Shear-induced structural transformation and plasticity in ultraincompressible ReB2 limit its hardness

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F10%3A00349766" target="_blank" >RIV/68081723:_____/10:00349766 - 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

Shear-induced structural transformation and plasticity in ultraincompressible ReB2 limit its hardness

Original language description

The recent search for superhard materials concentrated on diborides of the 5d transition metals because of their high elastic moduli. Using density-functional theory we report a systematic study of the shear-induced irreversible structural transformations and plasticity in ReB2 which limits its strength and hardness. The plasticity is due to breaking and rearrangement of bonds accompanied by crystal-field splitting of 5d orbitals from the stabilized to destabilized states during the finite shear that takes place at the atomic level in plastic deformation. Such effects are expected to occur also in diborides of other 5d transition metals.

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

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2010

Confidentiality

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

Name of the periodical

Physical Review. B

ISSN

1098-0121

e-ISSN

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Volume of the periodical

82

Issue of the periodical within the volume

10

Country of publishing house

US - UNITED STATES

Number of pages

7

Pages from-to

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UT code for WoS article

000281650900001

EID of the result in the Scopus database

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