Study of laser heated iron using third generation synchrotron X-ray radiation facility with imaging plate at high pressures

被引：13

作者：

Dubrovinsky, LS

Lazor, P

Saxena, SK ^{[1
]}

Häggkvist, P

Weber, HP

Le Bihan, T

Hausermann, D

机构：

[1] Uppsala Univ, Inst Earth Sci, S-75236 Uppsala, Sweden

[2] Univ Lausanne, Sect Phys, CH-1015 Lausanne, Switzerland

[3] European Synchrotron Radiat Facil, F-38043 Grenoble, France

来源：

PHYSICS AND CHEMISTRY OF MINERALS | 1999年 / 26卷 / 07期

关键词：

iron; high pressure and temperature; phase transition; stress;

D O I：

10.1007/s002690050217

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Iron pressurized to 60 gigapascal (GPa) was heated with laser up to temperatures of over 2200 K. The structural changes were determined in-situ using third generation synchrotron X-ray source; the changes were recorded on an imaging plate with a monochromatic beam. The results strongly support the existence of a phase transformation of the hexagonal close-packed (hcp) structure to the new polymorph (beta-phase of iron) at high pressure and temperature. We interpret the X-ray data as belonging to the double hexagonal close-packed (dhcp) structure distorted by stress due to laser heating.

引用

页码：539 / 545

页数：7

共 32 条

[1] High pressure geophysics - Iron: Beta phase frays [J].