CHAPTER I: Crystal symmetry * Orientation symmetry, Euler theorem 32 punctual groups. Holoedric and Meriedric classes 14 Bravais lattices: mathematical and geometrical construction Particular case of trigonal and hexagonal lattices.
CHAPTER II Symmetry and Crystal properties * Crystal anisotropy Tensorial representation of physical properties: effect of symetries on tensors Application to optics, pyro- and piezo-electricity, elasticity
CHAPTER III Physical symmetry * Space orientation Polar and axial variables Anti-symmetry Magnetic properties Generalised symmetry principle Symmetry breakage Order-Disorder transitionTransition ordre-désordre Landau theory, order parameter
CHAPITRE IV Determination of Crystal structures * Position Symmetry Symmetries with translation : mathematical determination Space groups. Searching space groups from X-ray diffractograms. Use of "International Tables For X-ray Crystallography".
basic lecture on crystallography and X-ray diffraction