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| Hauptseite > Publikationsdatenbank > Breaking the magnetic symmetry by reorientation transition near 50 K in multiferroic magnetocaloric HoFeO3 > print |
| Hauptseite > Publikationsdatenbank > Breaking the magnetic symmetry by reorientation transition near 50 K in multiferroic magnetocaloric HoFeO3 > print |
| 001 | 903909 | ||
| 005 | 20230123110546.0 | ||
| 024 | 7 | _ | |a 10.1109/TMAG.2021.3082324 |2 doi |
| 024 | 7 | _ | |a 0018-9464 |2 ISSN |
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| 100 | 1 | _ | |a Ovsianikov, Aleksandr |0 P:(DE-HGF)0 |b 0 |e Corresponding author |
| 245 | _ | _ | |a Breaking the magnetic symmetry by reorientation transition near 50 K in multiferroic magnetocaloric HoFeO3 |
| 260 | _ | _ | |a New York, NY |c 2022 |b IEEE |
| 336 | 7 | _ | |a article |2 DRIVER |
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| 520 | _ | _ | |a Using the new polarized neutron diffraction (PND) setup at MLZ the spin reorientation transition in the magnetocaloric orthoferrite HoFeO3 was studied at different wavelength. The various experiments provided reproducible results demonstrating high reliability of the used setup. We show that during the phase transition at TSR=53 K in an external magnetic field applied along crystal c-axis, the ordered magnetic moment of the Fe sublattice rotates from the crystallographic direction b to a not just in the ab plane, but through z axis. This means that the applied field breaks the orthorhombic symmetry allowing some magnetization parallel to z within a short temperature region. Interestingly, this is the same temperature region where large magnetocaloric effect for HoFeO3 was previously reported. A general model of the magnetic structure of HoFeO3, unconstrained by the orthorhombic symmetry, would allow the magnitudes and directions of the moments on each of the 8 magnetic sublattices in the unit cell to be independent of one-another, leading to 24 independent magnetic parameters. PND measurements were used to determine the absolute sign of the Dzyaloshinskii-Moriya interaction (DMI) in the ab plane for the Fe magnetic sublattice at 65 K. DMI plays an important role in the energy balance of the system. |
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| 773 | _ | _ | |a 10.1109/TMAG.2021.3082324 |g p. 1 - 1 |0 PERI:(DE-600)2025397-7 |n 2 |p 2500105 |t IEEE transactions on magnetics |v 58 |y 2022 |x 0018-9464 |
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