Evaluation of Aberration-corrected Optical Sectioning for Exploring the Core Structure of 1/2[111] Screw Dislocations in BCC Metals

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F17%3A00483111" target="_blank" >RIV/68081723:_____/17:00483111 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1017/S1431927617002847" target="_blank" >http://dx.doi.org/10.1017/S1431927617002847</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1017/S1431927617002847" target="_blank" >10.1017/S1431927617002847</a>

Result language

angličtina

Original language name

Evaluation of Aberration-corrected Optical Sectioning for Exploring the Core Structure of 1/2[111] Screw Dislocations in BCC Metals

Original language description

The introduction of spherical-aberration correctors in the Scanning Transmission Electron Microscopen(STEM) has allowed an improvement in spatial resolution to the sub-angström scale accompanied by anreduction of the depth of focus (due to the increase in probe convergence angles), which in a modernninstrument is just a few nanometers, thus often less than the sample thickness. This can be exploited tonextract information along the beam direction by focusing the electron probe at specific depths within thensample. In this communication we will evaluate the optical sectioning technique to explore the core structure ofn1/2[111] screw dislocations in body-centred cubic (BCC) metals. The study of this structure is of highninterest because the low-temperature plastic deformation of BCC metals is controlled by the glide ofn1/2[111] screw dislocations. The aim of this work is to investigate whether the edge and screw displacementsnassociated with 1/2[111] screw dislocations in BCC metals can be detected by optical sectioning in high-anglenannular dark field (HAADF) imaging in STEM conditions.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

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

2017

Confidentiality

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

Name of the periodical

Microscopy and Microanalysis

ISSN

1431-9276

e-ISSN

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Volume of the periodical

23

Issue of the periodical within the volume

1

Country of publishing house

US - UNITED STATES

Number of pages

2

Pages from-to

432-433

UT code for WoS article

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EID of the result in the Scopus database

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