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TEMUC3, a computer program for unit-cell determination of crystalline phases in TEM experiments.

X-Z Li1

  • 1Nebraska Center for Materials and Nanoscience, University of Nebraska, Lincoln, NE, 68588, United States.

Micron (Oxford, England : 1993)
|November 9, 2018
PubMed
Summary

A new software program, TEMUC3, aids in determining crystal unit cells from electron diffraction data. It reconstructs reciprocal lattices and refines unit cells, simplifying crystallographic analysis.

Keywords:
Computer softwareElectron diffractionLattice reconstructionNiggli cellUnit-cell refinement

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Area of Science:

  • Crystallography
  • Materials Science
  • Electron Microscopy

Background:

  • Accurate unit-cell determination is crucial for understanding crystal structures.
  • Analyzing electron diffraction data for unit-cell determination can be complex and computationally intensive.

Purpose of the Study:

  • To introduce TEMUC3, a user-friendly computer program for unit-cell determination using electron diffraction data.
  • To streamline the process of crystal phase identification and structural analysis.

Main Methods:

  • Reconstruction of the reciprocal lattice from electron diffraction pattern tilt series.
  • Generation of Niggli cells from two or three electron diffraction patterns.
  • Conversion of Niggli cells to conventional unit cells.
  • Refinement of unit cells using reflection data.

Main Results:

  • TEMUC3 successfully reconstructs reciprocal lattices and determines unit cells.
  • The program facilitates Niggli cell generation and refinement from electron diffraction data.
  • Demonstrated application of TEMUC3 through three distinct examples.

Conclusions:

  • TEMUC3 provides an efficient and accessible tool for unit-cell determination in crystallography.
  • The software simplifies complex crystallographic computations, aiding researchers in materials science.
  • Further discussion on primitive cell generation and cell reduction is included.