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arXiv · 1809.01977

The magnetic order of a manganese vanadate system with two-dimensional striped triangular lattice

V. O. Garlea·M. A. McGuire·L. D. Sanjeewa·D. M. Pajerowski·F. Ye·J. W. Kolis
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Abstract

Results of magnetization and neutron diffraction measurements of the manganese vanadate system Mn$_5$(VO$_4$)$_2$(OH)$_4$ are reported. The crystal structure of this compound contains triangular [Mn$_3$O$_{13}$] building blocks that produce two-dimensional Mn$^{2+}$ magnetic networks with striped triangular topologies. The Mn sheets are connected through the nonmagnetic vanadate tetrahedra extending along the $a$-axis. Magnetization measurements performed on single crystals reveal the onset of a long-range antiferromagnetic order below approximately 45 K. The magnetic structure is Néel-type with nearest-neighbor Mn atoms coupled via three or four antiferromagnetic bonds. The magnetic moments are confined within the layers and are oriented parallel to the $b$ direction. The magnitudes of ordered moments are reduced, presumably by geometrical frustration and the low-dimensionality of the lattice structure.

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V. O. Garlea, M. A. McGuire, L. D. Sanjeewa, D. M. Pajerowski, F. Ye, J. W. Kolis. 2018-09-06. The magnetic order of a manganese vanadate system with two-dimensional striped triangular lattice. https://doi.org/10.1063/1.5043124

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