Electroceramics
  Table of Contents
 

 

Table of Contents

  1. Structure of Ceramic Materials

    1.1 Brief Review of Structure of Materials
    1.2 A Brief Review of Bonding in Materials
    1.3 Packing of atoms in metals
    1.4 Interstices in Structures
    1.5 Structure of Covalent Ceramics
    1.6 Ionically Bonded Ceramic Structures
    1.7 Compounds based on FCC Packing of ions
    1.8 Other cubic structures
    1.9 Orthogonal Structures
    1.10 Structures based on HCP packing of ions
    1.11 Summary

  2. Defect Chemistry and Defect Equilibria

    2.1 Point Defects
    2.2 Kröger–Vink notation in a metal oxide, MO
    2.3 Defect Reactions
    2.4 Defect Structures in Stoichiometric Oxides
    2.5 Defect Structures in Non-stoichiometric Oxides:
    2.6 Dissolution of foreign cations in an oxide
    2.7 Concentration of Intrinsic Defects
    2.8 Intrinsic and Extrinsic Defects
    2.9 Units for defect Concentration
    2.10 Defect Equilibria
    2.11 Defect Equilibria in Stoichiometric Oxides
    2.12 Defect Equilibria in Non-Stoichiometric Oxides
    2.13 Defect Structures involving Oxygen vacancies and interstitials:
    2.14 Defect Equilibrium Diagram
    2.15 A Simple General Procedure for constructing at Brouwer’s Diagram
    2.16 Extent of non-stoichiometry
    2.17 Example: Comparative behaviour of TiO2 and MgO vis-à-vis oxygen pressure
    2.18 Electronic Disorder
    2.19 Examples
    2.20 Summary            
                                                                                                        

  3. Defects, Diffusion and Conduction in Ceramics
  4. 3.1 Diffusion
    3.2 Diffusion Kinetics
    3.3 Examples of Diffusion in Ceramics
    3.4 Mobility and Diffusivity
    3.5 Analogue to the electrical properties
    3.6 Conduction in Ceramics vis-à-vis metallic conductors: General Information
    3.7 Ionic Conduction: Basic Facts
    3.8 Ionic and Electronic Conductivity
    3.9 Characteristics of Ionic Conduction
    3.10 Theory of Ionic Conduction Conduction in Glasses
    3.11 Conduction in Glasses
    3.12 Fast Ion Conductors
    3.13 Examples of Ionic Conduction
    3.14 Electrochemical Potential
    3.15 Nernst Equation and Application of Ionic Conductors
    3.16 Examples of Ionic Conductors in Engineering Applications
    3.17 Summary

  5. Dielectric Ceramics: Basic Principles

  6. 4.1 Basic Properties: Dielectrics in DC electric field
    4.2 Mechanisms of Polarization
    4.3 Microscopic Approach
    4.4 Determination of Local Field
    4.5 Analytical treatment of Polarizability
    4.6 Effect of alternating field on the behavior of a dielectric material
    4.7 Frequency dependence of dielectric properties: Resonance
    4.8 Dipolar Relaxation i.e. Debye Relaxation is Polar Solids
    4.9 Circuit Representation of a Dielectric and Impedance Analysis
    4.10 Impedance Spectroscopy
    4.11Dielectric Breakdown
    4.12 Summary


  7. Nonlinear Dielectrics

  8. 5.1 Introduction
    5.2 Classification based on Crystal Classes
    5.3 Ferroelectric Ceramics
        5.3.1 Permanent Dipole Moment and Polarization
        5.3.2 Principle of Ferroelectricity:  Energetics
        5.3.3 Proof of Curie-Weiss Law
        5.3.4 Thermodynamic Basis of Ferroelectric Phase Transitions
        5.3.5 Case I: Second order Transition
        5.3.6 Case – II: First Order Transition
        5.3.7 Ferroelectric Domains
        5.3.8 Analytical treatment of domain wall energy
        5.3.9 Ferroelectric Switching and Domains
        5.3.10 Measurement of Hysteresis Loop
        5.3.11 Structural change and ferroelectricity in Barium Titanate (BaTiO3)
        5.3.12 Applications of Ferroelectrics

    5.4 Piezoelectric Ceramics
        5.4.1 Direct Piezoelectric Effect
        5.4.2 Reverse or Converse Piezoelectric Effect
        5.4.3 Poling of Piezoelectric Materials
        5.4.4 Depolarization of Piezoelectrics
        5.4.5 Common Piezoelectric Materials
        5.4.6 Measurement of Piezoelectric Properties
        5.4.7 Applications of Piezoelectric Ceramics

    5.5 Pyroelectric Ceramics
        5.5.1 Difference between and pyroelectric and ferroelectric material
        5.5.2 Theory of Pyroelectric Materials
        5.5.3 Measurement of Pyroelectric coefficient
        5.5.4 Direct and Indirect effect
        5.5.5 Common Pyroelectric Materials
        5.5.6 Common Applications

    5.6 Summary                                                                     

  9. Magnetic Ceramics

  10. 6.1 Magnetic Moments
    6.2 Macroscopic view of Magnetization
    6.3 Classification of Magnetism
    6.4 Diamagnetism
    6.5 Paramagnetism
    6.6 Ferromagnetism
    6.7 Antiferromagnetism
    6.8 Ferrimagnetism
    6.9 A Comparison
    6.10 Magnetic Losses and Frequency Dependence
    6.11 Magnetic Ferrites
    6.12 Summary   
            
  1. High temperature Superconductors

    7.1 Background
    7.2 Meissner Effect
    7.3 The critical field, Hc
    7.4 Theory of Superconductivity
    7.5 Discovery of high temperature superconductivity
    7.6 Mechanism of high temperature superconductivity
    7.7 Applications
    7.8 Summary

  2. Multiferroic and Magnetoelectric Ceramics

    8.1 Introduction
    8.2 Historical Perspective
    8.3 Requirements of a magnetoelectric and multiferroic material
    8.4 Magnetoelectric Coupling
    8.5 Type I Multiferroics
    8.6 Type II Multiferroics
    8.7 Two Phase Materials
    8.8 Summary


  3. Synthesis Methods

    9.1 Bulk Preparation Methods
    9.2 Thin Film Preparation Methods
    9.3 Thin film deposition: Issues
    9.4 Summary