C-60 with pentagon orientational ordering: a dielectric study on fulleritecharged with CO

Citation
M. Gu et al., C-60 with pentagon orientational ordering: a dielectric study on fulleritecharged with CO, PHYS LETT A, 290(3-4), 2001, pp. 193-198
Citations number
27
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS A
ISSN journal
0375-9601 → ACNP
Volume
290
Issue
3-4
Year of publication
2001
Pages
193 - 198
Database
ISI
SICI code
0375-9601(20011112)290:3-4<193:CWPOOA>2.0.ZU;2-2
Abstract
In solid C-60, Complex impedance spectroscopy measurements revealed a relax ational process due to glass transition. However, the spectral features ass ociated with this relaxation became indiscernible, when CO molecules are pr esent at octahedral sites in molar ratio exceeding 0.67. We explain this ph enomenon by the existence of a phase with almost purely pentagon oriented C -60, and this phase is favored by a negative chemical pressure on C-60 latt ice exerted by CO, as well as the electrostatic interaction between the two . (C) 2001 Elsevier Science B.V. All rights reserved.