Elasticity of cobalt at high pressure studied by inelastic X-ray scattering

The five independent elastic moduli of single-crystalline hcp cobalt were determined by inelastic x-ray scattering to 39 GPa and compared to ultrasonic measurements and first principles calculations. In general the agreement is good, in particular, for the evolution of the longitudinal sound velocit...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2004-11, Vol.93 (21), p.215505.1-215505.4, Article 215505
Main Authors: ANTONANGELI, D, KRISCH, M, FIQUET, G, FARBER, D. L, ARACNE, C. M, BADRO, J, OCCELLI, F, REQUARDT, H
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Elasticity, elastic constants
Exact sciences and technology
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
Mechanics
Physics
Solid mechanics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The five independent elastic moduli of single-crystalline hcp cobalt were determined by inelastic x-ray scattering to 39 GPa and compared to ultrasonic measurements and first principles calculations. In general the agreement is good, in particular, for the evolution of the longitudinal sound velocity in the a-c plane. This confirms the calculations, suggesting that a similar evolution is valid for hcp iron, the main constituent of the Earth's inner core, up to the highest investigated pressure. Our results represent an important benchmark to further refine ab initio calculations.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.93.215505