Zigzag spin structure in layered honeycomb Li3 Ni2 SbO6: a combined diffraction and antiferromagnetic resonance study
The magnetic structure of Li3Ni2SbO6 has been determined by low-temperature neutron diffraction, and the crystal structure has been refined by a combination of synchrotron and neutron powder diffraction. The monoclinic (C2/m) symmetry, assigned previously to this pseudohexagonal layered structure, h...
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| Main Authors: | , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
12 July 2017
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| In: |
Physical review
Year: 2017, Volume: 96, Issue: 2 |
| ISSN: | 2469-9969 |
| DOI: | 10.1103/PhysRevB.96.024417 |
| Online Access: | Verlag, Volltext: http://dx.doi.org/10.1103/PhysRevB.96.024417 Verlag, Volltext: https://link.aps.org/doi/10.1103/PhysRevB.96.024417 
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| Author Notes: | A.I. Kurbakov, A.N. Korshunov, S.Yu. Podchezertsev, A.L. Malyshev, M.A. Evstigneeva, F. Damay, J. Park, C. Koo, R. Klingeler, E.A. Zvereva, and V.B. Nalbandyan |
| Summary: | The magnetic structure of Li3Ni2SbO6 has been determined by low-temperature neutron diffraction, and the crystal structure has been refined by a combination of synchrotron and neutron powder diffraction. The monoclinic (C2/m) symmetry, assigned previously to this pseudohexagonal layered structure, has been unambiguously proven by peak splitting in the synchrotron diffraction pattern. The structure is based on essentially hexagonal honeycomb-ordered Ni2SbO6 layers alternating with Li3 layers, all cations and anions being in an octahedral environment. The compound orders antiferromagnetically below TN=15K, with the magnetic supercell being a 2a×2b multiple of the crystal cell. The magnetic structure within the honeycomb layer consists of zigzag ferromagnetic spin chains coupled antiferromagnetically. The ordered magnetic moment amounts to 1.62(2)μB/Ni, which is slightly lower than the full theoretical value. Upon cooling below TN, the spins tilt from the c axis, with a maximum tilting angle of 15.6∘ at T=1.5K. Our data imply non-negligible ferromagnetic interactions between the honeycomb layers. The observed antiferromagnetic resonance modes are in agreement with the two-sublattice model derived from the neutron data. Orthorhombic anisotropy shows up in zero-field splitting of Δ=198±4 and 218±4GHz. Above TN, the electron spin resonance data imply short-range antiferromagnetic order up to about 80 K. |
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| Item Description: | Die Zahlen 3, 2, 6 sind im Titel tiefgestellt Gesehen am 28.03.2018 |
| Physical Description: | Online Resource |
| ISSN: | 2469-9969 |
| DOI: | 10.1103/PhysRevB.96.024417 |