Journal of Materials Science

, Volume 41, Issue 14, pp 4394–4404 | Cite as

Quantitative EFTEM measurement of the composition of embedded particles

  • S. Lozano-PerezEmail author
  • J. M. Titchmarsh
  • M. L. Jenkins


The optimisation of parameters is investigated for the compositional analysis of nanometre-sized particles embedded in a matrix by energy-filtered transmission electron microscopy. The specific example of Cu-rich particles in a Fe matrix is used both to model and to explore the experimental limits of detection and characterisation. Modelling of alternative procedures for background extrapolation as a function of the number of pre-edge windows confirmed that greater accuracy in a fixed analysis time is achieved by using more than two pre-edge windows. Further modelling investigated the effects of noise, drift and instrumental blurring of images on the accuracy of particle size and composition measurements. Correction factors were generated for ranges of these artefact amplitudes. The corrections were then applied to experimental data and shown to be both realistic and effective. Determination of particle radius below 1 nm was demonstrated.


Total Acquisition Time Data Acquisition Time Average Pixel Intensity Ionisation Edge Drift Amplitude 



We thank the EPSRC, Rolls Royce and the Institute of Nuclear Safety System (INSS), Japan, for support for this work. JMT was further supported by the Royal Academy of Engineering, BNFL and INSS.


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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • S. Lozano-Perez
    • 1
    Email author
  • J. M. Titchmarsh
    • 1
  • M. L. Jenkins
    • 1
  1. 1.Department of MaterialsUniversity of OxfordOxford UK

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