Pressure-induced huge increase of Curie temperature of the van der Waals ferromagnet VI3

Abstract

Evolution of magnetism in single crystals of the van der Waals compound VI3 in external pressure up to 7.3 GPa studied by measuring magnetization and ac magnetic susceptibility is reported. Four magnetic phase transitions, at T1 = 54.5 K, T2 = 53 K, TC = 49.5 K, and TFM = 26 K, 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 TC and the transition between two different ferromagnetic phases TFM, accompanied by a structure transition from monoclinic to triclinic symmetry upon cooling. The pressure effects on magnetic parameters were studied with three independent techniques. TC was found to be almost unaffected by pressures up to 0.6 GPa whereas TFM increases rapidly with increasing pressure and reaches TC 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 dramatically reduced by applying pressure (by more than 50% at 2.5 GPa) suggesting a possible pressure-induced reduction of vanadium magnetic moment. We discussed these results in light of recent theoretical studies to analyze exchange interactions and provide how to increase the Curie temperature of VI3.

20 pages, 16 figures

References in corpus (11)

• Magnetic 2D materials and heterostructures
• Ferromagnetic van der Waals crystal VI3
• VI3 - a new layered ferromagnetic semiconductor
• Bulk properties of van-der-Waals hard ferromagnet VI3
• High-Temperature Ferromagnetic Semiconductors: Janus Monolayer Vanadium Trihalides
• Effect of hydrostatic pressure on ferromagnetism in two-dimensional CrI${}_3$
• Tuning Magnetism in Layered Magnet VI${}_3$: A Theoretical Study
• Pressure-Induced Modification of Anomalous Hall Effect in Layered Fe${}_3$GeTe${}_2$
• Crystal Structures and Phase Transitions of the van-der-Waals Ferromagnet VI3
• Role of non-locality in exchange-correlation for magnetic 2D van der Waals materials
• Valence band electronic structure of the van der Waals ferromagnetic insulators: VI${}_3$ and CrI${}_3$

Cited by in corpus (17)

• Large orbital magnetic moment in VI3
• Tuning the Magnetic and Electronic Properties of Monolayer VI3 by 3d Transition Metal Doping: A First-Principles Study
• Strain tunability of perpendicular magnetic anisotropy in van der Waals ferromagnets VI3
• Magnetic order and its interplay with structure phase transition in van der Waals ferromagnet VI${}_3$
• Magnetic anisotropy in van-der-Waals ferromagnet VI3
• Strong effects of uniaxial pressure and short-range correlations in Cr2Ge2Te6
• Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI${}_3$
• Signatures of Kitaev interactions in the van der Waals ferromagnet VI3
• The surface degradation and its impact on the magnetic properties of bulk VI_3
• Crystal structure evolution in the van der Waals transition metal trihalides
• Probing magnetism in exfoliated VI${}_3$ layers with magnetotransport
• Strong uniaxial pressure dependencies evidencing spin-lattice coupling and spin fluctuations in Cr${}_2$Ge${}_2$Te${}_6$
• Robust intralayer antiferromagnetism and tricriticality in a van der Waals compound: VBr3 case
• Magnetic interactions and spin excitations in van der Waals ferromagnet VI${}_3$
• Terahertz Magnetic and Lattice Excitations in van der Waals Ferromagnet VI3
• High-spin orbital interactions across van der Waals gaps controlling the interlayer ferromagnetism in van der Waals ferromagnets
• Lattice and magnetic structure in the van der Waals antiferromagnet VBr3