Accessible Requires Authentication Published by Oldenbourg Wissenschaftsverlag December 10, 2012

Aberration-corrected and energy-filtered precession electron diffraction

Alexander S. Eggeman, Jonathan S. Barnard and Paul A. Midgley
From the journal

Abstract

We report initial findings on improvements to precession electron diffraction (PED) achieved through aberration correction of the probe-forming lens and by energy-filtering. Using current-generation aberration correctors, we show that PED patterns can, in principle, be acquired with sub-nm spatial resolution. We present initial experimental results that illustrate aberration-corrected PED of nanostructured alloys. We show also that zero loss energy filtering minimizes the inelastic background in a PED pattern, important for weak reflections, and leads to an improvement in the refinement of a crystal structure using elastic-only intensities.


* Correspondence address: University of Cambridge, Department of Materials Science and Metallurgy, Pembroke Street, CB2 3QZ Cambridge,

Published Online: 2012-12-10
Published in Print: 2013-01

© by Oldenbourg Wissenschaftsverlag, München, Germany