NaV3(OH)6(SO4)2: A Kagomé-Type Vanadium(III) Compound with Strong Intralayer Ferromagnetic Interactions

Grohol, Daniel; Papoutsakis, Dimitris; Nocera, Daniel G.

doi:10.1002/1521-3773(20010417)40:8<1519::aid-anie1519>3.0.co;2-d

Cited by 49 publications

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“…610 A polymeric material with repeating [V III (OH)(SO 4 ) 2 ] 2-units has also been recently obtained (123). 607 Other inorganic V(III) sulfate complexes have been structurally and spectroscopically characterized, [611][612][613][614][615] including the anhydrous V 2 (SO 4 ) 3 salt. 616 While V(II)-compounds are not likely to exist in biology, they are discussed briefly for completeness and for comparison with V(III)-compounds.…”

Section: Vanadium Sulfate Complexesmentioning

confidence: 99%

The Chemistry and Biochemistry of Vanadium and the Biological Activities Exerted by Vanadium Compounds

et al. 2004

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Section: Vanadium Sulfate Complexesmentioning

confidence: 99%

The Chemistry and Biochemistry of Vanadium and the Biological Activities Exerted by Vanadium Compounds

et al. 2004

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“…Experimentally studied examples of the frustrated 2D cases are scarce with prominent, intriguing compounds such as NiGa 2 S 4 , 11 RbFe[MoO 4 ] 2 , [12][13][14] CuFeO 2 , 15 or AM 3 (OH) 6 (SO 4 ) 2 -the jarosite type of compounds. [16][17][18] Here, we present a class of materials where a reduction of the dimensionality of a system can be achieved by using "chemical scissors," such as nonmagnetic large counter ions (e.g., A 2+ = Sr or Ba), see Fig. 1.…”

Section: Introductionmentioning

confidence: 99%

AAg2M[VO4]2
Möller
¹
,
Amuneke
²
,
Daniel
³

et al. 2012
Phys. Rev. B
38
1
48
0
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AAg 2 M[VO 4 ] 2 with A = Sr 2+ or Ba 2+ present a series of layered compounds featuring a triangular lattice of transition metal cations, M = Co 2+ or Ni 2+ , connected via nonmagnetic ortho-vanadates, which provide the magnetic superexchange within the layers. For this series of insulating compounds, ferromagnetic long-range order below 10 K is suggested by magnetization and specific heat measurements and confirmed by neutron diffraction experiments. We have investigated the impact of the spacer size of A 2+ separating the layers leading to a tilting of the vanadates and consequently inducing a change in the effective magnetic correlations. Magnetization and specific heat measurements corroborate the important dependence of the magnetic superexchange on the orientation of the vanadates and the respective spin system. Furthermore, the ground state properties of the spin systems, S = 1 (Ni 2+ ) and S = 3/2 (Co 2+ ) in their respective octahedral coordination of oxygen, are evaluated. Calculated magnetic moments of the single ion complexes agree well with the magnetic structure. We, furthermore, report the dependence of T c on applied isotropic pressure suggestive of a pressure effect on the effective ferromagnetic exchange coupling constants. In addition spectroscopic investigations probing the electronic structure of the [MO 6 ] complexes and the vibrational structure of the [VO 4 ] units are given.

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“…This may be rationalised by comparing the local geometries of the V 3+ octahedra. In the jarosites, the 'capping' of the kagome layer by the sulphate group necessitates longer apical bonds within the VO 6 octahedra 10,11 ; ie. a tetragonal elongation.…”

