Mohamed Mézouar

Nanoscale stacking disorder and Jahn-Teller distortion in Brochantite, Cu4SO4(OH)6, revealed by 3D electron diffraction

Piotr Rejnhardt, Wojciech A. Slawinski, Jan Parafiniuk, Roman Gajda et autres

Characterization of functional materials often neglects explicit modeling of structural disorder because of its complexity and the limitations of conventional experimental methods. Yet disorder can strongly affect material properties, and understanding its role is essential for establishing reliable structure-property relationships. Here, we …

pl, fr, ch (code pays fourni par la source)

Superconductivity in Sm-based nickelates

João Elias F. S. Rodrigues, Huiyang Gou, Yehua Huang, Mohamed Mézouar et autres

We aim to investigate the PT phase diagram in Sm-based nickelates using SC-XRD.

cn, fr (code pays fourni par la source)

Stability of Water‐Bearing Aluminous Silica Phases in Subducted Oceanic Crust: Implications for Water Transport to the Core‐Mantle Boundary

Yao Yao, Lu Liu, Ziqiang Yang, Li Zhang et autres

Abstract Geochemical evidence indicates the presence of H 2 O sources in the deep mantle that feed plume‐related magmatism. Understanding water storage and phase changes in multicomponent systems relevant to subducted oceanic crust would provide important constraints on the deep‐Earth water cycle. …

cn, fr, jp (code pays fourni par la source)

Synthesis and stability of high-$T_c$ LaH$_{10\pmδ}$ films at high pressures

Sam Cross, William Thomas, Lawrence Nobbs, Rebecca Nicholls et autres

High-pressure hydrides hold the record for the highest superconducting critical temperatures across all classes of superconductors. Currently lanthanum decahydride, LaH$_{10}$, exhibits the highest critical temperature among binaries, with $T_c \approx$ 250 K at pressures between 140-180 GPa. Here, we report the synthesis …

Observation of Hexagonal Close-Packed Water Ice at Conditions in Ice Giant Planetary Interiors

Anonymous, Gunnar Weck, S. Ninet, Gastón Garbarino et autres

fr (code pays fourni par la source)

FeS phase diagram and thermal Equation of State under high pressure

G. Morard, Daniele Antonangeli, Francesca Miozzi, Marzena Anna Baron et autres

FeS is a key end-member iron alloy relevant to the cores of telluric planets. Here, we present a comprehensive study of the FeS phase diagram up to 150 GPa and 3000 K, using in situ x-ray diffraction measurements in laser-heated diamond anvil …

fr, de, it (code pays fourni par la source)

Symmetrization of strong hydrogen bond under high pressure in bihydroxide-ion-containing NaCu 2 (SO 4 ) 2 ·H 3 O 2 revealed by experimental charge density and single-crystal electron and neutron diffraction study

Piotr Rejnhardt, Roman Gajda, Magdalena Woińska, Jan Parafiniuk et autres

pl, cn, at, fr, us, cz (code pays fourni par la source)

Hercules - Practicals - Crystallography in DAC

Moemen Adel, Adonijah Anindo, Aelton Baptista Santos, Signe Schiott Brummerstedt et autres

This is a proposal for Hercules school, 2 Teams of 4 students will be trained on the beamline from 8:00 to 18:00. The scheduled experiment will consist into observing and measuring solid phases of water present under extreme conditions of pressure.

Égypte, fr, dk, ee, se, de (code pays fourni par la source)

Reemergence of a Polar Instability at High Pressure in KNbO 3

Mohamad Baker Shoker, S. Ramakrishnan, Boris Croes, Olivier Crégut et autres

Ferroelectric instabilities in perovskites are known to be suppressed by a moderate hydrostatic pressure. The prediction of their re-entrance in a much higher pressure regime is well accepted theoretically, but a conclusive experimental confirmation is still missing. Here, we show its occurrence …

lu, fr (code pays fourni par la source)

Re-emergence of a Polar Instability at High Pressure in <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"> <mml:mrow> <mml:msub> <mml:mrow> <mml:mi>KNbO</mml:mi> </mml:mrow> <mml:mrow> <mml:mn>3</mml:mn> </mml:mrow> </mml:msub> </mml:mrow> </mml:math>

Anonymous, S. Ramakrishnan, Boris Croes, O. Crégut et autres

lu, fr (code pays fourni par la source)

A closer look under extreme pressure: sub-micron diffraction mapping in a diamond anvil cell

Cameron Lonsdale, James D. McHardy, C. V. Storm, Konstantin V. Glazyrin et autres

Investigating materials under extreme pressure using diamond anvil cells (DACs) requires very small samples. X-ray diffraction studies of such samples therefore require beams focused to <5μm. Fortuitously, advances in light-source and beamline design mean that modern synchrotrons, such as PETRA III and …

gb, de, fr (code pays fourni par la source)

Synthesis and Crystal Structure of Anhydrous Di-iodyl Carbonate (IO 2 ) 2 [CO 3 ], Hosting I 5+ -Cations

Dominik Spahr, Lkhamsuren Bayarjargal, Lukas Brüning, Valentin N. Kovalev et autres

High Resolution Image Download MS PowerPoint Slide The anhydrous di-iodyl carbonate (IO 2 ) 2 [CO 3 ] has been synthesized in a laser-heated diamond anvil cell at 30(2) GPa and 1600(200) K by a reaction of I 2 O 5 with …

de, gb, fr (code pays fourni par la source)