MOSSBAUER ANALYSIS AND MODELING OF THE ORDER-DISORDER LOCALIZATION-DELOCALIZATION TRANSITION IN THE MIXED-VALENCE SALT DIETHYL BIFERROCENIUM TRI-IODIDE

Authors
BOUKHEDDADEN K LINARES J VARRET F
Citation
K. Boukheddaden et al., MOSSBAUER ANALYSIS AND MODELING OF THE ORDER-DISORDER LOCALIZATION-DELOCALIZATION TRANSITION IN THE MIXED-VALENCE SALT DIETHYL BIFERROCENIUM TRI-IODIDE, Physical review. B, Condensed matter, 47(21), 1993, pp. 14070-14074
Citations number
15
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
47
Issue
21
Year of publication
1993
Pages
14070 - 14074
Database
ISI
SICI code
0163-1829(1993)47:21<14070:MAAMOT>2.0.ZU;2-C
Abstract
The thermal behavior of diethyl biferrocenium tri-iodide has been rein vestigated with further detail in the range 250-300 K by Mossbauer spe ctroscopy. The data strongly suggests the onset of a localized-delocal ized second-order transition, and are successfully reproduced by a coo perative adaptation of the vibronic Piepho-Krausz-Schatz model. The sh ape and amplitude of the expected contribution to the specific heat ar e discussed, as well as other spectroscopic data.