Structure of liquid iron at pressures up to 58 GPa

被引：134

作者：

Shen, GY ^{[1
]}

Prakapenka, VB

Rivers, ML

Sutton, SR

机构：

[1] Univ Chicago, Consortium Adv Radiat Sources, Chicago, IL 60637 USA

[2] Univ Chicago, Dept Geophys Sci, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW LETTERS | 2004年 / 92卷 / 18期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.92.185701

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report structural data on liquid iron at pressures up to 58 GPa measured by x-ray scattering in a laser heated diamond anvil cell. The determined structure factor preserves essentially the same shape along the melting curve. Our data demonstrate that liquid iron at high pressures is a close-packed hard-sphere liquid. The results place important constraints on the thermodynamic and transport properties of liquid iron and the melting curve of iron.

引用

页码：185701 / 1

页数：4

共 39 条

[1] Structure and dynamics of liquid iron under Earth's core conditions [J].

Alfè, D ;

Kresse, G ;

Gillan, MJ .

PHYSICAL REVIEW B, 2000, 61 (01) :132-142

[2] Iron under Earth's core conditions:: Liquid-state thermodynamics and high-pressure melting curve from ab initio calculations -: art. no. 165118 [J].

Alfè, D ;

Price, GD ;

Gillan, MJ .

PHYSICAL REVIEW B, 2002, 65 (16) :1-11

[3] Calculated melting curves for phases of iron [J].

Anderson, OL ;

Isaak, DG .

AMERICAN MINERALOGIST, 2000, 85 (02) :376-385

[4] STRUCTURE AND RESISTIVITY OF LIQUID METALS [J].

ASHCROFT, NW ;

LEKNER, J .

PHYSICAL REVIEW, 1966, 145 (01) :83-&

[5] WHAT IS LIQUID - UNDERSTANDING STATES OF MATTER [J].

BARKER, JA ;

HENDERSON, D .

REVIEWS OF MODERN PHYSICS, 1976, 48 (04) :587-671

[6] Quasi -: Ab initio molecular dynamic study of Fe melting [J].

Belonoshko, AB ;

Ahuja, R ;

Johansson, B .

PHYSICAL REVIEW LETTERS, 2000, 84 (16) :3638-3641

[7] Melting of LiF and NaCl to 1 Mbar: Systematics of ionic solids at extreme conditions [J].

Boehler, R ;

Ross, M ;

Boercker, DB .

PHYSICAL REVIEW LETTERS, 1997, 78 (24) :4589-4592

[8] TEMPERATURES IN THE EARTHS CORE FROM MELTING-POINT MEASUREMENTS OF IRON AT HIGH STATIC PRESSURES [J].

BOEHLER, R .

NATURE, 1993, 363 (6429) :534-536

[9]

Brazhkin V. V., 2000, Physics-Uspekhi, V43, P493, DOI 10.1070/PU2000v043n05ABEH000682

[10] PHASE-TRANSITIONS, GRUNEISEN-PARAMETER, AND ELASTICITY FOR SHOCKED IRON BETWEEN 77-GPA AND 400-GPA [J].

BROWN, JM ;

MCQUEEN, RG .

JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH AND PLANETS, 1986, 91 (B7) :7485-7494

← 1 2 3 4 →