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Title: Implications of bond disorder in a S=1 kagome lattice

Journal Article · · Scientific Reports
 [1];  [2];  [3];  [4];  [4];  [5];  [6];  [6];  [7]; ORCiD logo [8]; ORCiD logo [9];  [9];  [9];  [9]; ORCiD logo [10];  [6];  [6];  [11]; ORCiD logo [12];  [12]
  1. Eastern Washington Univ., Cheney, WA (United States). Dept. of Chemistry and Biochemistry
  2. Univ. of Warwick, Coventry (United Kingdom). Dept. of Physics
  3. Univ. of Warwick, Coventry (United Kingdom). Dept. of Physics
  4. Eastern Washington Univ., Cheney, WA (United States). Dept. of Chemistry and Biochemistry
  5. Univ. of Oxford (United Kingdom). Clarendon Laboratory, Department of Physics
  6. Univ. of Oxford (United Kingdom). Clarendon Laboratory, Department of Physics
  7. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). National High Magnetic Field Laboratory
  8. Durham Univ. (United Kingdom). Center for Materials Physics
  9. Durham Univ. (United Kingdom). Center for Materials Physics
  10. Science and Technology Facilities Council (STFC), ISIS Pulsed Muon Facility, Oxford (United Kingdom). Rutherford Appleton Lab.
  11. Laboratory for Muon-Spin Spectroscopy, Villigen PSI (Switzerland). Paul Scherrer Institut,
  12. Bruker AXS, Inc, Madison, WI (United States)
+ Show Author Affiliations

Strong hydrogen bonds such as F···H···F offer new strategies to fabricate molecular architectures exhibiting novel structures and properties. Along these lines and, to potentially realize hydrogen-bond mediated superexchange interactions in a frustrated material, we synthesized [H2F]2[Ni3F6(Fpy)12][SbF6]2 (Fpy = 3-fluoropyridine). It was found that positionally-disordered H2F+ ions link neutral NiF2(Fpy)4 moieties into a kagome lattice with perfect 3-fold rotational symmetry. Detailed magnetic investigations combined with density-functional theory (DFT) revealed weak antiferromagnetic interactions (J ~ 0.4 K) and a large positive-D of 8.3 K with ms = 0 lying below ms = ±1. The observed weak magnetic coupling is attributed to bond-disorder of the H2F+ ions which leads to disrupted Ni-F···H-F-H···F-Ni exchange pathways. Despite this result, we argue that networks such as this may be a way forward in designing tunable materials with varying degrees of frustration.

Research Organization:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1624388
Journal Information:
Scientific Reports, Vol. 8, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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Structural, Electronic, and Magnetic Properties of Quasi-1D Quantum Magnets [Ni(HF 2 )(pyz) 2 ]X (pyz = pyrazine; X = PF 6 – , SbF 6 – ) Exhibiting Ni-FHF-Ni and Ni-pyz-Ni Spin Interactions journal July 2011
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Cited By (2)

Determining the anisotropy and exchange parameters of polycrystalline spin-1 magnets journal September 2019
Continuous transformation between ferro and antiferro circular structures in $\boldsymbol {J_1-J_2-J_3}$ frustrated Heisenberg model journal August 2019

Linked Research (1)

Figures / Tables (9)

Table 1(p. 2)table Table 1
Figure 1(p. 3)figure Figure 1
Figure 2(p. 4)figure Figure 2
Figure 3(p. 4)figure Figure 3
Figure 4(p. 5)figure Figure 4
Figure 5(p. 6)figure Figure 5
Figure 6(p. 7)figure Figure 6
Figure 7(p. 8)figure Figure 7
Table 2(p. 10)table Table 2

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