THE ORIENTATIONAL PHASE-TRANSITION IN C-60 FILMS FOLLOWED BY INFRARED-SPECTROSCOPY

Authors
KAMARAS K AKSELROD L ROTH S MITTELBACH A HONLE W VONSCHNERING HG
Citation
K. Kamaras et al., THE ORIENTATIONAL PHASE-TRANSITION IN C-60 FILMS FOLLOWED BY INFRARED-SPECTROSCOPY, Chemical physics letters, 214(3-4), 1993, pp. 338-344
Citations number
37
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics letters → ACNP
ISSN journal
00092614
Volume
214
Issue
3-4
Year of publication
1993
Pages
338 - 344
Database
ISI
SICI code
0009-2614(1993)214:3-4<338:TOPICF>2.0.ZU;2-9
Abstract
We have measured the infrared spectra of C60 films sublimed on gold fr om 25 to 300 K in the frequency range 15-5000 cm-1. We observed severa l new lines emerging below 250 K which we assign to the infrared activ e modes of C60 in the Pa3BAR phase, based on the temperature dependenc e of these modes around the orientational phase transition. We compare our results with those obtained by other experimental methods and wit h theoretical predictions.