REORIENTATIONAL DYNAMICS OF C-60 IN THE SOLID-STATE - AN AVOIDED LEVEL-CROSSING MUON SPIN-RESONANCE STUDY

Authors
RODUNER E PRASSIDES K MACRAE RM THOMAS IM NIEDERMAYER C BINNINGER U BERNHARD C HOFER A REID ID
Citation
E. Roduner et al., REORIENTATIONAL DYNAMICS OF C-60 IN THE SOLID-STATE - AN AVOIDED LEVEL-CROSSING MUON SPIN-RESONANCE STUDY, Chemical physics, 192(3), 1995, pp. 231-237
Citations number
38
Categorie Soggetti
Physics, Atomic, Molecular & Chemical
Journal title
Chemical physics → ACNP
ISSN journal
03010104
Volume
192
Issue
3
Year of publication
1995
Pages
231 - 237
Database
ISI
SICI code
0301-0104(1995)192:3<231:RDOCIT>2.0.ZU;2-O
Abstract
The dynamics of the muonium (Mu) adduct to C-60 in the crystalline sta te have been investigated using avoided level crossing muon spin reson ance (ALC-mu SR). The motion of C-60 in the orientationally ordered ph ase (T < 260 K) is well described by a spherical diffusion or isotropi c jump-reorientation motion with an Arrhenius activation energy of 176 (1) meV and a frequency factor of 2.95(13) x 10(-12) s. This is in str iking contrast to the behaviour of MuC(70) adducts whose reorientation al motion fits well in a pseudo-static model with a temperature depend ent order parameter,