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Bulled J, Willis A, Faure Beaulieu Z, Cassidy SJ, Bruckmoser J, Boström HLB, Goodwin AL. Percolation-Induced Ferrimagnetism from Vacancy Order in [Gua]Mn 1-xFe 2x/3(HCOO) 3 Hybrid Perovskites. J Am Chem Soc 2024; 146:13714-13718. [PMID: 38723156 PMCID: PMC11117395 DOI: 10.1021/jacs.4c03407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 04/26/2024] [Accepted: 04/30/2024] [Indexed: 05/23/2024]
Abstract
We report the magnetic behavior of the hybrid perovskites [Gua]Mn1-xFe2x/3□x/3(HCOO)3 (0 ≤ x ≤ 0.88), showing that vacancy ordering drives bulk ferrimagnetism for x > 0.6. The behavior is rationalized in terms of a simple microscopic model of percolation-induced ferrimagnetism. Monte Carlo simulations driven by this model reproduce the experimental dependence of magnetic susceptibility on x and show that, at intermediate compositions, domains of short-range vacancy order lead to the emergence of local magnetization. Our results open up a new avenue for the design of multiferroic hybrid perovskites.
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Affiliation(s)
- Johnathan
M. Bulled
- Department
of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford OX1 3QR, United Kingdom
| | - Alexandra Willis
- Department
of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford OX1 3QR, United Kingdom
| | - Zoé Faure Beaulieu
- Department
of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford OX1 3QR, United Kingdom
| | - Simon J. Cassidy
- Department
of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford OX1 3QR, United Kingdom
| | - Jonas Bruckmoser
- Department
of Chemistry, Technical University of Munich, Lichtenbergstraße 4, 85748 Garching, Germany
| | - Hanna L. B. Boström
- Department
of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford OX1 3QR, United Kingdom
- Wallenberg
Initiative Materials Science for Sustainability, Department of Materials
and Environmental Chemistry, Stockholm University, SE-114 18 Stockholm, Sweden
- Department
of Materials and Environmental Chemistry, Stockholm University, SE-114
18 Stockholm, Sweden
| | - Andrew L. Goodwin
- Department
of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, Oxford OX1 3QR, United Kingdom
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2
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Structural, Thermal and Functional Properties of a Hybrid Dicyanamide-Perovskite Solid Solution. CRYSTALS 2022. [DOI: 10.3390/cryst12060860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In Solid-State Chemistry, a well-known route to obtain new compounds and modulate their properties is the formation of solid solutions, a strategy widely exploited in the case of classical inorganic perovskites but relatively unexplored among emergent hybrid organic–inorganic perovskites (HOIPs). In this work, to the best of our knowledge, we present the first dicyanamide-perovskite solid solution of [TPrA][Co0.5Ni0.5(dca)3] and study its thermal, dielectric and optical properties, comparing them with those of the parent undoped compounds [TPrA][Co(dca)3] and [TPrA][Ni(dca)3]. In addition, we show that the prepared doped compound can be used as a precursor that, by calcination, allows CNTs with embedded magnetic Ni:Co alloy nanoparticles to be obtained through a fast and much simpler synthetic route than other complex CVD or arc-discharge methods used to obtain this type of material.
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3
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Deakin J, Slater P. Synthesis and structure of the perovskite related Sr4-xBaxNa1-yLiy(BO3)3 solid solution series and the related a site cation ordered (Sr/Ca)4Li(BO3)3 system. J SOLID STATE CHEM 2021. [DOI: 10.1016/j.jssc.2020.121870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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4
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Johnstone DN, Firth FCN, Grey CP, Midgley PA, Cliffe MJ, Collins SM. Direct Imaging of Correlated Defect Nanodomains in a Metal-Organic Framework. J Am Chem Soc 2020. [PMID: 32627544 DOI: 10.26434/chemrxiv.12024402.v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
Defect engineering can enhance key properties of metal-organic frameworks (MOFs). Tailoring the distribution of defects, for example in correlated nanodomains, requires characterization across length scales. However, a critical nanoscale characterization gap has emerged between the bulk diffraction techniques used to detect defect nanodomains and the subnanometer imaging used to observe individual defects. Here, we demonstrate that the emerging technique of scanning electron diffraction (SED) can bridge this gap uniquely enabling both nanoscale crystallographic analysis and the low-dose formation of multiple diffraction contrast images for defect analysis in MOFs. We directly image defect nanodomains in the MOF UiO-66(Hf) over an area of ca. 1000 nm and with a spatial resolution ca. 5 nm to reveal domain morphology and distribution. Based on these observations, we suggest possible crystal growth processes underpinning synthetic control of defect nanodomains. We also identify likely dislocations and small angle grain boundaries, illustrating that SED could be a key technique in developing the potential for engineering the distribution of defects, or "microstructure", in functional MOF design.
