| 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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Hanfland, Michael
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2023Tracking structural phase transitions via single crystal x-ray diffraction at extreme conditions: advantages of extremely brilliant sourcecitations
- 2023Crystal chemistry and compressibility of Fe0.5Mg0.5Al0.5Si0.5O3 and FeMg0.5Si0.5O3 silicate perovskites at pressures up to 95 GPacitations
- 2022High-pressure behavior and crystal-fluid interaction in natural erionite-Kcitations
- 2021High-Pressure Yttrium Nitride, $Y_{5}N_{14}$, Featuring Three Distinct Types of Nitrogen Dimerscitations
- 2021Superconductivity at 253 K in lanthanum–yttrium ternary hydridescitations
- 2021High-Pressure Synthesis of Dirac Materials: Layered van der Waals Bonded BeN$_{4}$ Polymorphcitations
- 2020Static disorder in a perovskite mixed-valence metal–organic frameworkcitations
- 2020Proton mobility in metallic copper hydride from high-pressure nuclear magnetic resonancecitations
- 2020The crystal structures of Fe-bearing MgCO$_{3}$ sp$^{2}$- and sp$^{3}$-carbonates at 98 GPa from single-crystal X-ray diffraction using synchrotron radiationcitations
- 2020The crystal structures of Fe-bearing MgCO3 sp2- and sp3-carbonates at 98 GPa from single-crystal X-ray diffraction using synchrotron radiationcitations
- 2020Face-centered cubic refractory alloys prepared from single-source precursorscitations
- 2020High compressibility of synthetic analogous of binary iridium–ruthenium and ternary iridium–osmium–ruthenium mineralscitations
- 2020The crystal structures of Fe-bearing MgCO3 sp(2)- and sp(3)-carbonates at 98 GPa from single-crystal X-ray diffraction using synchrotron radiationcitations
- 2019High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditionscitations
- 2018Disorder–order transitions in the perovskite metal–organic frameworks [(CH₃)₂NH₂][M(HCOO)₃] at high pressurecitations
- 2018Disorder–order transitions in the perovskite metal–organic frameworks $[(CH_{3})_{2}NH_{2} ][M(HCOO)_{3}]$ at high pressurecitations
- 2018A giant 2-dimensional dielectric response in a compressed hydrogen-bonded hybrid organic-inorganic saltcitations
- 2018Unusually complex phase of dense nitrogen at extreme conditionscitations
- 2017Effect of composition on compressibility of skiagite-Fe-majorite garnetcitations
- 2017Pressure-Induced Phase Transitions in GeTe-Rich Ge-Sb-Te Alloys across the Rhombohedral-to-Cubic Transitions ; Tlakové indukované fázové přechody v GeTe-bohatých slitinách Ge-Sb-Te přes přechody rhombohedricko-to-kubické přechodycitations
- 2016High-pressure behavior of methylammonium lead iodide (MAPbI3) hybrid perovskitecitations
- 2016Structural distortions in the high-pressure polar phases of ammonium metal formatescitations
- 2016Stability of Fe,Al-bearing bridgmanite in the lower mantle and synthesis of pure Fe-bridgmanitecitations
- 2016Superconductivity in Weyl semimetal candidate MoTe2citations
- 2015Compressed Arsenolite As4O6 and Its Helium Clathrate As4O6·2Hecitations
- 2015Cascade of High-Pressure Transitions of Claudetite II and the First Polar Phase of Arsenic(III) Oxidecitations
- 2014Jahn-Teller, Polarity, and Insulator-to-Metal Transition in BiMnO3 at High Pressurecitations
- 2013Pressure-induced hydrogen bond symmetrization in iron oxyhydroxidecitations
- 2010Fe3+ spin transition in CaFe2O4 at high pressurecitations
- 2010Crystal chemistry, superconductivity and magnetism of iron chalcogenides
- 2010Pressure-induced isostructural phase transformation in gamma-B(28)citations
- 2007Pressure-induced metallization and structural phase transition of the Mott-Hubbard insulator TiOBrcitations
Places of action
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article
Jahn-Teller, Polarity, and Insulator-to-Metal Transition in BiMnO3 at High Pressure
Abstract
peer reviewed ; The interaction of coexisting structural instabilities in multiferroic materials gives rise to intriguing coupling phenomena and extraordinarily rich phase diagrams, both in bulk materials and strained thin films. Here we investigate the multiferroic BiMnO3 with its peculiar 6s2 electrons and four interacting mechanisms: electric polarity, octahedra tilts, magnetism, and cooperative Jahn-Teller distortion. We have probed structural transitions under high pressure by synchrotron x-ray diffraction and Raman spectroscopy up to 60 GPa. We show that BiMnO3 displays under pressure a rich sequence of five phases with a great variety of structures and properties, including a metallic phase above 53 GPa and, between 37 and 53 GPa, a strongly elongated monoclinic phase that allows ferroelectricity, which contradicts the traditional expectation that ferroelectricity vanishes under pressure. Between 7 and 37 GPa, the Pnma structure remains remarkably stable but shows a reduction of the Jahn-Teller distortion in a way that differs from the behavior observed in the archetypal orthorhombic Jahn-Teller distorted perovskite LaMnO3.