RENY, Edouard; CROS, Christian; POUCHARD, Michel; YAMANAKA, S.

doi:10.1088/0953-8984/14/44/459

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RENY, Edouard
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

CROS, Christian
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

POUCHARD, Michel
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Journal of Physics: Condensed Matter. 2002, vol. 14, n° 44, p. 11233-11236

IOP Publishing

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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.< Leer menos

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High pressure

Solid

Silcon

Clathrates

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High-pressure synthesis at the origin of new developments in silicon clathrate physical chemistry

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