| 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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Coak, Matthew John
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (6/6 displayed)
- 2024Magnetotransport of Sm2Ir2O7 across the pressure-induced quantum-critical phase boundarycitations
- 2023Asymmetric phase diagram and dimensional crossover in a system of spin-1/2 dimers under applied hydrostatic pressurecitations
- 2022Pressure-induced shift of effective Ce valence, Fermi energy and phase boundaries in CeOs4Sb12citations
- 2021Pressure-induced large increase of Curie temperature of the van der Waals ferromagnet VI3citations
- 2021Emergent magnetic phases in pressure-tuned van der Waals antiferromagnet FePS3citations
- 2015Low Temperature Resistivity of the Rare Earth Diborides (Er, Ho, Tm)B$_2$
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article
Pressure-induced large increase of Curie temperature of the van der Waals ferromagnet VI3
Abstract
Evolution of magnetism in single crystals of the van der Waals compound VI<sub>3</sub> in external pressure up to 7.3 GPa studied by measuring magnetization and ac magnetic susceptibility is reported. Four magnetic phase transitions, at T<sub>1</sub>=54.5K, T<sub>2</sub>=53K, T<sub>C</sub>=49.5K, and T<sub>FM</sub>=26K, respectively, have been observed at ambient pressure. The first two have been attributed to the onset of ferromagnetism in specific crystal-surface layers. The bulk ferromagnetism is characterized by the magnetic ordering transition at Curie temperature T<sub>C</sub> and the transition between two different ferromagnetic phases T<sub>FM</sub>, accompanied by a structure transition from monoclinic to triclinic symmetry upon cooling. The pressure effects on magnetic parameters were studied with three independent techniques. T<sub>C</sub> was found to be almost unaffected by pressures up to 0.6 GPa whereas T<sub>FM</sub> increases rapidly with increasing pressure and reaches T<sub>C</sub> at a triple point at ≈ 0.85 GPa. At higher pressures, only one magnetic phase transition is observed moving to higher temperatures with increasing pressure to reach 99 K at 7.3 GPa. In contrast, the low-temperature bulk magnetization is significantly reduced by applying pressure (by more than 50% at 2.5 GPa) suggesting a possible pressure-induced reduction of vanadium magnetic moment. First-principles calculations of VI<sub>3</sub> under pressure allow us to ascribe the evolution of T<sub>C</sub> with pressure to the reduction of interplanar distance, including the observed slope change at 0.6 GPa. These calculations also describe the associated band gap closing, showing that with a modest compression the material would become metallic. Overall, the large pressure range covered corresponds to a significant change of interplanar interactions. The obtained data thus allow us to shed light on how does the transition between the three-dimensional (3D) and quasi-2D system affect magnetic interactions in the system.