High-pressure synthesis at the origin of new developments in silicon clathrate physical chemistry
Langue
en
Article de revue
Ce document a été publié dans
Journal of Physics: Condensed Matter. 2002, vol. 14, n° 44, p. 11233-11236
IOP Publishing
Résumé en anglais
Since their discovery in 1965, various compositions of clathrate phases of silicon have been investigated and have revealed a direct correlation between the doping element and their properties. The recent development of a ...Lire la suite >
Since their discovery in 1965, various compositions of clathrate phases of silicon have been investigated and have revealed a direct correlation between the doping element and their properties. The recent development of a new synthesis technique using high-pressure and high-temperature (HPHT) conditions allows the synthesis of peculiar clathrate compositions which can show fascinating properties, such as Ba8Si46 which is a sp3 silicon-based structure with superconducting characteristics. This work reports the synthesis of the first binary silicon clathrate doped with an electronegative element and prepared using HPHT: I8Si46 −xIx. Some chemical and structural results are also presented.< Réduire
Mots clés en anglais
High pressure
Solid
Silcon
Clathrates
Origine
Importé de halUnités de recherche