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| Home > Publications database > A new polar symmetry of huebnerite $\mathrm{(MnWO_{4})}$ with ferrodistortive domains |
| Home > Publications database > A new polar symmetry of huebnerite $\mathrm{(MnWO_{4})}$ with ferrodistortive domains |
| Journal Article | PUBDB-2015-04737 |
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2015
North-Holland Publ. Co.
Amsterdam
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Please use a persistent id in citations: doi:10.1016/j.jmmm.2015.06.039
Abstract: Large-size single-crystal samples of huebnerite natural multiferroic MnWO$_{4}$ were analyzed by neutron and synchrotron X-ray single-crystal diffraction as well as by polarized Raman spectroscopy. Both neutron and X-ray diffraction analyzes reveal polar space-group symmetry P2 for the nuclear structure of huebnerite via the detection of weak reflections h0l (l=odd) forbidden for the gliding plane c. Renninger scans of the reflection 301 on the neutron single-crystal diffractometer RESI (FRM-II) could confirm the absence of the gliding plane c in both para- and antiferromagnetic states of huebnerite. The symmetry breaking could be explained by structure analyzes with neutron single crystal diffraction data at 293 K revealing that two Mn atoms in P2 are displaced independently along the b axis from their equilibrium position at a polar point site, C$_{2}$ in P2/c. Micro X-ray diffraction and Raman-scattering mapping reveal a ferrodistortive domain texture in the room-temperature paramagnetic state of huebnerite, which is attributed to P2 domain formation through a proper ∼180° rotation about the reciprocal-space axis c*.
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; Current Contents - Physical, Chemical and Earth Sciences ; IF < 5 ; JCR ; Nationallizenz
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