k=0 magnetic structure and absence of ferroelectricity in SmFeO3

arxiv: 1412.3029 · v1 · pith:JWTBSAZInew · submitted 2014-12-09 · ❄️ cond-mat.str-el · cond-mat.mtrl-sci

k=0 magnetic structure and absence of ferroelectricity in SmFeO3

C.-Y. Kuo , Y. Drees , M. T. Fern\'andez-D\'iaz , L. Zhao , L. Vasylechko , D. Sheptyakov , A. M. T. Bell , T. W. Pi

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H.-J. Lin M.-K. Wu E. Pellegrin S. M. Valvidares Z. W. Li P. Adler A. Todorova R. K\"uchler A. Steppke L. H. Tjeng Z. Hu A. C. Komarek

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classification ❄️ cond-mat.str-el cond-mat.mtrl-sci

keywords ferroelectricitysmfeo3structuremagneticmeasurementssingleaboveabsence

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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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k=0 magnetic structure and absence of ferroelectricity in SmFeO3

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