Elasticity of hexagonal-closed-packed cobalt at high pressure and temperature: A quasiharmonic case

被引：30

作者：

Antonangeli, Daniele ^{[1
]}

Krisch, Michael ^{[2
]}

Farber, Daniel L. ^{[1
]}

Ruddle, David G. ^{[1
]}

Fiquet, Guillaume ^{[3
,4
]}

机构：

[1] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

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

[3] Univ Paris 06, Inst Minerol & Phys Milieux Condenses, UMR CNRS 7590, Inst Phys Globe Paris, F-75005 Paris, France

[4] Univ Paris 07, F-75005 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.100.085501

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We performed high-resolution inelastic x-ray scattering measurements on a single crystal of hcp cobalt at simultaneous high pressure and high temperature, obtaining 4 of the 5 independent elements of the elastic tensor. Our experiments indicate that the elasticity of hcp-Co is well described within the quasiharmonic approximation and that anharmonic high-temperature effects on the elastic moduli, sound velocities, and elastic anisotropy are minimal at constant density. These results support the validity of Birch's law and represent an important benchmark for ab initio thermal lattice dynamics and molecular-dynamics simulations.

引用

页数：4

共 34 条

[11] High-pressure and high-temperature in situ X-ray diffraction study of iron and corundum to 68 GPa using an internally heated diamond anvil cell [J].

Dubrovinsky, LS ;

Saxena, SK ;

Lazor, P .

PHYSICS AND CHEMISTRY OF MINERALS, 1998, 25 (06) :434-441

[12] Gruneisen parameter of ε-iron up to 300 GPa from in-situ X-ray study [J].

Dubrovinsky, LS ;

Saxena, SK ;

Dubrovinskaia, NA ;

Rekhi, S ;

le Bihan, T .

AMERICAN MINERALOGIST, 2000, 85 (02) :386-389

[13] THERMAL-EXPANSION OF MANTLE AND CORE MATERIALS AT VERY HIGH-PRESSURES [J].

DUFFY, TS ;

AHRENS, TJ .

GEOPHYSICAL RESEARCH LETTERS, 1993, 20 (11) :1103-1106

[14] Preparation and characterization of single crystal samples for high-pressure experiments [J].

Farber, D. L. ;

Antonangeli, D. ;

Aracne, C. M. ;

Benterou, J. .

HIGH PRESSURE RESEARCH, 2006, 26 (01) :1-10

[15] Lattice dynamics of molybdenum at high pressure [J].

Farber, DL ;

Krisch, M ;

Antonangeli, D ;

Beraud, A ;

Badro, J ;

Occelli, F ;

Orlikowski, D .

PHYSICAL REVIEW LETTERS, 2006, 96 (11)

[16] Sound velocities in iron to 110 gigapascals [J].

Fiquet, G ;

Badro, J ;

Guyot, F ;

Requardt, H ;

Krisch, M .

SCIENCE, 2001, 291 (5503) :468-471

[17]

FIQUET G, COMMUNICATION

[18] High-pressure and high-temperature in situ x-ray diffraction study of iron to above 30 GPa using MA8-type apparatus [J].

Funamori, N ;

Yagi, T ;

Uchida, T .

GEOPHYSICAL RESEARCH LETTERS, 1996, 23 (09) :953-956

[19] The particle-in-cell model for ab initio thermodynamics:: implications for the elastic anisotropy of the Earth's inner core [J].

Gannarelli, CMS ;

Alfè, D ;

Gillan, MJ .

PHYSICS OF THE EARTH AND PLANETARY INTERIORS, 2003, 139 (3-4) :243-253

[20] PRESSURE AND TEMPERATURE DERIVATIVES OF ISOTROPIC POLYCRYSTALLINE SHEAR MODULUS FOR 65 ELEMENTS [J].

GUINAN, MW ;

STEINBERG, DJ .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1974, 35 (11) :1501-1512

← 1 2 3 4 →