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Crystallography and crystal chemistry - 3PMMCRI9

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  • Number of hours

    • Lectures : 12.0
    • Tutorials : 12.0
    ECTS : 2.0

Goals

To give basic crystallography and crystal chemistry for solid state physics courses and characterization of materials.

Contact Estelle APPERT

Content

I - Basic geometrical crystallography (4h)

  • Ponctual lattice (lattice, pattern, unit cells, plane, Miller indexes)
  • Crystallographic directions and planes (atomic density), reticular distances
  • Symmetry operators in the crystal: plane and glide mirrors, rotation and screw axes, inversion center. Two- and three-dimensional space groups, point groups, Laüe groups.

II - Close packed structures and main structural types (3h)

  • Description of crystal structures , fcc, hc, bcc
  • Interstitial sites
  • Covalent structures (diamond), ionic structures (AX, AX2, ABX3, AB2X4 types)

III - Reciprocal lattice (2h)

  • Definition, Fondamental properties
  • Reciprocal lattice in different crystalline systems
  • Interreticular distances versus reciprocal parameters
  • Relations in between direct and reciprocal unit cell volumes

IV - X-ray diffraction (3h)

  • Nature and production of X-ray, X-ray spectrum, X-ray absorption
  • Bragg's law, Conditions of diffraction (Laüe equations, Ewald's sphere)
  • Diffracted intensity (atomic diffusion factor, structure factor, anomalous diffusion)
  • Classification of experimental methods (powder diagram)


Prerequisites

Tests

Written exam of 2h
No document allowed



N1 = contrôle continu 10% + écrit 90%
N2 = contrôle continu 10% + écrit 90%

Additional Information

Curriculum->F1A-PMP->Semester 1

Bibliography

J.J. Rousseau : Cristallographie géométrique et radiocristallographie (Masson)

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Université Grenoble Alpes