Aberration corrected Lorentz scanning transmission electron microscopy

S McVitie; D McGrouther; S McFadzean; D A MacLaren; K J O'Shea; M J Benitez

doi:10.1016/j.ultramic.2015.01.003

Aberration corrected Lorentz scanning transmission electron microscopy

Ultramicroscopy. 2015 May:152:57-62. doi: 10.1016/j.ultramic.2015.01.003. Epub 2015 Feb 3.

Authors

S McVitie¹, D McGrouther², S McFadzean², D A MacLaren², K J O'Shea², M J Benitez²

Affiliations

¹ Scottish Universities Physics Alliance, School of Physics and Astronomy, University of Glasgow, Glasgow, Glasgow G12 8QQ, UK. Electronic address: stephen.mcvitie@glasgow.ac.uk.
² Scottish Universities Physics Alliance, School of Physics and Astronomy, University of Glasgow, Glasgow, Glasgow G12 8QQ, UK.

PMID: 25677688
DOI: 10.1016/j.ultramic.2015.01.003

Abstract

We present results from an aberration corrected scanning transmission electron microscope which has been customised for high resolution quantitative Lorentz microscopy with the sample located in a magnetic field free or low field environment. We discuss the innovations in microscope instrumentation and additional hardware that underpin the imaging improvements in resolution and detection with a focus on developments in differential phase contrast microscopy. Examples from materials possessing nanometre scale variations in magnetisation illustrate the potential for aberration corrected Lorentz imaging as a tool to further our understanding of magnetism on this lengthscale.

Keywords: Aberration correction; Differential phase contrast; Lorentz microscopy; Magnetic thin films.

Publication types

Research Support, Non-U.S. Gov't