Issue 36, 2021

Imaging defects in vanadium(iii) oxide nanocrystals using Bragg coherent diffractive imaging

Abstract

Defects in strongly correlated materials such as V2O3 play influential roles on their electrical properties. Understanding the defects' structure is of paramount importance. In this project, we investigate defect structures in V2O3 grown via a flux method. We use AFM to see surface features in several large flake-like particles that exhibit characteristics of spiral growth. We also use Bragg coherent diffractive imaging (BCDI) to probe in 3 dimensions a smaller particle without flake-like morphology and note an absence of the pure screw dislocation characteristic of spiral growth. We identified and measured several defects by comparing the observed local displacement of the crystal, measured via BCDI to well-known models of the displacement around defects in the crystal. We identified two Image ID:d1ce00736j-t1.gif partial dislocations in the crystal. We discuss how defects of different types influence the morphology of V2O3 crystals grown via a flux method.

Graphical abstract: Imaging defects in vanadium(iii) oxide nanocrystals using Bragg coherent diffractive imaging

Article information

Article type
Paper
Submitted
03 6 2021
Accepted
13 7 2021
First published
13 7 2021

CrystEngComm, 2021,23, 6239-6244

Author version available

Imaging defects in vanadium(III) oxide nanocrystals using Bragg coherent diffractive imaging

Z. Barringer, J. Jiang, X. Shi, E. Schold, A. Pateras, S. Cipiccia, C. Rau, J. Shi and E. Fohtung, CrystEngComm, 2021, 23, 6239 DOI: 10.1039/D1CE00736J

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