K=0 magnetic structure and absence of ferroelectricity in SmFeO3

C. Y. Kuo*, Y. Drees, M. T. Fernández-Díaz, L. Zhao, L. Vasylechko, D. Sheptyakov, A. M.T. Bell, T. W. Pi, H. J. Lin, M. K. Wu, E. Pellegrin, S. M. Valvidares, Z. W. Li, P. Adler, A. Todorova, R. Küchler, A. Steppke, L. H. Tjeng, Z. Hu, A. C. Komarek

*Corresponding author for this work

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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 Néel-temperature of ∼675K, the dielectric measurements remain silent as far as ferroelectricity is concerned.

Original languageEnglish
Article number217203
JournalPhysical Review Letters
Issue number21
StatePublished - 20 Nov 2014

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    Kuo, C. Y., Drees, Y., Fernández-Díaz, M. T., Zhao, L., Vasylechko, L., Sheptyakov, D., Bell, A. M. T., Pi, T. W., Lin, H. J., Wu, M. K., Pellegrin, E., Valvidares, S. M., Li, Z. W., Adler, P., Todorova, A., Küchler, R., Steppke, A., Tjeng, L. H., Hu, Z., & Komarek, A. C. (2014). K=0 magnetic structure and absence of ferroelectricity in SmFeO3. Physical Review Letters, 113(21), [217203]. https://doi.org/10.1103/PhysRevLett.113.217203