Zobrazeno 1 - 10
of 49
pro vyhledávání: '"R. Argoud"'
Publikováno v:
Journal of Non-Crystalline Solids. :525-530
X-ray absorption fine structure (XAFS) measurements for expanded fluid Se at high temperatures and pressures up to 1650°C and 600 bar have been carried out to investigate the change of local structure with volume expansion. The electronic property o
Publikováno v:
Journal of Alloys and Compounds. 242:80-84
The crystal structure of Nd2Fe14B has been analysed at 20 and 290 K by using the four-circle X-ray diffraction technique. The room temperature tetragonal structure (space groupP42tmum) has been accurately determined. At low temperature, the monoclini
Publikováno v:
Journal of Alloys and Compounds. 231:422-426
We have developed a systematic analysis by gravimetry apparatus dedicated to metal-hydrogen processes under pressures ranging from 0.1 Pa to 10 MPa and temperatures ranging from 20 to 800 °C. This equipment allows us to study the metal-hydrogen phas
Publikováno v:
Journal of Solid State Chemistry. 112:424-428
The possibility of hole doping in Ca 0.85 Sr 0.15 CuO 2 was studied by either partial substitution of alkaline-earth cations by Li and Na or by annealing in oxygen pressures up to 200 atm. Li substitution does not modify significantly the cell parame
Autor:
M. Marezio, Christian Colliex, Miguel Á. Alario-Franco, T. Fournier, J. Chenavas, J.L. Baldonedo, Pierre Bordet, M.F. Gorius, J.J. Capponi, R. Argoud, Catherine Chaillout, B. Souletie, M. Perroux, André Sulpice, J.L. Tholence
Publikováno v:
Physica C: Superconductivity. 231:103-108
By means of electron microscopy and diffraction together with EDX and EELS, we have confirmed the main characteristics of the structure of the recently discovered HTSC family of “copper/carbonate cuprates”. These can be obtained at high pressure
Publikováno v:
Journal of Magnetism and Magnetic Materials. 130:367-376
Single-crystal X-ray diffraction studies have been performed at low temperature (T=15 K) on the BaZnFe6O11 and BaCoFe6O11 (Y-type) room-temperature ferrimagnetic hexagonal ferrites. From the refined structures, we notice high thermal vibrations for t
Publikováno v:
Materials Research Bulletin. 28:741-747
The conditions of synthesis and stabilization of murdochite-type Cu 6 O 8 PbCl, by solid state reaction are described. The synthesis of single-phase murdochite-type cuprate requires high oxygen pressure and a copper-deficient starting mixture. Pure p
Publikováno v:
Journal of Crystal Growth. 130:238-244
Large CeRu2Si2 and Ce1−xLaxRu2Si2 single crystals have been grown using a “tri-arc” Czochralski technique. The structures of the ternary silicides are characterized by the exchange of transition metal and silicon positions. The existence of a s
Publikováno v:
ChemInform. 28
Publikováno v:
Journal of synchrotron radiation. 8(Pt 2)
X-ray absorption spectroscopy (XAS) experiments have been performed on 1.0 and 1.6 M ZnBr2 aqueous solutions under ambient to supercritical conditions. Both the X-ray absorption near-edge structure (XANES) and the extended X-ray absorption fine struc