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Atomic structure and lattice defects in nanolaminated ternary transition metal borides
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.
Drexel University, PA 19104 USA.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering. Drexel University, PA 19104 USA.
Linköping University, Department of Physics, Chemistry and Biology, Thin Film Physics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-2837-3656
2017 (English)In: MATERIALS RESEARCH LETTERS, ISSN 2166-3831, Vol. 5, no 4, p. 235-241Article in journal (Refereed) Published
Abstract [en]

We use analytical aberration-corrected high-resolution scanning transmission electron microscopy to image the atomic structure of the layered ternary transition metal (M) borides, Cr2AlB2, Fe2AlB2, and MoAlB. In these ternaries, MB layers and Al single or double atomic layers are interleaved. The atomic positions of the M elements and Al are clearly resolved by Z-contrast images. The following structural defects are also found and described herein: a 90 degrees twist boundary along [010] in Cr2AlB2, a tilt boundary in Fe2AlB2, and Mo2AlB2-like stacking faults in MoAlB, where some of the MB-based structures are intercalated by one (instead of two) Al layer(s).

Place, publisher, year, edition, pages
TAYLOR & FRANCIS INC , 2017. Vol. 5, no 4, p. 235-241
Keywords [en]
Nanolaminated ternary transition metal borides; STEM Z-contrast images; EDX; crystal structure; defects
National Category
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-139649DOI: 10.1080/21663831.2016.1245682ISI: 000405591300002OAI: oai:DiVA.org:liu-139649DiVA, id: diva2:1133687
Note

Funding Agencies|Swedish Research Council; Knut and Alice Wallenberg Foundation [KAW 2008-0058, KAW 2011-0143, KAW 2015.0043]; Leverhulme Trust; Army Research Office [W911NF-11-1-0525]

Available from: 2017-08-16 Created: 2017-08-16 Last updated: 2017-09-05

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Lu, JunBarsoum, MichelHultman, Lars
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