Počet záznamů: 1
STEM Optical Sectioning for Imaging Screw Dislocations Core Structures\nin BCC Metals
- 1.
SYSNO ASEP 0481153 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název STEM Optical Sectioning for Imaging Screw Dislocations Core Structures
in BCC MetalsTvůrce(i) Hernandez-Maldonado, D. (GB)
Yang, H. (US)
Jones, L. (GB)
Gröger, Roman (UFM-A) RID, ORCID
Hirsch, P. B. (GB)
Ramasse, Q. M. (GB)
Nellist, P. D. (GB)Celkový počet autorů 7 Zdroj.dok. Microscopy and Microanalysis. - : Cambridge University Press - ISSN 1431-9276
Roč. 22, S3 (2016), s. 1932-1933Poč.str. 2 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova screw dislocation ; transmission electron microscopy ; imaging Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Condensed matter physics (including formerly solid state physics, supercond.) CEP GA16-13797S GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 DOI 10.1017/S1431927616010503 Anotace It is well known that the low-temperature plastic deformation of Body-Centred Cubic (BCC)
metals is controlled by the glide of 1/2[111] screw dislocations. Their low mobility is caused
by the delocalized nature of their cores which are extended into several planes in the zone
of the Burgers vector. This non-planar core spreading has been demonstrated by a number of
atomistic studies made in the last 46 years. However, attempts at experimental
observation have been hindered by the Eshelby twist effect. The aim of this work is to
investigate whether the edge and screw displacements associated with 1/2[111] screw
dislocations in BCC metals can be detected by optical sectioning in high-angle annular dark field
(HAADF) Scanning Transmission Electron Microscope (STEM) imaging conditions.Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2019
Počet záznamů: 1