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Phase Microidentification from Selected Area Electron Diffraction (SAED) and Energy Dispersive Spectroscopy (EDS) Data

Published online by Cambridge University Press:  06 March 2019

Josef Macicek*
Affiliation:
Institute of Applied Mineralogy Bulgarian Academy of Sciences Rakovski 92, 1000 Sofia, Bulgaria
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Abstract

Two-dimensional geometry information contained in SAED spot patterns augmented with EDS elemental data is employed in a computerized phase identification of microcrystalline particles. The initial chemistry screening of a laboratory managed database using the 'bitmap' concept is followed by a geometry search/match treating of the spot patterns as planar sections through the reciprocal lattice of a candidate phase. The identification is selective, fast, and yields to a complete automatization,

Type
IX. XRD Applications: Detection Levitts, Superconductors, Organics, Minerals
Copyright
Copyright © International Centre for Diffraction Data 1991

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References

1. Carr, M.J., Chambers, W.F., and Melgaard, D., A Search/Match Procedure for Electron Diffraction Data Based on Pattern Matching in Binary Bit Maps, Powder Diffraction, 1:226234 (1986).Google Scholar
2. Andrews, L.C., Bernstain, H.J., and Pelletier, G.A., A Perturbation Stable Cell Comparison Technique, Acta Cryst., A36:248252 (1980),Google Scholar
3. Himes, V.L., and Mighell, A.D., NBS Crystal Data, NBS*Search: A Program to Search the Database, “Crystallographic databases,” Data Commission of the TUCr, Chester (1987).Google Scholar
4. Mighell, A.D., and Himes, V.L., Compound Identification and Characterization Using Lattice-Formula Matching Techniques, Acta Cryst. A42:101105 (1986).Google Scholar
5. Jenkins, R., and Holomany, M., PC-PDF; A Search/Display/System Utilising the CD-ROM and the Complete Powder Diffraction File, Powder Diffraction, 2:215219 (1987),Google Scholar
6. Toby, B.H., Harlow, R.L., and Holomany, M.A., the Powder Suite: Computer Programs for Searching and Accessing the JCFDS-ICDD Powder Diffraction Database, Powder Diffraction, 5:27 (1990).Google Scholar
7. Carr, M.J., Chambers, W.F., Melgaard, D., Himes, V.L., Stalick, J.K., and Mighell, A.D., NIST/Sandia/ICDD Electron Diffraction Database; A Database for Phase Identification by Electron Diffraction, J. Res. NIST, 94:1520 (1989).Google Scholar
8. Carr, M.J., Chambers, W.F., Melgaard, D., Himes, V.L., Stalick, J.K., and Mighell, A.D., A Database for Phase Identification by Electron Diffraction, EKSA Bulletin, 3.9:7880 (1989).Google Scholar
9. Macicek, J., Computerized Electron Microscopy Phase Analysis of Single Crystals (In Bulgaria). Electron Microscopy and X-Ray Analysis in Material Science.” Scientific and Technical Conference, Albena 1922, 10. 1987, Abstracts, p. 10.Google Scholar
10. Fraundorf, P., Stereo Analysis of Single Crystal Electron Diffraction Data, Ultramicroscopy, 6:227236 (1981).Google Scholar
11. Rhoades, B.L., Indexing of Electron Diffraction Spot Patterns by Computer, Micron, 6:123127 (1975),Google Scholar
12. Edington, J.W., Practical Electron Microscopy in Material Science. 2, Electron Diffraction in the Electron Microscopy. MacMillan, Philips, Eindhoven, 122p. (1975).Google Scholar
13. Macicek, J., Unpublished results.Google Scholar