Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Tristan Le Bihan"'
Autor:
François Usseglio-Viretta, Julie Villanova, Pierre Bleuet, Isabelle Kieffer, Aurore Mansuy, Tristan Le Bihan, Jérôme Laurencin, Gérard Delette, Elisa Lay-Grindler
Publikováno v:
ECS Transactions. 57:3177-3187
Microstructural evolution of a Solid Oxide Electrolyser Cell (SOEC) La0.6Sr0.4Co0.2Fe0.8O3 (LSCF) anode is investigated using 3D reconstruction techniques both on a reference and a long-term tested cell. In this framework, reconstructions have been o
Publikováno v:
High Pressure Research. 25:235-242
We have investigated anisotropic compression effects observed in uranium metal under high pressures by analyzing data obtained with different X-ray diffraction techniques as well as data on samples obtained with different pressure media. Our analysis
Publikováno v:
Journal of Nuclear Science and Technology. 39:45-48
The structural behavior of an Am0.5Cm0.5 alloy has been recently investigated at the High-Pressure-ID30 beamline of the ESRF. The use of synchrotron radiation, diamond anvil cell and 2D detector has allowed us to collect very high quality diffraction
Publikováno v:
Journal of Physics: Condensed Matter. 14:10583-10588
Structural phase transitions of titanium (Ti) have been investigated at pressures up to 220 GPa at room temperature using a monochromatic synchrotron x-ray diffraction technique. At 140 GPa, the hexagonal phase (ω-Ti) was transformed into an orthorh
Publikováno v:
High Pressure Research. 22:495-499
The full profile refinement of the structure of the calcium-ferrite type NaAlSiO 4 was carried out at pressures up to 40 GPa. This high-pressure modification of NaAlSiO 4 is known to be stable at least to 75 GPa and 2450 K that corresponds to a middl
Autor:
S. Rekhi, Surendra K. Saxena, Leonid Dubrovinsky, F. Tutti, Natalia Dubrovinskaia, Tristan Le Bihan
Publikováno v:
European Journal of Mineralogy. 13:479-483
In situ , x-ray studies in diamond anvil cells at pressures over 80 GPa were used to determine a stable silica phase at extreme conditions. We demonstrate that so far unidentified phases obtained on compression of α-cristobalite and a new dense sili
Publikováno v:
Journal of Nuclear Materials. 288:66-75
Phase equilibria in the system Mo–Si–U were established at 1400°C for the region less than 60 at.% U and at 850°C for the region less than 70 at.% Si by optical microscopy, EMPA and X-ray diffraction. Three ternary compounds were observed and c
Publikováno v:
American Mineralogist. 85:364-371
New synchrotron X-ray diffraction data confirm our previous report of the transformation of the hexagonal close-packed (hcp) phase of iron to the Pbcm orthorhombic lattice (β-iron) at high P and T . The volume differences between the e and β, and t
Publikováno v:
Physical Review B. 61:3139-3142
A structural phase transition and the equation of state of the simple-hexagonal (sh) phase, $P\ensuremath{-}V,$ of phosphorus were investigated at pressures up to 280 GPa using monochromatic synchrotron x-ray diffraction. The $P\ensuremath{-}V$ phase
Autor:
Tristan Le Bihan, Craig M. Brown, Kenneth D. Knudsen, Kosmas Prassides, Alexandros Lappas, Katsumi Tanigaki, Mohamed Mezouar, Serena Margadonna
Publikováno v:
Journal of Solid State Chemistry. 145:471-478
The structural properties of the Na2CsC60 fulleride have been studied by synchrotron X-ray powder diffraction at both ambient and elevated pressures. Complementary neutron diffraction measurements at high pressure were also performed. We find no evid