Volume 96, Number 6, December 2011
|Number of page(s)||5|
|Section||Condensed Matter: Structural, Mechanical and Thermal Properties|
|Published online||05 December 2011|
Stress tensor: A quantitative indicator of effective volume and stability of helium in metals
Department of Physics, Beihang University - Beijing 100191, China
2 Department of Materials Science and Engineering, University of Utah - Salt Lake City, UT 84112, USA
Accepted: 25 October 2011
We demonstrate a quantitative stress indicator as well as a qualitative hard-sphere lattice model to characterize the effective volume and stability of interstitial helium in fcc and bcc metals, based on extensive first-principles total-energy and lattice stress calculations in combination with continuum elastic theory analyses. The concept of stress indicator is believed to be generally applicable to quantify the relative stability of other inert gas elements in metals.
PACS: 61.72.jj – Interstitials / 61.82.Bg – Metals and alloys / 71.15.Mb – Density functional theory, local density approximation, gradient and other corrections
© EPLA, 2011
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.