Multiferroics by Rational Design: Implementing Ferroelectricity in Molecule‐Based Magnets

Pardo, Emilio; Train, Cyrille; Liu, Hongbo; Chamoreau, Lise‐Marie; Dkhil, Brahim; Boubekeur, Kamal; Lloret, Francesc; Nakatani, Keitaro; Tokoro, Hiroko; Ohkoshi, Shin‐ichi; Verdaguer, Michel

doi:10.1002/anie.201202848

Cited by 160 publications

(87 citation statements)

References 41 publications

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“…[1][2][3][4][5][6][7] Such materials, classified as the "middle" in Cheetham and Rao quote "There is plenty of room in the middle," 2 have showed a very wide spectra of structures, properties, functionalities, and possible applications. Despite the continued great interest in their chemical aspects, [1][2][3] MOFs have been exploited for the abundance in their physical properties and critical phenomena or phase transitions.…”

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confidence: 99%

“…6 MOFs showing synergy through the coexistence of magnetic and electric orderings have emerged as a field of MOF-multiferroics. 7 However, the examples are still few. The recent research on ammonium metal formate frameworks (AMFFs, mainly for 3d metals or Mg, TM) has revealed not only the diversity in framework structures but more importantly, promising magnetic and/or electric properties, phase transitions, and others.…”

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confidence: 99%

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Hierarchical cobalt-formate framework series with (412⋅63)(49⋅66)n (n = 1–3) topologies exhibiting slow dielectric relaxation and weak ferromagnetism

Shang

Chen

et al. 2014

APL Materials

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The employment of linear di-, tri-, and tetra-ammoniums has generated a hierarchy in the binodal (412⋅63)(49⋅66)n topologies with n = 1, 2, and 3, respectively, for the cobalt formate frameworks with increasing length of the cavities to match the ammoniums. This indicates the length-directing effect of the polyammoniums. The dynamic movements of polyammoniums between favored sites or orientations within the cavities lead to slow dielectric relaxations. All materials are spin-canted antiferromagnets in low temperatures and show reduced spontaneous magnetizations from di- and tri-, to tetra-ammoniums, because of the increased number of unique Co ions or the antiferromagnetically coupled sublattices.

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confidence: 99%

Hierarchical cobalt-formate framework series with (412⋅63)(49⋅66)n (n = 1–3) topologies exhibiting slow dielectric relaxation and weak ferromagnetism

Shang

Chen

et al. 2014

APL Materials

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“…They are indeed the first 2D compounds where dications are inserted whereas this result was discovered in the 1990's for 3D compounds [332]. In comparison with previous cases [299,300] the competition between coordination and hydrogen bonds did not hinder the formation of the 2D coordination network but, as already observed [297,302], it induced the corrugation of the layers because the manganese(II) centres are heptacoordinated, while using…”

Section: Discussionmentioning

confidence: 72%

“…Few exceptions to these architectures and stoechiometries were presented in the literature and were considered as exotic cases [293,294], that did not invalidate the general scheme of synthesis. Recently, to favour the appearance of new properties under electric field [295][296][297][298], cations with H-bonding abilities were introduced as templating agents in the oxalate-based [MnCr] bimetallic coordination networks. It then appeared a competition between the formation of hydrogen and coordination bonds.…”

Section: Introductionmentioning

confidence: 99%

“…It then appeared a competition between the formation of hydrogen and coordination bonds. The latter holding the anionic network, the insertion of such cations deeply modifies the coordination network [296][297][298] or even prevents its formation [299][300][301]. The evolutions of the coordination network are related to variations of the manganese(II) coordination environment and/or of the oxalate bridging mode.…”

Section: Introductionmentioning

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From Mononuclear to Dinuclear: Magnetic Properties of Transition Metal Complexes

Saureu¹

2016

ioChem-BD Computational Chemistry Datasets

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Metal–Organic Frameworks: Functional Magnetic Materials with Formate

Shang

Chen

Wang

et al. 2014

Encyclopedia of Inorganic and Bioinorganic Chemistry

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In this chapter, the state of art of the functional magnetic materials based on metal formate frameworks (MFFs), mainly developed in the past decade, is provided. These materials, belonging to a relatively small yet fundamentally important class of metal‐organic frameworks (MOFs), possess various structures and interesting properties. The binary or ternary dense MFFs display complicated structures and various magnetic behaviors though their constituents are simple. MFFs with ammonium components exhibited abundant and interesting magnetism, di‐/ferro‐/antiferroelectric and mechanical properties, structural phase transitions, and critical phenomena triggered by various order–disorder transitions of ammoniums, and the chirality, as well as the possible combinations such as multiferroics. These ammonium MFFs mimic the traditional inorganic materials such as perovskite, niccolite, and diamond. The porous diamondoid MFFs of [M 3 (HCOO) 6 ] possess a wide spectrum of gas and guest inclusion behaviors. They thus show guest‐modulated magnetism, guest‐induced chirality, and guest‐based electric polarization. Mixing formate with coligands has provided MFFs with not only beautiful and fantastic structures but also interesting and appealing magnetic properties and others. It has been demonstrated that the formate, being the smallest and simple carboxylate, cheap and less toxic thus more biocompatible and environment‐friendly, and having been more or less ignored before, now comes back to our sight and awareness with its important role, having been verified, in the construction of promising MOF materials, and provides new materials with interesting properties.

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Multiferroics by Rational Design: Implementing Ferroelectricity in Molecule‐Based Magnets

Cited by 160 publications

References 41 publications

Hierarchical cobalt-formate framework series with (412⋅63)(49⋅66)n (n = 1–3) topologies exhibiting slow dielectric relaxation and weak ferromagnetism

Hierarchical cobalt-formate framework series with (412⋅63)(49⋅66)n (n = 1–3) topologies exhibiting slow dielectric relaxation and weak ferromagnetism

From Mononuclear to Dinuclear: Magnetic Properties of Transition Metal Complexes

Metal–Organic Frameworks: Functional Magnetic Materials with Formate

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