Dynamic stability of fcc crystals under isotropic loading from first principles

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F12%3APU97618" target="_blank" >RIV/00216305:26620/12:PU97618 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Dynamic stability of fcc crystals under isotropic loading from first principles

Original language description

Lattice dynamics and stability of four fcc crystals (Al, Ir, Pt, and Au) under isotropic (hydrostatic) tensile loading is studied from first principles using the linear response method and the harmonic approximation. The results reveal that, contrary toformer expectations, strengths of all the studied crystals are limited by instabilities related to soft phonons with finite or vanishing wave vectors. The critical strains associated with such instabilities are remarkably lower than those related to thevolumetric instability. On the other hand, the corresponding reduction of the tensile strength is by 20% at the most. An analysis of elastic stability conditions is also performed and the results obtained by means of both approaches are compared.

Czech name

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Czech description

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Type

J_x - 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)<br>S - Specificky vyzkum na vysokych skolach

Publication year

2012

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Physics: Condensed Matter

ISSN

0953-8984

e-ISSN

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Volume of the periodical

24

Issue of the periodical within the volume

21

Country of publishing house

GB - UNITED KINGDOM

Number of pages

7

Pages from-to

215403-215403

UT code for WoS article

000303985800010

EID of the result in the Scopus database

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