mentioning

confidence: 99%

A hybrid vanadium fluoride with structurally isolated S = 1 kagome layers

et al. 2014

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A new organically-templated vanadium (III) fluoride, (NH 4 ) 2 (C 2 H 8 N)[V 3 F 12 ], has been prepared using an ionothermal approach. This compound has a unique layered structure featuring distorted S = 1 kagome planes separated by the cationic species. The compound exhibits magnetic frustration, with a canted antiferromagnetic ground state. On further cooling within the ground state a pronounced change in magnetisation kinetics is observed.The kagome lattice antiferromagnet is perhaps the most famous example of a geometrically-frustrated magnetic system 1,2 . The ideal kagome antiferromagnet consists of layers of corner-sharing equilateral triangles, with antiferromagnetically-coupled magnetic cations at each node. The inherent magnetic frustration in this system can be seen when one attempts to place 'spins' on each node of the triangles such that all near-neighbour interactions satisfy antiparallel (ie. antiferromagnetic, AFM) alignment. Not all preferred interactions can be satisfied simultaneously, leading to a vastly-increased number of compromise spin configurations of equally low energy. This frustration can result in various states that lie beyond the standard notions of long-range magnetic ordering (LRO) and spontaneous symmetry breaking, leading to either spin glass, spin ice and spin liquid states 3,4 . The inhibition of LRO is particularly acute in systems with 'quantum spins' (ie. J = S = ½ for the magnetic cations) for which quantum fluctuations combine with frustration to suppress LRO down to the lowest-accessible temperatures, in favour of quantum spin liquid ground states (QSLs).There is now growing evidence that these long-sought QSL states exist in recently studied S = ½ kagome antiferromagnets including herbertsmithite 5,6 and kapellasite 7 (both polymorphs of the composition ZnCu 3 (OH) 6 Cl 2 ) and the vanadium oxyfluoride [NH 4 8,9 . Analogous systems with S = 1 spins usually freeze into LRO states [10][11][12][13][14][15][16] (full details are given in ESI, Table S1) because here quantum fluctuations play a diminished role and probably more importantly, due to single ion anisotropy effects, which start to play a role for S > ½. Nevertheless, the diverse range of behaviour exhibited by the few examples so far, and the various theoretically proposed states for the related S = 1 triangular lattices 17,18 , demonstrates that further, chemically different, examples of S = 1 kagome magnets are of significant interest.In this paper we report a novel example of this family, in the compound (NH 4 ) 2 (C 2 H 8 N)[V 3 F 12 ] 1. This study forms part of our ongoing efforts to explore and understand the complex solvothermal/ionothermal chemistry of vanadium fluoride-based systems 8,[19][20][21] . Specifically, compound 1 was isolated by using identical chemistry ¶ to that in the preparation of the QSL compound DQ-VOF, except that the temperature of the reaction was increased from 170 to 210 C and the time was increased from 1 day to 5 days. Remarkably, this adjustment in reaction conditions pro...

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NaV3(OH)6(SO4)2: A Kagomé-Type Vanadium(III) Compound with Strong Intralayer Ferromagnetic Interactions

Cited by 49 publications

References 23 publications

The Chemistry and Biochemistry of Vanadium and the Biological Activities Exerted by Vanadium Compounds

The Chemistry and Biochemistry of Vanadium and the Biological Activities Exerted by Vanadium Compounds

AAg2M[VO4]2
Möller
¹
,
Amuneke
²
,
Daniel
³

et al. 2012
Phys. Rev. B
38
1
48
0
View full text Add to dashboard Cite

A hybrid vanadium fluoride with structurally isolated S = 1 kagome layers

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NaV3(OH)6(SO4)2: A Kagomé-Type Vanadium(III) Compound with Strong Intralayer Ferromagnetic Interactions

Cited by 49 publications

References 23 publications

The Chemistry and Biochemistry of Vanadium and the Biological Activities Exerted by Vanadium Compounds

The Chemistry and Biochemistry of Vanadium and the Biological Activities Exerted by Vanadium Compounds

AAg2M[VO4]2Möller1, Amuneke2, Daniel3 et al. 2012Phys. Rev. B381480View full textAdd to dashboardCite

A hybrid vanadium fluoride with structurally isolated S = 1 kagome layers

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About

AAg2M[VO4]2
Möller
¹
,
Amuneke
²
,
Daniel
³

et al. 2012
Phys. Rev. B
38
1
48
0
View full text Add to dashboard Cite