| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Lefmann, Kim
University of Copenhagen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2023Multiple unconventional charge density wave transitions in LaPt$_2$Si$_2$ superconductor clarified with high-energy X-ray diffractioncitations
- 2021Material Properties Particularly Suited to be Measured with Helium Scattering: Selected Examples from 2D Materials, van der Waals Heterostructures, Glassy Materials, Catalytic Substrates,Topological Insulators and Superconducting Radio Frequency Materialscitations
- 2021Material properties particularly suited to be measured with helium scattering: selected examples from 2D materials, van der Waals heterostructures, glassy materials, catalytic substrates, topological insulators and superconducting radio frequency materialscitations
- 2020Field-induced magnetic incommensurability in multiferroic Ni 3 TeO 6citations
- 2020Coherent Epitaxial Semiconductor-Ferromagnetic Insulator InAs/EuS Interfacescitations
- 2020Coherent Epitaxial Semiconductor–Ferromagnetic Insulator InAs/EuS Interfaces: Band Alignment and Magnetic Structurecitations
- 2020Field-induced magnetic incommensurability in multiferroic Ni3TeO6citations
- 2017Off-axis spin orientation in goethite nanoparticlescitations
- 2017Spin orientation in solid solution hematite-ilmenitecitations
- 2015Polarized neutron powder diffraction studies of antiferromagnetic order in bulk and nanoparticle NiOcitations
- 2011Spin reorientation in α-Fe2O3 nanoparticles induced by interparticle exchange interactions in alpha-Fe2O3/NiO nanocompositescitations
- 2004Interparticle interactions in composites of nanoparticles of ferrimagnetic (gamma-Fe2O3) and antiferromagnetic (CoO,NiO) materialscitations
Places of action
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article
Field-induced magnetic incommensurability in multiferroic Ni3TeO6
Abstract
Using single-crystal neutron diffraction we show that the magnetic structure Ni<sub>3</sub>TeO<sub>6 </sub>at fields above 8.6 T along the <i>c</i><b> </b>axis and low temperature changes from a commensurate collinear antiferromagnetic structure with spins along <i>c</i> and ordering vector <i>Q</i><sub>C</sub>=(001.5) to a conical spiral with propagation vector <i>Q</i><sub>IC</sub>=(001.5±<i>δ</i>), <i>δ</i>∼0.18, having a significant spin component in the (<i>a</i>,<i>b</i>) plane. We determine the phase diagram of this material in magnetic fields up to 10.5 T along <i>c</i> and show the phase transition between the low field and conical spiral phases is of first order by observing a discontinuous jump of the ordering vector. <i>Q</i><sub>IC</sub> is found to drift both as a function of magnetic field and temperature. Preliminary inelastic neutron-scattering data reveal that the spin-wave gap in zero field has minima exactly at <i>Q</i><sub>IC</sub> and a gap of about 1.1 meV consisting with a crossover around 8.6 T. Further, a simple magnetic Hamiltonian accounting in broad terms for these is presented. Our findings confirm the exclusion of the inverse Dzyaloshinskii-Moriya interaction as a cause for the giant magnetoelectric due to symmetry arguments. In its place we advocate for the symmetric exchange striction as the origin of this effect.