High-Pressure Synthesis of a New Silicon Clathrate Superconductor, Ba8Si46
- 17 December 1999
- journal article
- research article
- Published by American Chemical Society (ACS) in Inorganic Chemistry
- Vol. 39 (1) , 56-58
- https://doi.org/10.1021/ic990778p
Abstract
A new silicon clathrate compound with a composition of Ba8Si46 was prepared under high-pressure and high-temperature conditions. The compound was isomorphous with Na8Si46 and became a superconductor with a transition temperature of 8.0 K. Barium atoms occupy all of the Si20 and Si24 cages of the clathrate structure. This is the first clathrate superconductor obtained as a bulk phase.Keywords
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