In situ X-ray powder diffraction study of one-dimensional polymeric C60 phase transformation under high-pressure

Rozenn Le Parc (1) , Claire Levelut (1) , Julien Haines (2) , V. A. Davydov (3) , A. V. Rakhmanina (3) , R. J. Papoular (4) , E. E. Belova (5) , L. A. Chernozatonskii (5) , H. Allouchi (6) , V. Agafonov (6)

1 LCVN - Laboratoire des colloïdes, verres et nanomatériaux
2 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
3 Institute of High-Pressure Physics
4 LLB - UMR 12 - Laboratoire Léon Brillouin
5 Emanuel Institute of Biochemical Physics
6 GREMAN - UMR 7347 - GREMAN (matériaux, microélectronique, acoustique et nanotechnologies)

Pressure dependence of the orthorhombic polymeric phase of C60 has been studied by angle-dispersive, X-ray powder diffraction in a diamond anvil cell. Transformation to a new phase through the simultaneous action of pressure and X-rays was observed between 0.2 and 1.66 GPa. A possible structure of this new phase of C60 is discussed. Further increase in pressure leads gradually to the irreversible formation of a disordered phase.

Domaines: Systèmes désordonnés et réseaux de neurones [cond-mat.dis-nn]

Rozenn Le Parc, Claire Levelut, Julien Haines, V. A. Davydov, A. V. Rakhmanina, et al.. In situ X-ray powder diffraction study of one-dimensional polymeric C60 phase transformation under high-pressure. Chemical Physics Letters, 2007, 438 (1-3), pp.63-66. ⟨10.1016/j.cplett.2007.02.055⟩. ⟨hal-00175435⟩