2018
DOI: 10.1103/physrevb.98.134413
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Single-crystal neutron diffraction study of hexagonal multiferroic YbMnO3 under a magnetic field

Abstract: We report single-crystal neutron diffraction study of the magnetic structure of the multiferroic compound YbMnO3, a member of the hexagonal manganite family, in zero-field and under a magnetic field applied along the c-axis. We propose a scenario for the zero-field magnetic ordering and for the field-induced magnetic reorientation of the Mn and of the two Yb on distinct crystallographic sites, compatible with the macroscopic measurements, as well as with previous powder neutron diffraction experiment and resul… Show more

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Cited by 10 publications
(11 citation statements)
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“…2(b), suggesting the onset of intrinsic magnetic phase transition at this temperature. In addition, we find that the intensity curve of (102) combines the features of the ( 101) and (100) reflections, indicating the involvement of magnetic contribution from both Fe 3+ and Yb 3+ , similar to the case of YbMnO3 [28]. In RFeO3 and RMnO3 systems, it is well known that the R 3+ -Fe 3+ /R 3+ -Mn 3+ coupling is strong and the Fe 3+ /Mn 3+ spin ordering may induce the R 3+ spin ordering too as the concurrent sequence.…”
Section: Neutron Diffraction For Magnetic Structuresupporting
confidence: 62%
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“…2(b), suggesting the onset of intrinsic magnetic phase transition at this temperature. In addition, we find that the intensity curve of (102) combines the features of the ( 101) and (100) reflections, indicating the involvement of magnetic contribution from both Fe 3+ and Yb 3+ , similar to the case of YbMnO3 [28]. In RFeO3 and RMnO3 systems, it is well known that the R 3+ -Fe 3+ /R 3+ -Mn 3+ coupling is strong and the Fe 3+ /Mn 3+ spin ordering may induce the R 3+ spin ordering too as the concurrent sequence.…”
Section: Neutron Diffraction For Magnetic Structuresupporting
confidence: 62%
“…Considering the polycrystalline nature of the sample, the ME coupling is often week and might be obscure if the signal is intrinsically low, or if the magnetic energy gain is not sufficient to overcome the energy barrier between multiple grains. Nevertheless, it should be mentioned that a varied P of 8 C/m 2 was observed in single crystal h-YbMnO3 [28], thus the value in our case is considered as intrinsic signal. Hence, high-quality of single crystal hexagonal rareearth ferrite is highly recommended to quantify the ME coupling phenomena by applying magnetic field along the different crystallographic directions, and unveil the underlying physical origin that is highly correlated to the Fe 3+ ordering, and Fe 3+ -R 3+ interactions.…”
Section: Ferroelectricity and Magnetoelectric Couplingmentioning
confidence: 83%
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“…The ions R 3+ are situated on two Wyckoff sites 2a and 4b. For magnetic rare earths, they also order at lower temperature, either polarized by the Mn molecular field (site 4b) or from their mutual interaction in a temperature range of few K (site 2a) [22,23].…”
Section: Introductionmentioning
confidence: 99%
“…2c). The best refinement of the magnetic part of neutron powder diffraction pattern is achieved by assuming an amplitude modulated (sine-wave) structure of Yb 3+ magnetic moments, pointing along the a axis with the amplitude 1.32( 7) µ B at T = 1.3 K. Such a value of magnetic moment is typical for Yb in magnetic compounds Tsujii et al [2015], Chattopadhyay et al [2018], Yaouanc et al [2016], Ueland et al [2014] and may be attributed to the crystal electric field effects and a partial screening due to the Kondo mechanism. The structure locks into a commensurate state with k z = 1/4 at T lock−in ≈ 8 K.…”
mentioning
confidence: 99%