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k=0 Magnetic Structure and Absence of Ferroelectricity in SmFeO3

MPG-Autoren
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Kuo,  C.-Y.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Drees,  Y.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Vasylechko,  L.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Li,  Z. W.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Adler,  P.
Peter Adler, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Todorova,  Adriana
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Küchler,  R.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Steppke,  A.
Physics of Quantum Materials, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Tjeng,  L. H.
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Hu,  Z.
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Komarek,  A. C.
Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Zitation

Kuo, C.-Y., Drees, Y., Fernández-Díaz, M. T., Zhao, L., Vasylechko, L., Sheptyakov, D., et al. (2014). k=0 Magnetic Structure and Absence of Ferroelectricity in SmFeO3. Physical Review Letters, 113(21): 217203, pp. 1-5. doi:10.1103/PhysRevLett.113.217203.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0024-9C88-7
Zusammenfassung
SmFeO3 has attracted considerable attention very recently due to its reported multiferroic properties above room temperature. We have performed powder and single crystal neutron diffraction as well as complementary polarization dependent soft X-ray absorption spectroscopy measurements on floating-zone grown SmFeO3 single crystals in order to determine its magnetic structure. We found a k = 0 G-type collinear antiferromagnetic structure that is not compatible with inverse Dzyaloshinskii-Moriya interaction driven ferroelectricity. While the structural data reveal a clear sign for magneto-elastic coupling at the Neel-temperature of similar to 675 K, the dielectric measurements remain silent as far as ferroelectricity is concerned.