Louis Hennet
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View article: All-optical measurements of MORB-glass density at high pressure hint at a stiffness-composition relation in silicate glasses
All-optical measurements of MORB-glass density at high pressure hint at a stiffness-composition relation in silicate glasses Open
International audience
View article: Liquid Structure of Magnesium Aluminates
Liquid Structure of Magnesium Aluminates Open
Magnesium aluminates (MgO)x(Al2O3)1−x belong to a class of refractory materials with important applications in glass and glass–ceramic technologies. Typically, these materials are fabricated from high-temperature molten phases. However, du…
View article: Iron coordination in liquid FeAl <sub>2</sub> O <sub>4</sub>
Iron coordination in liquid FeAl <sub>2</sub> O <sub>4</sub> Open
The structure of aerodynamically levitated liquid was measured by neutron diffraction with isotope substitution (NDIS). Classical and ab initio molecular dynamics simulations were performed and their results were found to be in …
View article: Structure and related properties of amorphous magnesium aluminosilicates
Structure and related properties of amorphous magnesium aluminosilicates Open
The structure of the magnesium aluminosilicate glasses (MgO)x(Al2O3)y(SiO2)1–x–y, where 0 ≤ x < 1, 0 ≤ y < 1 and x + y < 1, was explored by neutron and x-ray diffraction, aided by the results from 27Al magic angle spinning nuclear magne…
View article: From Short to Medium Range Order in Glasses and Melts by Diffraction and Raman Spectroscopy
From Short to Medium Range Order in Glasses and Melts by Diffraction and Raman Spectroscopy Open
International audience
View article: Chemical Analysis of Trace Elements at the Nanoscale in Samples Recovered from Laser-Heated Diamond Anvil Cell Experiments
Chemical Analysis of Trace Elements at the Nanoscale in Samples Recovered from Laser-Heated Diamond Anvil Cell Experiments Open
<p>High pressure and high temperature experiments performed with laser-heated diamond anvil cells (LH-DAC) are being extensively used in geosciences in order to study matter at conditions prevailing in planetary interiors. Due to the…
View article: Structure of water-in-salt and water-in-bisalt electrolytes
Structure of water-in-salt and water-in-bisalt electrolytes Open
We report results for the structures of “water-in-salt” and “water-in-bisalt” electrolytes obtained with high-energy X-ray diffraction and polarized and unpolarized neutron diffraction, compared with two sets of Molecular Dynamics simulati…
View article: Whitlockite structures in kidney stones indicate infectious origin: a scanning electron microscopy and Synchrotron Radiation investigation
Whitlockite structures in kidney stones indicate infectious origin: a scanning electron microscopy and Synchrotron Radiation investigation Open
In this contribution dedicated to kidney stones containing Whitlockite (Wk), we addressed three questions, namely, the presence of iron in Wk, the relationship between bacterial imprints and the presence of Wk, and finally the relationship…
View article: Structure of levitated Si–Ge melts studied by high-energy x-ray diffraction in combination with reverse Monte Carlo simulations
Structure of levitated Si–Ge melts studied by high-energy x-ray diffraction in combination with reverse Monte Carlo simulations Open
The short-range order in liquid Si, Ge and binary Si x –Ge 1− x alloys ( x = 0.25, 0.50, 0.75) was studied by x-ray diffraction and reverse Monte Carlo simulations. Experiments were performed in the normal and supercooled liquid states by …
View article: High‐sensitivity Raman imaging of the surface of casted glass plates
High‐sensitivity Raman imaging of the surface of casted glass plates Open
Glass manufacturing processes are prone to induce local fluctuations of the glass properties, to which Raman spectroscopy is highly sensitive. In this work, Raman imaging is used to investigate the homogeneity of the Raman response at the …
View article: Aqueous alteration and bioalteration of a synthetic enstatite chondrite
Aqueous alteration and bioalteration of a synthetic enstatite chondrite Open
Understanding the transformations of highly reduced enstatite chondrites (EC) in terrestrial environments, even on very short timescales, is important to make the best use of the cosmochemical and mineralogical information carried by these…
View article: Lithium Borates from the Glass to the Melt: A Temperature-Induced Structural Transformation Viewed from the Boron and Oxygen Atoms
Lithium Borates from the Glass to the Melt: A Temperature-Induced Structural Transformation Viewed from the Boron and Oxygen Atoms Open
A multiedge study of the local structure of lithium borate glasses and melts has been carried out using X-ray Raman scattering (XRS) as a function of temperature. Thanks to a wide range of compositions, from pure B2O3 up to the metaborate …
View article: Melting properties of pyrolite: implication for chemical segregation in the primitive Earth’s mantle.
