Journal ArticleDOI
Multiferroic Behavior Associated with an Order−Disorder Hydrogen Bonding Transition in Metal−Organic Frameworks (MOFs) with the Perovskite ABX3 Architecture
Prashant Jain,Vasanth Ramachandran,Ronald J. Clark,Haidong Zhou,Brian H. Toby,Naresh S. Dalal,Harold W. Kroto,Anthony K. Cheetham +7 more
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TLDR
This research opens up a new class of multiferroics in which the electrical ordering is achieved by means of hydrogen bonding, and the compounds become canted weak ferromagnets below 40 K.Abstract:
Multiferroic behavior in perovskite-related metal−organic frameworks of general formula [(CH3)2NH2]M(HCOO)3, where M = Mn, Fe, Co, and Ni, is reported. All four compounds exhibit paraelectric−antiferroelectric phase transition behavior in the temperature range 160−185 K (Mn: 185 K, Fe: 160 K; Co: 165 K; Ni: 180 K); this is associated with an order−disorder transition involving the hydrogen bonded dimethylammonium cations. On further cooling, the compounds become canted weak ferromagnets below 40 K. This research opens up a new class of multiferroics in which the electrical ordering is achieved by means of hydrogen bonding.read more
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Organic–Inorganic Perovskites: Structural Versatility for Functional Materials Design
TL;DR: This review will explore beyond the current focus on three-dimensional (3-D) lead(II) halide perovskites, to highlight the great chemical flexibility and outstanding potential of the broader class of 3-D and lower dimensional organic-based perovSKite family for electronic, optical, and energy-based applications as well as fundamental research.
Journal ArticleDOI
Ferroelectric Metal–Organic Frameworks
Wen Zhang,Ren-Gen Xiong +1 more
TL;DR: The ferroelectric properties of some lately reported MOFs will be presented in this talk, covering their triggering mechanism, designing strategies and potential applications as multifunctional materials.
Journal ArticleDOI
Chemically diverse and multifunctional hybrid organic–inorganic perovskites
TL;DR: Hybrid organic-inorganic perovskites (HOIPs) as mentioned in this paper can have a diverse range of compositions including halides, azides, formates, dicyanamides, cyanides, and Dicyanometallates.
Journal ArticleDOI
Metal-organic frameworks as a tunable platform for designing functional molecular materials.
Cheng Wang,Demin Liu,Wenbin Lin +2 more
TL;DR: Through the combination of molecular synthesis and crystal engineering, MOFs present an unprecedented opportunity for the rational and precise design of functional materials.
Journal ArticleDOI
Solid-state principles applied to organic–inorganic perovskites: new tricks for an old dog
TL;DR: In this paper, the authors extend the classical concept of ionic tolerance factors to hybrid organic-inorganic materials and predict the existence of several hitherto undiscovered hybrid perovskite phases.
References
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TL;DR: It is argued here that the coupling between the two orders may be stronger in the bulk than in thin films where the cycloid is absent, and that the antiferromagnetic and ferroelectric order parameters are intimately coupled.