Thermodynamics and defects of solids, Ceramics & Glass

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Thermodynamics and defects of solids, Ceramics & GlassCode de l'UE : HMCH157

Présentation

1 - The lecture introduces and discusses the nature of point defects which intrude upon the perfect geometry of ideal crystal structures. Point defects (missing or misplaced atoms, ions or electrons) are introduced.
2 - By using the thermodynamic concept, order-disorder phenomena in solid solutions is discussed.
3 -The Brouwer diagrams for oxides are studied in order to emphasize the role of surrounding atmosphere onto the defect equilibrium at high temperature.
4 -The diffusion of ions and electrons, as a major consequence of point defects, giving rise to electrical transport is investigated for ionic conductors.
5 - Experimental investigations of measuring the ionic conductivity versus the temperature are described. The method of Impedance Spectroscopy Measurements is discussed.
6. Kröger Vink Notation of Defects
7. Mott-Hubbard insolaters

Objectifs

The understanding of the role of point defects in solid on the transport properties and the structural stability.
To apply the concept of Brouwer diagram to control the conductivity in oxides.
Electronic and ionic conductivity in metallic oxides
Understand concepts of ceramic semiconductors

Pré-requis recommandés

A general background in solid state chemistry. Some knowledge in solid state physic (band theory)

Volume horaire

  • CM : 24
  • TD : 12
  • TP : 0

Syllabus

Physical Ceramics Y.M. Chiang, D. Birnie, W.D. Kingery,MIT Series in Materials science, Wiley
Impedance Spectroscopy, Theory, Experiment and Applications, E. Barsoukov and J.R. MacDonald, Wiley Interscience

Diplômes intégrant cette UE

En bref

Crédits ECTS 5

Période de l'année
premierSemestre

Langue d'enseignement
fr

Contact(s)

Contact(s) administratif(s)

Werner PAULUS (werner.paulus @ umontpellier.fr)