High-pressure behavior of CdSb: Compound decomposition, phase formation, and amorphization

被引：7

作者：

Degtyareva, Valentina F. ^{[1
]}

Degtyareva, Olga

Mao, Ho-kwang

Hemley, Russell J.

机构：

[1] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Russia

[2] Carnegie Inst Sci, Geophys Lab, Washington, DC 20015 USA

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.73.214108

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

High pressure study of the binary CdSb compound reveal several phase transitions including compound decomposition, phase formation, and amorphization on decompression. Above 7.3 GPa a simple hexagonal (sh) phase of composition Cd44Sb56 and an excess of pure Cd are observed. Above 20 GPa after heating at 423 K, the material decomposes into nearly pure components, hcp-Cd and Sb-II. Above 40 GPa, a bcc phase (solid solution of Cd in bcc-Sb) is observed together with an additional intermediate phase. Amorphization of CdSb occurs on decompression after decomposition into the sh phase and Cd. Structural properties of the amorphous phase in the Cd-Sb system are compared with those of the known amorphous semiconductors and discussed in terms of Fermi sphere-Brillouin zone interactions.

引用

页数：8

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