Electrostatic charging artefacts in Lorentz electron tomography of MFM tip stray fields

Scott, J. , McVitie, S. , Ferrier, R.P. and Gallagher, A. (2001) Electrostatic charging artefacts in Lorentz electron tomography of MFM tip stray fields. Journal of Physics D: Applied Physics, 34(9), 1326 -1332. (doi:10.1088/0022-3727/34/9/307)

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Abstract

Using the technique of differential phase contrast (DPC) Lorentz electron microscopy, the magnetic stray field distribution from magnetic force microscopy (MFM) tips can be calculated in a plane in front of the tip using tomographic reconstruction techniques. Electrostatic charging of the tip during DPC imaging can significantly distort these field reconstructions. Using a simple point charge model, this paper illustrates the effect of electrostatic charging of the sample on the accuracy of tomographic field reconstructions. A procedure for separating electrostatic and magnetic effects is described, and is demonstrated using experimental tomographic data obtained from a modified MFM tip.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:McVitie, Professor Stephen and Scott, Dr Jamie and Ferrier, Prof Robert
Authors: Scott, J., McVitie, S., Ferrier, R.P., and Gallagher, A.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Solid State Physics
Journal Name:Journal of Physics D: Applied Physics
Publisher:Institute of Physics
ISSN:0022-3727
ISSN (Online):1361-6463
Copyright Holders:Copyright © 2001 Institute of Physics
First Published:First published in Journal of Physics D: Applied Physics 34(9):1326-1332
Publisher Policy:Reproduced in accordance with the copyright policy of the publisher

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
211741MFM TIP CHARACTERISATION USING NOVEL COATINGS, STANDARD SAMPLES, ELECTRON TOMOGRPAHY AND MICROMAGNETIC MODELSStephen McVitieEngineering & Physical Sciences Research Council (EPSRC)GR/L42896Physics and Astronomy