$k=0$ Magnetic Structure and Absence of Ferroelectricity in ${\mathrm{SmFeO}}_{3}$

$k = 0$ Magnetic Structure and Absence of Ferroelectricity in ${SmFeO}_{3}$

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, and A. C. Komarek

Phys. Rev. Lett. 113, 217203 – Published 20 November 2014

Abstract

${SmFeO}_{3}$ 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 ${SmFeO}_{3}$ 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 $\sim 675 K$ , the dielectric measurements remain silent as far as ferroelectricity is concerned.

Received 18 June 2014

DOI:https://doi.org/10.1103/PhysRevLett.113.217203

Authors & Affiliations

C.-Y. Kuo¹, Y. Drees¹, M. T. Fernández-Díaz², L. Zhao³, L. Vasylechko^1,4, D. Sheptyakov⁵, A. M. T. Bell⁶, T. W. Pi⁷, H.-J. Lin⁷, M.-K. Wu³, E. Pellegrin⁸, S. M. Valvidares⁸, Z. W. Li¹, P. Adler¹, A. Todorova¹, R. Küchler¹, A. Steppke¹, L. H. Tjeng¹, Z. Hu¹, and A. C. Komarek^1,*

¹Max-Planck-Institute for Chemical Physics of Solids, Nöthnitzer Strasse 40, 01187 Dresden, Germany
²Institut Laue-Langevin, 38042 Grenoble, France
³Institute of Physics, Academia Sinica, Taipei 11529, Taiwan
⁴Lviv Polytechnic National University, 12 Bandera Street, 79013 Lviv, Ukraine
⁵Laboratory for Neutron Scattering and Imaging, Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland
⁶HASYLAB at DESY, Notkestrasse 85, 22607 Hamburg, Germany
⁷National Synchrotron Radiation Research Center (NSRRC), 101 Hsin-Ann Road, Hsinchu 30077, Taiwan
⁸CELLS-ALBA Synchrotron Radiation Facility, Carretera BP 1413, km 3.3, E-08290 Cerdanyola del Vallès, Barcelona, Spain

^*Alexander.Komarek@cpfs.mpg.de

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Vol. 113, Iss. 21 — 21 November 2014

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Physical Review Letters

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, and A. C. Komarek

Phys. Rev. Lett. 113, 217203 – Published 20 November 2014

Abstract

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$k = 0$ Magnetic Structure and Absence of Ferroelectricity in ${SmFeO}_{3}$