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Affiliation(s)
- Duncan N Johnstone
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, U.K
| | - Francesca C N Firth
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Clare P Grey
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K
| | - Paul A Midgley
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, U.K
| | - Matthew J Cliffe
- School of Chemistry, University of Nottingham, Nottingham NG7 2RD, U.K
| | - Sean M Collins
- Department of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, U.K
- School of Chemical and Process Engineering and School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K
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5
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Johnstone DN, Firth FCN, Grey CP, Midgley PA, Cliffe MJ, Collins SM. Direct Imaging of Correlated Defect Nanodomains in a Metal-Organic Framework. J Am Chem Soc 2020; 142:13081-13089. [PMID: 32627544 PMCID: PMC7467717 DOI: 10.1021/jacs.0c04468] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 11/30/2022]
Abstract
Defect engineering can enhance key properties of metal-organic frameworks (MOFs). Tailoring the distribution of defects, for example in correlated nanodomains, requires characterization across length scales. However, a critical nanoscale characterization gap has emerged between the bulk diffraction techniques used to detect defect nanodomains and the subnanometer imaging used to observe individual defects. Here, we demonstrate that the emerging technique of scanning electron diffraction (SED) can bridge this gap uniquely enabling both nanoscale crystallographic analysis and the low-dose formation of multiple diffraction contrast images for defect analysis in MOFs. We directly image defect nanodomains in the MOF UiO-66(Hf) over an area of ca. 1000 nm and with a spatial resolution ca. 5 nm to reveal domain morphology and distribution. Based on these observations, we suggest possible crystal growth processes underpinning synthetic control of defect nanodomains. We also identify likely dislocations and small angle grain boundaries, illustrating that SED could be a key technique in developing the potential for engineering the distribution of defects, or "microstructure", in functional MOF design.
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Affiliation(s)
- Duncan N. Johnstone
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, U.K.
| | - Francesca C. N. Firth
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Clare P. Grey
- Department
of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, U.K.
| | - Paul A. Midgley
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, U.K.
| | - Matthew J. Cliffe
- School
of Chemistry, University of Nottingham, Nottingham NG7 2RD, U.K.
| | - Sean M. Collins
- Department
of Materials Science and Metallurgy, University
of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, U.K.
- School
of Chemical and Process Engineering and School of Chemistry, University of Leeds, Leeds LS2 9JT, U.K.
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6
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Abstract
A survey of the rigid unit modes in molecular perovskites is presented, showing how the prevalence of conventional tilts, unconventional tilts and columnar shifts vary across the different classes of molecular perovskites.
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Affiliation(s)
- Hanna L. B. Boström
- Department of Inorganic Chemistry
- Ångström Laboratory
- Uppsala Universitet
- 751 21 Uppsala
- Sweden
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7
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Boström HLB, Bruckmoser J, Goodwin AL. Ordered B-Site Vacancies in an ABX3 Formate Perovskite. J Am Chem Soc 2019; 141:17978-17982. [DOI: 10.1021/jacs.9b09358] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hanna L. B. Boström
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, U.K
- Department of Chemistry, Ångström Laboratory, Uppsala University, Box 538, 751 21 Uppsala, Sweden
| | - Jonas Bruckmoser
- Department of Chemistry, Technical University of Munich, Lichtenbergstraße 4, Garching, Germany
| | - Andrew L. Goodwin
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, U.K
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8
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Coates CS, Gray HJ, Bulled J, Boström HLB, Simonov A, Goodwin AL. Ferroic multipolar order and disorder in cyanoelpasolite molecular perovskites. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2019; 377:20180219. [PMID: 31130093 PMCID: PMC6562344 DOI: 10.1098/rsta.2018.0219] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/22/2019] [Indexed: 05/31/2023]
Abstract
We use a combination of variable-temperature high-resolution synchrotron X-ray powder diffraction measurements and Monte Carlo simulations to characterize the evolution of two different types of ferroic multipolar order in a series of cyanoelpasolite molecular perovskites. We show that ferroquadrupolar order in [C3N2H5]2Rb[Co(CN)6] is a first-order process that is well described by a four-state Potts model on the simple cubic lattice. Likewise, ferrooctupolar order in [NMe4]2B[Co(CN)6] (B = K, Rb, Cs) also emerges via a first-order transition that now corresponds to a six-state Potts model. Hence, for these particular cases, the dominant symmetry breaking mechanisms are well understood in terms of simple statistical mechanical models. By varying composition, we find that the effective coupling between multipolar degrees of freedom-and hence the temperature at which ferromultipolar order emerges-can be tuned in a chemically sensible manner. This article is part of the theme issue 'Mineralomimesis: natural and synthetic frameworks in science and technology'.
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Affiliation(s)
- C. S. Coates
- Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, UK
| | - H. J. Gray
- Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, UK
| | - J. M. Bulled
- Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, UK
| | - H. L. B. Boström
- Department of Chemistry, Uppsala University, PO Box 256, SE-751 05, Uppsala, Sweden
| | - A. Simonov
- Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, UK
| | - A. L. Goodwin
- Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, UK
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9
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Sapnik AF, Geddes HS, Reynolds EM, Yeung HHM, Goodwin AL. Compositional inhomogeneity and tuneable thermal expansion in mixed-metal ZIF-8 analogues. Chem Commun (Camb) 2018; 54:9651-9654. [PMID: 30101236 DOI: 10.1039/c8cc04172e] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We study the structural and thermomechanical effects of cation substitution in the compositional family of metal-organic frameworks Zn1-xCdx(mIm)2 (HmIm = 2-methylimidazole). We find complete miscibility for all compositions x, with evidence of inhomogeneous distributions of Cd and Zn that in turn affect framework aperture characteristics. Using variable-temperature X-ray powder diffraction measurements, we show that Cd substitution drives a threefold reduction in the magnitude of thermal expansion behaviour. We interpret this effect in terms of an increased density of negative thermal expansion modes in the more flexible Cd-rich frameworks.
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Affiliation(s)
- Adam F Sapnik
- Department of Chemistry, University of Oxford, Inorganic Chemistry Laboratory, South Parks Road, Oxford OX1 3QR, UK.
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