Commensurate and incommensurate magnetic order in spin-1 chains stacked on the triangular lattice in Li${}_2$NiW${}_2$O${}_8$

Abstract

We report thermodynamic properties, magnetic ground state, and microscopic magnetic model of the spin-1 frustrated antiferromaget Li${}_2$NiW${}_2$O${}_8$ showing successive transitions at $T_{N1}\simeq 18$ K and $T_{N2}\simeq 12.5$ K in zero field. Nuclear magnetic resonance and neutron diffraction reveal collinear and commensurate magnetic order with the propagation vector $\mathbf{k}=(\frac{1}{2},0,\frac{1}{2})$ below $T_{N2}$. The ordered moment of 1.8 ${\mu }_B$ at 1.5 K is directed along $[0.89(9),-0.10(5),-0.49(6)]$ and matches the magnetic easy axis of spin-1 Ni${}^{2+}$ ions, which is determined by the scissor-like distortion of the NiO${}_6$ octahedra. Incommensurate magnetic order, presumably of spin-density-wave type, is observed in the region between $T_{N2}$ and $T_{N1}$. Density-functional band-structure calculations put forward a three-dimensional spin lattice with spin-1 chains running along the $[01\bar{1}]$ direction and stacked on a spatially anisotropic triangular lattice in the $ab$ plane. We show that the collinear magnetic order in Li${}_2$NiW${}_2$O${}_8$ is incompatible with the triangular lattice geometry and thus driven by a pronounced easy-axis single-ion anisotropy of Ni${}^{2+}$.

Published version: 12+ pages, 11 figures, 3 tables

References in corpus (23)

• The ALPS project release 1.3: open source software for strongly correlated systems
• Long range Neel order in the triangular Heisenberg model
• Neel order in square and triangular lattice Heisenberg models
• Cluster algorithms for general-S quantum spin systems
• Unusual ordered phases of highly frustrated magnets: a review
• Magnetic properties of BaCdVO(PO_4)_2: a strongly frustrated spin-1/2 square lattice close to the quantum critical regime
• The nature of the magnetic order in Ca3Co2O6
• Triangular Antiferromagnets
• Successive magnetic phase transitions and multiferroicity in Spin-1 triangular lattice antiferromagnet Ba${}_3$NiNb${}_2$O${}_9$
• Slow Magnetic Order-Order Transition in the Spin Chain Antiferromagnet Ca3Co2O6
• Exploring the spin-1/2 frustrated square lattice model with high-field magnetization measurements
• Incommensurate magnetic ground state revealed by RXS in the frustrated spin system Ca3Co2O6
• Eighth-order high-temperature expansion for general Heisenberg Hamiltonians
• Origin of the long-wavelength magnetic modulation in Ca3Co2O6
• Magnetic transitions in the spin S=5/2 frustrated magnet BiMn2PO6 and strong lattice softening in BiMn2PO6 and BiZn2PO6 below 200 K
• Antiferromagnetism of Zn${}_2$VO(PO${}_4{)}_2$ and the dilution with Ti${}^{4+}$
• Spin correlations in Ca3Co2O6: A polarised-neutron diffraction and Monte Carlo study
• Interplay of anisotropy and frustration: triple transitions in a triangular-lattice antiferromagnet
• NMR and Neutron Scattering Studies of Quasi One-Dimensional Magnet CuV_2O_6
• One-Dimensional Dispersive Magnon Excitation in the Frustrated Spin-2 Chain System Ca3Co2O6
• Collinear order in a frustrated three-dimensional spin-$\frac{1}{2}$ antiferromagnet Li${}_2$CuW${}_2$O${}_8$
• Two-step antiferromagnetic transition and moderate triangular frustration in Li2Co(WO4)2
• Frustrated three-dimensional antiferromagnet Li${}_2$CuW${}_2$O${}_8$: ${}^7$Li NMR and the effect of non-magnetic dilution

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