Formation of transition metal hydrides at high pressures

被引：95

作者：

Degtyareva, Olga ^{[1
,2
]}

Proctor, John E. ^{[1
,2
]}

Guillaume, Christophe L. ^{[1
,2
]}

Gregoryanz, Eugene ^{[1
,2
]}

Hanfland, Michael ^{[3
]}

机构：

[1] Univ Edinburgh, Sch Phys, Edinburgh EH9 3JZ, Midlothian, Scotland

[2] Univ Edinburgh, Ctr Sci Extreme Condit, Edinburgh EH9 3JZ, Midlothian, Scotland

[3] ESRF, Grenoble, France

来源：

SOLID STATE COMMUNICATIONS | 2009年 / 149卷 / 39-40期

基金：

英国工程与自然科学研究理事会;

关键词：

Metals; Synthesis; High pressure; Synchrotron x-ray diffraction; RHENIUM HYDRIDE; HYDROGEN; SUPERCONDUCTIVITY; NITRIDE; SILANE;

D O I：

10.1016/j.ssc.2009.07.022

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Silane (SiH4) is found to (partially) decompose at pressures above 50 GPa at room temperature into pure Si and H-2. The released hydrogen reacts with surrounding metals in the diamond anvil cell to form metal hydrides. A formation of rhenium hydride is observed after the decomposition of silane and reaction of hydrogen with Re gasket. From the data of a previous experimental report [M.I. Eremets, I.A. Trojan, S.A. Medvedev, J.S. Tse, Y. Yao, Science 319 (2008) 1506], the claimed high-pressure metallic and superconducting phase of silane is identified as platinum hydride, that forms after the decomposition of silane. These observations show the importance of taking into account possible chemical reactions that are often neglected in high-pressure experiments. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1583 / 1586

页数：4

共 36 条

[11] HCP-TO-FCC TRANSITION IN SILICON AT 78-GPA AND STUDIES TO 100-GPA [J].