Stability and strength of covalent crystals under uniaxial and triaxial loading from first principles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F13%3APU100855" target="_blank" >RIV/00216305:26620/13:PU100855 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1088/0953-8984/25/3/035401" target="_blank" >http://dx.doi.org/10.1088/0953-8984/25/3/035401</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/0953-8984/25/3/035401" target="_blank" >10.1088/0953-8984/25/3/035401</a>

Result language
angličtina
Original language name
Stability and strength of covalent crystals under uniaxial and triaxial loading from first principles
Original language description
Response of three covalent crystals with a diamond lattice (C, Si and Ge) to uniaxial and a special triaxial (generally nonhydrostatic) loading is calculated from first principles. The lattice deformations are described in terms of variations of bond lengths and angles. The triaxial stress state is simulated as a superposition of axial tension or compression and transverse (both tensile and compressive) biaxial stresses. The biaxial stresses are considered to be adjustable parameters and the theoreticalstrengths in tension and compression along <100>, <110>, <111> crystallographic directions are calculated as their functions. The obtained results revealed that the compressive strengths are, consistently to fcc metals, almost linear functions of the transverse stresses. Tensile transverse stresses lower the compressive strength and vice versa. The tensile strengths, however, are not monotonic functions of the transverse biaxial stresses since they mostly exhibit maxima for certain valu
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2013
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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