RB-87 NMR AND THE T' PROBLEM IN RB3C60

Authors
ZIMMER G THIER KF MEHRING M RACHDI F FISCHER JE
Citation
G. Zimmer et al., RB-87 NMR AND THE T' PROBLEM IN RB3C60, Physical review. B, Condensed matter, 53(9), 1996, pp. 5620-5625
Citations number
27
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
53
Issue
9
Year of publication
1996
Pages
5620 - 5625
Database
ISI
SICI code
0163-1829(1996)53:9<5620:RNATTP>2.0.ZU;2-L
Abstract
Rb-87 NMR was used to investigate the appearance and disappearance of the T' line in Rb3C60. One-dimensional and two-dimensional experiments together with T-2(-1) relaxation data reveal an exchange process only between T and T' lines with an activation energy of 580 meV. Differen t models are discussed in order to explain the data by orientational d isorder, vacancy diffusion, and the off-center position of O sites as well as C-60(3-) reorientations.