Zobrazeno 1 - 10
of 62
pro vyhledávání: '"Roger Moret"'
Publikováno v:
Zeitschrift für Kristallographie - Crystalline Materials. 220:1059-1065
In this review we present three representative examples of molecular disorder: substitution disorder for carbon nanotubes in zeolite, coupling between substitution disorder and displacements through the pinning of charge-density waves in one-dimensio
Publikováno v:
Carbon. 43:709-716
X-ray diffraction and Raman spectroscopy have been used to characterize the structures obtained when C60 single crystals are treated at 2 GPa–700 K. Two different experimental procedures have been applied: the temperature is raised before the press
Autor:
SH Yang, Zikang Tang, Thomas Wågberg, Roger Moret, Irene L. Li, Pascale Launois, Haiping Huang
Publikováno v:
The European Physical Journal B - Condensed Matter. 35:371-375
We report the first X-ray diffraction and Raman spectroscopy study of a single crystal of the rare-earth endohedral fullerene Dy@C82. The lattice is found to be body-centered cubic (a = 25.79 A, space group $I\bar {4}3d)$ which is at variance with pr
Autor:
Thomas Wågberg, Pascale Launois, Bertil Sundqvist, Roger Moret, V. A. Davydov, A. V. Rakhmanina, Viatcheslav N. Agafonov
Publikováno v:
The European Physical Journal B - Condensed Matter. 37:25-37
We present a study by Raman spectroscopy and X-ray diffraction/diffuse scattering of C60 single-crystals treated at high-pressure and high-temperature. This allowed us to obtain structural information on the C60 dimer state which can be considered as
Publikováno v:
The European Physical Journal B. 26:29-34
The phase diagram of the newly synthesized mixed crystal C60-biphenyl is investigated as a function of temperature by single-crystal X-ray scattering. Diffuse scattering investigations evidencing complex disorder and local order effects are presented
Publikováno v:
Physical Review Letters. 86:4346-4349
We have performed electron spin resonance (ESR) spectroscopy and x-ray diffraction experiments at low temperature on KC60 single crystals. ESR data reveal the occurrence of a metal-insulator phase transition at about 50 K. In the same temperature ran
Publikováno v:
The European Physical Journal B. 15:445-450
Autor:
Per-Axel Persson, Thomas Wågberg, Per Jacobsson, Jan Jun, Alexander V. Soldatov, Ulf Edlund, Pascale Launois, Dan Johnels, Bertil Sundqvist, Roger Moret
Publikováno v:
Scopus-Elsevier
We discuss the structural and dynamic properties of C60 polymerized under low-P, low-T conditions, and suggest that the disordered mixed orthorhombic-tetragonal-rhombohedral phases produced under t ...
Publikováno v:
Europhysics Letters (EPL). 40:55-60
It is shown that C60 single crystals can be polymerized under relatively modest pressure-temperature conditions. The resulting single crystals exhibit long-range order and they are made up of 12 orientation variants. The structure is orthorhombic wit
Publikováno v:
Europhysics Letters (EPL). 38:219-224
We have used complex conductivity measurements between 20 Hz and 1 MHz to probe the dielectric response in the low-temperature phase of the (2,5(OCH3)2DCNQI)2Li organic conductor. The observed data reveal the existence of the relaxation process which