Magnetic Structure of Hexagonal Mn-doped LuFeO${}_3$

Abstract

Neutron scattering techniques are used to investigate the crystalline and magnetic structure of LuFe${}_{0.75}$Mn${}_{0.25}$O${}_3$ in bulk polycrystalline form. We find that the crystalline structure is described by the hexagonal P6${}_3$cm space group similar to that of thin-film LuFeO${}_3$, and that the system orders antiferromagnetically below T${}_N$ = 134 K. Inelastic neutron scattering reveals nearest-neighbor superexchange parameters that are enhanced relative to LuMnO${}_3$. The observation of significant diffuse scattering above T${}_N$ demonstrates the frustrated nature of the system; comparisons with similar materials suggest the ground state magnetic configuration is sensitive to local crystallographic distortions.

15 pages, 5 figures

References in corpus (5)

• Linear spin wave theory for single-Q incommensurate magnetic structures
• Magnetic Structure and Ordering of Multiferroic Hexagonal LuFeO3
• Magnon breakdown in a two dimensional triangular lattice Heisenberg antiferromagnet of multiferroic LuMnO${}_3$
• Magnetic excitations in multiferroic LuMnO3 studied by inelastic neutron scattering
• Structural and electronic origin of the magnetic structures in hexagonal LuFeO${}_3$

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• Magnetic excitations in bulk multiferroic two-dimensional triangular lattice antiferromagnet (Lu,Sc)FeO${}_3$
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• Structural phase diagram and magnetic properties of Sc-substituted rare earth ferrites R1-xScxFeO3 (R=Lu, Yb, Er, and Ho)
• New iron-based multiferroics with improper ferroelectricity
• Magnetic monopoles and toroidal moments in LuFeO${}_3$ and related compounds