新型笼形硅化物超导体Ba8Si46的高压合成
High-pressure synthesis of a new silicon clathrate superconductor, Ba8Si46.
作者信息
Yamanaka S, Enishi E, Fukuoka H, Yasukawa M
机构信息
Department of Applied Chemistry, Faculty of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan.
出版信息
Inorg Chem. 2000 Jan 10;39(1):56-8. doi: 10.1021/ic990778p.
PMID:11229033
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.
摘要
一种组成为Ba8Si46的新型硅包合物在高压高温条件下制备而成。该化合物与Na8Si46同构，且成为了一种转变温度为8.0 K的超导体。钡原子占据了包合物结构中所有的Si20和Si24笼。这是首个以体相形式获得的包合物超导体。
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