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arXiv · 1406.7793

Magnetic Structure of Hexagonal Mn-doped LuFeO$_{3}$

Steven M. Disseler·Xuan Luo·Yoon Seok Oh·Rongwei Hu·Dylan Quintana·Alexander Zhang·Jeffrey W. Lynn·Sang-Wook Cheong·William Ratcliff II
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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.

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Steven M. Disseler, Xuan Luo, Yoon Seok Oh, Rongwei Hu, Dylan Quintana, Alexander Zhang, Jeffrey W. Lynn, Sang-Wook Cheong, William Ratcliff II. 2014-06-30. Magnetic Structure of Hexagonal Mn-doped LuFeO$_{3}$. https://doi.org/10.1103/physrevb.92.054435

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