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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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Toft-Petersen, Rasmus
Technical University of Denmark
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Topics
Publications (4/4 displayed)
- 2020Field-induced magnetic incommensurability in multiferroic Ni 3 TeO 6citations
- 2020Field-induced magnetic incommensurability in multiferroic Ni3TeO6citations
- 2013Structure and Magnetic Properties of Cu 3 Ni 2 SbO 6 and Cu 3 Co 2 SbO 6 Delafossites with Honeycomb Latticescitations
- 2013Structure and Magnetic Properties of Cu3Ni2SbO6 and Cu3Co2SbO6 Delafossites with Honeycomb Latticescitations
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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.