Structural study of SnO at high pressure

被引：26

作者：

Giefers, H ^{[1
]}

Porsch, F

Wortmann, G

机构：

[1] Univ Nevada, Dept Phys, Las Vegas, NV 89154 USA

[2] Univ Gesamthsch Paderborn, Dept Phys, D-33095 Paderborn, Germany

[3] Univ Bonn, Mineral Petr Inst, D-53115 Bonn, Germany

来源：

PHYSICA B-CONDENSED MATTER | 2006年 / 373卷 / 01期

关键词：

tin monoxide; high pressure; x-ray powder diffraction; equation of state;

D O I：

10.1016/j.physb.2005.10.136

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the structural behaviour of tin monoxide (SnO) by energy dispersive X-ray diffraction (EDXRD) and EXAFS in a pressure range up to 51 GPa. We found a shear stress induced phase transition to an orthorhombically distorted structure under non hydrostatic conditions. Besides this we observed no phase transition of SnO up to the highest pressure of this study. SnO shows strong anisotropy in compression. The a-axis is rather incompressible with a linear stiffness coefficient of K-a0 = 306(6) GPa whereas the stiffness of the c-axis is K-c0 = 43(2) GPa. The bulk modulus of SnO is K-0 = 35(1) GPa and its derivative K'(0) = 6.1(2). A possible disproportionation of SnO to SnO2 and Sn at ambient temperature under high pressure is also discussed. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：76 / 81

页数：6

共 18 条

[1] 2ND-ORDER PHASE-TRANSITION IN PBO AND SNO AT HIGH-PRESSURE - IMPLICATIONS FOR THE LITHARGE-MASSICOT PHASE-TRANSFORMATION [J].