UCL logo

UCL Discovery

UCL home » Library Services » Electronic resources » UCL Discovery

Bragg projection ptychography on niobium phase domains

Burdet, N; Shi, X; Clark, JN; Huang, X; Harder, R; Robinson, I; (2017) Bragg projection ptychography on niobium phase domains. Physical Review B , 96 (1) , Article 014109. 10.1103/PhysRevB.96.014109. Green open access

[img]
Preview
Text
Burdet_Bragg_projection_ptychography.pdf - ["content_typename_Published version" not defined]

Download (2MB) | Preview

Abstract

Bragg projection ptychography (BPP) is a coherent x-ray diffraction imaging technique which combines the strengths of scanning microscopy with the phase contrast of x-ray ptychography. Here we apply it for high resolution imaging of the phase-shifted crystalline domains associated with epitaxial growth. The advantages of BPP are that the spatial extent of the sample is arbitrary, it is nondestructive, and it gives potentially diffraction limited spatial resolution. Here we demonstrate the application of BPP for revealing the domain structure caused by epitaxial misfit in a nanostructured metallic thin film. Experimental coherent diffraction data were collected from a niobium thin film, epitaxially grown on a sapphire substrate as the beam was scanned across the sample. The data were analyzed by BPP using a carefully selected combination of refinement procedures. The resulting image shows a close packed array of epitaxial domains, shifted with respect to each other due to misfit between the film and its substrate.

Type: Article
Title: Bragg projection ptychography on niobium phase domains
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevB.96.014109
Publisher version: https://doi.org/10.1103/PhysRevB.96.014109
Language: English
Additional information: This is the published version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology
URI: http://discovery.ucl.ac.uk/id/eprint/1567682
Downloads since deposit
65Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item