| 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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Fujita, Koji
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Topics
Publications (9/9 displayed)
- 2024Anionic Sublattices in Halide Solid Electrolytes: A Case Study with the High‐Pressure Phase of Li<sub>3</sub>ScCl<sub>6</sub>citations
- 2024Anionic Sublattices in Halide Solid Electrolytes: A Case Study with High‐Pressure Phase of Li3ScCl6
- 2023Large Perpendicular Magnetic Anisotropy Induced by an Intersite Charge Transfer in Strained EuVO2H Filmscitations
- 2023Land Surface Modeling in the Himalayascitations
- 2017Giant faraday rotation through ultra-small Fe0n clusters in superparamagnetic FeO-SiO2 vitreous films
- 2015A labile hydride strategy for the synthesis of heavily nitridized BaTiO<sub>3</sub>citations
- 2014Inversion Symmetry Breaking by Oxygen Octahedral Rotations in the Ruddlesden-Popper NaRTiO<sub>4</sub> Familycitations
- 2013A-Site-Ordered Perovskite $mathrm{MnCu_3V_4O_{12}}$ with a 12-Coordinated Manganese(II)citations
- 2008Remarkable magneto-optical properties of europium selenide nanoparticles with wide energy gapscitations
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article
Inversion Symmetry Breaking by Oxygen Octahedral Rotations in the Ruddlesden-Popper NaRTiO<sub>4</sub> Family
Abstract
Rotations of oxygen octahedra are ubiquitous, but they cannot break inversion symmetry in simple perovskites. However, in a layered oxide structure, this is possible, as we demonstrate here in A-site ordered Ruddlesden-Popper NaRTiO<sub>4</sub> (R denotes rare-earth metal), previously believed to be centric. By revisiting this series via synchrotron x-ray diffraction, optical second-harmonic generation, piezoresponse force microscopy, and first-principles phonon calculations, we find that the low-temperature phase belongs to the acentric space group P4̄2<sub>1</sub>m, which is piezoelectric and nonpolar. The mechanism underlying this large new family of acentric layered oxides is prevalent, and could lead to many more families of acentric oxides.