Quasihydrostatic equation of state of iron above 2 Mbar

被引：368

作者：

Dewaele, Agnes

Loubeyre, Paul

Occelli, Florent

Mezouar, Mohamed

Dorogokupets, Peter I.

Torrent, Marc

机构：

[1] CEA, DIF, Dept Phys Theor & Appl, F-91680 Bruyeres Le Chatel, France

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

[3] RAS, SB, Inst Earth Crust, Irkutsk 664033, Russia

来源：

PHYSICAL REVIEW LETTERS | 2006年 / 97卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.97.215504

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The compression curve of iron is measured up to 205 GPa at 298 K, under quasihydrostatic conditions in a diamond anvil cell. Above 150 GPa, the compression of this metal is significantly higher than previously measured under nonhydrostatic conditions. The same compression curve is also calculated ab initio and the deviation between experiment and theory is clearly established. A formulation of the equation of state of iron over a large pressure and temperature range, based on the current data and existing shock-wave data, is also proposed. Implications for the Earth's core are discussed.

引用

页数：4

共 34 条

[1] Thermodynamics of hexagonal-close-packed iron under Earth's core conditions -: art. no. 045123 [J].