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arXiv · 1412.3029

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
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Abstract

SmFeO3 has attracted considerable attention very recently due to the 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 reveals a clear sign for magneto-elastic coupling at the N\'eel-temperature of ~675 K, the dielectric measurements remain silent as far as ferroelectricity is concerned.

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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. 2014-12-09. k=0 magnetic structure and absence of ferroelectricity in SmFeO3. https://doi.org/10.1103/physrevlett.113.217203

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