INNOLEC Lecture: Peter Rogl

Department of Plasma Physics and Technology and CEPLANT Center cordially invites you to a INNOLEC lecture from professor Peter Franz Rogl, a head of Christian Doppler Laboratory (CPL) for Thermoelectrics group at Institute of Materials Chemistry & Research at University of Vienna. 

Peter Rogl – Crystal Symmetry and X-ray Crystallography I.

1 Crystals, Lattices, Unit Cells, Atom Coordinates, Miller indices,
2 Symmetry in Solids (symmetry operations, Bravais lattices, crystal classes, HM symbols, space group types)
3 Choices of space group settings - structure tidy programme
4 Affine transformations, invariant points of transformation, properties of rotation axes, axes transformations , base transformations, invariance of symmetry operator transformations
5 Lage-vectors
6 groups of symmetry operations, coset decomposition, normal group, factor group, space group types.
7 Examples of space groups mm2, 4mm and others
8 calculation of point group coordinates for several space group types (group work)
9 X ray Crystallography (Bragg law, waves, Argand diagram, atom scattering factor, structure factor, the phase problem
10 Crystal Structure Analysis (Rietveld method, Rietveld refinement with some practical exercises),
11 Direct Methods (Harker Kasper inequalities, Sayres equation, Karle-Hauptmann determinant, sign probabilities
12 Example of a structure solution from a given data set
13 Description/Notation of crystal structures
14 How to construct a structure formula
15 Standardization of crystal structures – Typix​