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Primitive unit cell volumes obtained from unindexed convergent-beam electron diffraction patterns

✍ Scribed by Le Page, Y. ;Downham, David A.

Publisher: Wiley (John Wiley & Sons)
Year: 1991
Tongue: English
Weight: 348 KB
Volume: 18
Category: Article
ISSN: 0741-0581
DOI: 10.1002/jemt.1060180413

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✦ Synopsis

Provided that multiple reflection is present, a common occurrence with electron diffraction on microcrystallites, a single unindexed convergent-beam electron diffraction (CBED) pattern taken with the beam axis parallel to any direct lattice row allows the volume of the primitive cell to be calculated. The film measurements required are the diameters of the successive high-order Laue zones (HOLZ), the lengths of any two coprime vectors in the zero-order Laue zone (ZOLZ), and the angle between them. The primitive cell volume is an objective criterion allowing in a simplification in the identification of a phase under study by rapidly eliminating other possible phases. The computer program CELVOL for the calculation of the primitive cell volume from film measurements, or from literature cells, is available from the authors.

📜 SIMILAR VOLUMES

Ab-initio primitive cell parameters from

Ab-initio primitive cell parameters from single convergent-beam electron diffraction patterns: A converse route to the identification of microcrystals with electrons

✍ Y. Le Page 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 826 KB

A new method for the ab initio derivation of Buerger-reduced primitive cell parameters from coordinate measurements of spots on single convergent-beam electron diffraction (CBED) patterns is described, which does not involve trial-and-error. The pattern can be taken along any zone axis, and misorien