%0 Journal Article %T Order from disorder %+ Polymers Division, NIST (NIST) %+ Institut des Sciences de la Terre (ISTerre) %A Wang, Dongbo %A Fernandez-Martinez, Alejandro %< sans comité de lecture %@ 0036-8075 %J Science %I American Association for the Advancement of Science (AAAS) %V 337 %N 6096 %P 812-813 %8 2012-08-17 %D 2012 %R 10.1126/science.1226048 %K order %K disorder %K C60 %K amorphous %K cluster %K high-pressure %K amorphization %Z 61.43.-j %Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles %X Our understanding of the atomic structure of materials relies on our ability to describe structural characteristics such as the short-range order (in the case of liquids or amorphous materials) or the periodicity inherent to crystalline materials. On page 825 of this issue, L. Wang et al. ( 1) challenge our understanding of the inherent disorder that can be present in a crystal by presenting evidence for a crystalline material composed of amorphous clusters. They show that C60 molecules from the crystalline solvated fullerene phase C60*m-xylene undergo an order-to-disorder transition under compression at ≈35 GPa but keep their translational symmetry. A material can still possess long-range order even though its fundamental building blocks are disordered. %G English %L insu-00724124 %U https://insu.hal.science/insu-00724124 %~ INSU %~ UNIV-SAVOIE %~ UGA %~ CNRS %~ UNIV-GRENOBLE1 %~ OSUG %~ ISTERRE %~ USMB-COMUE