Melting properties of pyrolite: implication for chemical segregation in the primitive Earth’s mantle. Open
International audience
View article: Carbon in the deep Earth: The fate of magnesite in the lower mantle.
Carbon in the deep Earth: The fate of magnesite in the lower mantle. Open
International audience
View article: In situ observation of nanolite growth in volcanic melt: A driving force for explosive eruptions
In situ observation of nanolite growth in volcanic melt: A driving force for explosive eruptions Open
This study shows how a few nanometer-sized crystals markedly increase the viscosity of a magma leading to explosive eruptions.
View article: From Molten Calcium Aluminates through Phase Transitions to Cement Phases
From Molten Calcium Aluminates through Phase Transitions to Cement Phases Open
Crystalline calcium aluminates are a critical setting agent in cement. To date, few have explored the microscopic and dynamic mechanism of the transitions from molten aluminate liquids, through the supercooled state to glassy and crystalli…
View article: Configurational constraints on glass formation in the liquid calcium aluminate system
Configurational constraints on glass formation in the liquid calcium aluminate system Open
We report new time-resolved synchrotron x-ray diffraction (SXRD) measurements to track structural transformations in calcium-aluminate (CaO)x(Al2O3)1-x liquids during glass formation, and review recent progress in neutron diffraction with …
View article: Synthesis and Characterization of Double Solid Solution (Zr,Ti)<sub>2</sub>(Al,Sn)C MAX Phase Ceramics
Synthesis and Characterization of Double Solid Solution (Zr,Ti)<sub>2</sub>(Al,Sn)C MAX Phase Ceramics Open
Quasi phase-pure (>98 wt %) MAX phase solid solution ceramics with the (Zr,Ti)2(Al0.5,Sn0.5)C stoichiometry and variable Zr/Ti ratios were synthesized by both reactive hot pressing and pressureless sintering of ZrH2, TiH2, Al, Sn, and C po…
View article: Structure of Strontium Aluminosilicate Glasses from Molecular Dynamics Simulation, Neutron Diffraction, and Nuclear Magnetic Resonance Studies
Structure of Strontium Aluminosilicate Glasses from Molecular Dynamics Simulation, Neutron Diffraction, and Nuclear Magnetic Resonance Studies Open
The structure of strontium glasses with the composition (SiO2)1-2 x(Al2O3) x(SrO) x ( R = [SrO]/[Al2O3] = 1) and (SiO2)1-4 x(Al2O3) x(SrO)3 x ( R = 3) has been explored experimentally over both short- and intermediate-length scales using n…
View article: Combined Solid-State NMR and Molecular Dynamics Study of the Structure of Strontiuln-Aluminosilicate glasses
Combined Solid-State NMR and Molecular Dynamics Study of the Structure of Strontiuln-Aluminosilicate glasses Open
Solid-statc NMR has firmly established itself as a method of choice for provinding key information for the elucidation of glass atomic-scale structure. Recently, a methodology based on the combination of DFT-NMR calculations with molecular…
View article: Combined Solid-State NMR and Molecular Dynamics Study of the Structure of Strontium-Aluminosilicate glasses
Combined Solid-State NMR and Molecular Dynamics Study of the Structure of Strontium-Aluminosilicate glasses Open
Solid-state NMR has firmly established itself as a method of choice for providing key information for the elucidation of glass atomic-scale structure. Recently, a methodology based on the combination of DFT-NMR calculations with molecular …