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Title: Spin-reorientation transitions in the Cairo pentagonal magnet Bi4 Fe5 O13 F
Authors: Tsirlin, Alexander A.
Rousochatzakis, Ioannis
Filimonov, Dmitry
Batuk, Dmitry
Frontzek, Matthias
Abakumov, Artem M.
Issue Date: 2017
Publisher: © American Physical Society
Citation: TSIRLIN, A.A. ...et al., 2017. Spin-reorientation transitions in the Cairo pentagonal magnet Bi4 Fe5 O13 F. Physical Review B, 96: 094420.
Abstract: © 2017 American Physical Society. We show that interlayer spins play a dual role in the Cairo pentagonal magnet Bi4Fe5O13F, on one hand mediating the three-dimensional magnetic order, and on the other driving spin-reorientation transitions both within and between the planes. The corresponding sequence of magnetic orders unraveled by neutron diffraction and Mössbauer spectroscopy features two orthogonal magnetic structures described by opposite local vector chiralities, and an intermediate, partly disordered phase with nearly collinear spins. A similar collinear phase has been predicted theoretically to be stabilized by quantum fluctuations, but Bi4Fe5O13F is very far from the relevant parameter regime. While the observed in-plane reorientation cannot be explained by any standard frustration mechanism, our ab initio band-structure calculations reveal strong single-ion anisotropy of the interlayer Fe3+ spins that turns out to be instrumental in controlling the local vector chirality and the associated interlayer order.
Description: This paper was accepted for publication in the journal Physical Review B and the definitive published version is available at https://doi.org/10.1103/PhysRevB.96.094420
Sponsor: DF and AA was supported by the Russian Science Foundation (grant 14-13-00680) for support. AT was supported by the Federal Ministry for Education and Research through the Sofja Kovalevskaya Award of Alexander von Humboldt Foundation.
Version: Accepted for publication
DOI: 10.1103/PhysRevB.96.094420
URI: https://dspace.lboro.ac.uk/2134/33695
Publisher Link: https://doi.org/10.1103/PhysRevB.96.094420
ISSN: 2469-9950
Appears in Collections:Published Articles (Physics)

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