Description:
X-ray diffraction and calorimetry data on cubic NaxC60(1<x60, e.g., Tm(x=1.3)=325 K. The ordered phases are the same as in pure C60: simple cubic, space group Pa3¯, but the orientations in the disordered phase are more restricted. We explain how Na stabilizes the ordered phase to rather high T, while K and Rb do not, in terms of Coulomb interactions between C60 molecules and and Na ions which we calculate from the local charge density of C60.
Subject:
X-ray diffraction
Calorimetry
Fullerenes -- Electric properties
Coulomb excitation -- Statistical methods
Atomic, Molecular and Optical Physics
Materials Chemistry
Raw Url:
http://pdxscholar.library.pdx.edu/do/oai/?metadataPrefix=&verb=GetRecord&identifier=oai:pdxscholar.library.pdx.edu:chem_fac-1073
Source:
Chemistry Faculty Publications and Presentations
Repository Record Id:
oai:pdxscholar.library.pdx.edu:chem_fac-1073
Record Title:
Orientational Phase Transition in Na_{x}C_{60} (1
https://pdxscholar.library.pdx.edu/chem_fac/73
https://pdxscholar.library.pdx.edu/context/chem_fac/article/1073/viewcontent/strongin_Orientational_phase_transition.pdf