New Layered Compounds with Honeycomb Ordering: Li₃Ni₂BiO₆, Li₃NiM′BiO₆(M′ = Mg, Cu, Zn), and the Delafossite Ag₃Ni₂BiO₆

Abstract

The new layered compound Li(3)Ni(2)BiO(6) has been prepared by a solid-state reaction. It crystallizes in the monoclinic C2/m space group; its lamellar structure is characterized by a honeycomb ordering between Ni(2+) and Bi(5+) within the slabs, while Li(+) ions occupy octahedral sites in the interslab space. Stacking defects weakly alter the XRD pattern. By substitution of half of the nickel ions, the new phases Li(3)NiM'BiO(6) (M' = Mg, Cu, Zn) isostructural with Li(3)Ni(2)BiO(6) have been synthesized under similar conditions. All these compounds demonstrate paramagnetic behavior at high temperature, and Li(3)Ni(2)BiO(6) exhibits an antiferromagnetic ordering at 5.5 K. By topotactic molten salt ionic exchange, the new delafossite compound Ag(3)Ni(2)BiO(6) has been also obtained and characterized.

Zigzag antiferromagnetic ground state with anisotropic correlation lengths in the quasi-two-dimensional honeycomb lattice compoundNa2Co2TeO6Bera1, Yusuf2, Kumar3 et al. 2017Phys. Rev. B10214873View full textAdd to dashboardCite

“…Recently, density functional theory (DFT) calculations proposed a long-range zigzag AFM ordering for the compounds Li 3 Ni 2 SbO 6 and Na 3 Ni 2 SbO. An AFM ordering at low temperatures was also reported for the O3 type honeycomb compounds Na 3 M 2 SbO 6 (M = Cu, Ni, and Co) [16,31,32], A 3 Ni 2 BiO 6 with A = Na and Li [25,33] and Li 3 Ni 2 SbO 6 [24], as well as for the P2 type compounds Na 2 M 2 TeO 6 (M = Co and Ni) [31,32,34], however, their real quantum ground states remain unknown and await for an experimental investigation. The influence of the intermediate soft Na/Li layers on the magnetic correlations remains as well unexplored in these systems.…”

Orbitally induced hierarchy of exchange interactions in the zigzag antiferromagnetic state of honeycomb silver delafossite Ag3Co2SbO6

“…In the family of silver delafossites, 19 superstructures are known now [31,[42][43][44][45][46][47][48][49][50][51][52][53], although structural characterization for 18 of them is incomplete or doubtful due to stacking faults (for details, see [53]. The delafossite Ag 3 LiRu 2 O 6 was declared as a promising candidate for thermoelectric applications due to the combination of two-dimensionality, good conductivity and stacking disorder that is likely to correlate with low thermal conductivity [47].…”

Zigzag antiferromagnetic quantum ground state in monoclinic honeycomb lattice antimonatesA3Ni2SbO6(A=<

“…No long-range magnetic order was found for honeycomb Na 3 LiFeSbO 6 and Na 4 FeSbO 6 and Li 4 MnSbO 6 probably due to disorder and frustration effects [34,36]. At the same time, honeycomb-ordered O3-derived phases Na 3 M 2 SbO 6 (M=Cu, Ni, Co) [17,19,31], Li 3 Ni 2 SbO 6 [20], Li 3 Ni 2 BiO 6 [21], Na 3 Ni 2 BiO 6 [33], as well as P2-derived Na 2 M 2 TeO 6 (M=Co, Ni) [18,19], were found to order antiferromagnetically at low temperatures but their real quantum ground state remains unknown and requires joint experimental and theoretical efforts to be determined. The influence of the interlayer coupling and of the anisotropy on the ground state in such systems is largely unexplored at present.…”