Subject Code: ML6L035 Name: Functional Oxides: Structure and Properties L-T-P: 3-0-0 Credit:3
Pre-Requisite(s): None
Introduction: Importance of oxides in functional applications, Revision of basic crystallography: point group and space group.
Structure: Concepts of ionic bonding, Grouping of ions and structure rules, Radius ratio concept, Structure of crystalline oxides, Case studies, Demonstration of open-source software package(s) for geometric construction of oxide structures and determination of structural parameters.
Defect Reactions and Defect Equilibria: Different types of defects in oxides, Rules for defect reaction, Kröger-Vink notations, Conditions of equilibrium, Thermodynamics, Conditions of stoichiometry.
Electrical conductivity and Conducting oxides: Laws of diffusion,Lattice, grain boundary and surface diffusion, Theory of ionic conductivity, Solid electrolytes and fast ion conductors, Concepts of Thermoelectric effect.
Linear and non-linear dielectric oxides: Theory of linear dielectrics, circuit description, Dielectric constant and polarization, Dipolar polarization theory, Crystallographic consideration towards non-linear dielectric behavior. Concepts of piezo and ferroelectricity, Case studies.
Magnetic Oxides: Basic Theory, Types of magnetism, Exchange interactions, Case studies, Coupling of electrical and magnetic orders in oxides.
Texts and References:
  1. L.L. Hench and J. K. West, Principles of Electronic Ceramics, John Wiley and Sons Ltd, New York, 1990.
  2. W. D. Kingery, H. K. Bowen (Author), Donald R. Uhlmann, Introduction to Ceramics,  Wiley-Interscience; 2nd edition, 1976
  3. M. W. Barsoum, Fundamentals of Ceramics, CRC Press, 2002
  4. Per Kofstad, Non-stoichiometry, Diffusion and Electrical Conductivity in Binary Metal Oxides, Wiley-Interscience, 1972