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Use of Reciprocal Lattice Layer Spacing in Convergent Beam Electron Diffraction Analysis

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Abstract

Established analytical expressions for calculating the Reciprocal Lattice Layer spacing can be used to verify the layer spacing measured in Convergent Beam Electron Diffraction (CBD) Patterns. Within experimental error, the measured layer spacing compares well with the calculated spacing for primitive crystal systems. For crystal systems with higher symmetry, the measured and calculated spacings can differ by integral values due to systematic extinctions in non-zero Laue Zones. If the calculated and measured spacings differ by non-integral values, then the indexing of the zero layer pattern, and, consequently, the indices of the zone axis are in error. This analysis was found to be extremely useful in reducing the ambiguity which usually arises in indexing only the zero-layer diffraction zone.

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Authors and Affiliations

  1. Corporate Research Science Laboratories, Exxon Research & Engineering Company, Route 22 East, 08801, Annandale, NJ

    M. Raghavan (Research Associate) & J. C. Scanlon

  2. Department of Physics, University of Bristol, Tyndal Avenue, Bristol, UK

    J. W. Steeds

Authors
  1. M. Raghavan
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  2. J. C. Scanlon
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  3. J. W. Steeds
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Raghavan, M., Scanlon, J.C. & Steeds, J.W. Use of Reciprocal Lattice Layer Spacing in Convergent Beam Electron Diffraction Analysis. Metall Trans A 15, 1299–1302 (1984). https://doi.org/10.1007/BF02648557

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  • DOI: https://doi.org/10.1007/BF02648557

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