Structural phase transition accompanied by metal-insulator transition in PrRU4P12

Citation
Ch. Lee et al., Structural phase transition accompanied by metal-insulator transition in PrRU4P12, J PHYS-COND, 13(2), 2001, pp. L45-L48
Citations number
6
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN journal
0953-8984 → ACNP
Volume
13
Issue
2
Year of publication
2001
Pages
L45 - L48
Database
ISI
SICI code
0953-8984(20010115)13:2<L45:SPTABM>2.0.ZU;2-O
Abstract
A structural phase transition has been found using electron diffraction tec hnique in PrRu4P12 accompanied by a metal-insulator (M-I) transition (TMI = 60 K). Weak superlattice spots appeared at (H, K, L) (H + K + L = odd) pos ition at a temperature of T = 12 K and 40 K. Above T = 70 K, the spots comp letely vanished. The space group of the low-temperature phase is probably P m (3) over bar. This is the first observation of a symmetry other than Im ( 3) over bar in skutterudite compounds.