exploitation as functional materials for next-generation devices.
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Affiliation(s)
- Brandon Wilfong
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
- Maryland Quantum Materials Center, University of Maryland, College Park, Maryland 20742, USA
| | - Xiuquan Zhou
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
- Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, USA
| | - Huafei Zheng
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
| | - Navneeth Babra
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
| | - Craig M. Brown
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Jeffrey W. Lynn
- NIST Center for Neutron Research, National Institute of Standards and Technology, Gaithersburg, Maryland 20899, USA
| | - Keith M. Taddei
- Diffraction Group, Neutron Sciences Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831, USA
| | - Johnpierre Paglione
- Maryland Quantum Materials Center, University of Maryland, College Park, Maryland 20742, USA
- Department of Physics, University of Maryland, College Park, Maryland 20742, USA
| | - Efrain E. Rodriguez
- Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA
- Maryland Quantum Materials Center, University of Maryland, College Park, Maryland 20742, USA
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